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Paediatric Dentistry PMU-Part 2 (units 5-9)

Descripción

Unit 5. Histogenesis, Morphology and Physiology of Dental Pulp Unit 6: Histogenesis, Morphology and Physiology of Tooth Cementum Unit 7: Histogenesis, Morphology and Physiology of Periodontal Ligament Unit 8: Histogenesis, Morphology and Physiology of Oral Mucosa and Periodontium Unit 9: Dynamics of Primary and Permanent Dentition Development-Stages and Terms Unit 10: Dental Anatomy and Physiology - Characteristics of Primary and Permanent Dentition
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Resumen del Recurso

Pregunta 1

Pregunta
Dental Pulp is a loose connective tissue that occupies a space called cavum pulp.
Respuesta
  • YES
  • NO

Pregunta 2

Pregunta
The walls of canalis radicis dentis becomes thinner due to a dentin deposition
Respuesta
  • YES
  • NO

Pregunta 3

Pregunta
The dental pulp of the primary teeth begins to develop during the second month of embryonic life from papilla dentis
Respuesta
  • YES
  • NO

Pregunta 4

Pregunta
Pulp is a specialized epithelial tissue
Respuesta
  • YES
  • NO

Pregunta 5

Pregunta
Zone of Weil contains Odontoblasts
Respuesta
  • YES
  • NO

Pregunta 6

Pregunta
Dental Pulp is composed of Procollagen and Collagen fibres
Respuesta
  • YES
  • NO

Pregunta 7

Pregunta
The fibroblasts of Dental Papilla are responsible for the secretion of Procollagen, Collagen and Glucosaminoglycans
Respuesta
  • YES
  • NO

Pregunta 8

Pregunta
Dental Pulp is divided into 2 parts: a/ [blank_start]Coronal Pulp[blank_end] b/ [blank_start]Radicular Pulp[blank_end]
Respuesta
  • Coronal Pulp
  • Radicular Pulp

Pregunta 9

Pregunta
The cellular elements of Pulp are a/ [blank_start]Resident cell population[blank_end] b/ [blank_start]Migratory cell Population[blank_end]
Respuesta
  • Resident cell population
  • Migratory cell Population

Pregunta 10

Pregunta
The four distinct zones of pulp are: 1/ [blank_start]Odontoblstic Zone in the periphery[blank_end] 2/ [blank_start]Subodontoblastic layer[blank_end] a/[blank_start]Cell free zone of Weil[blank_end] b/ [blank_start]Cell - Rich Zone[blank_end] 3/ [blank_start]Pulp Core[blank_end]
Respuesta
  • Odontoblstic Zone in the periphery
  • Subodontoblastic layer
  • Cell free zone of Weil
  • Cell - Rich Zone
  • Pulp Core

Pregunta 11

Pregunta
The four functions of Dental Pulp are: a/ [blank_start]Formative[blank_end] b/ [blank_start]Nutritive[blank_end] c/ [blank_start]Sensory[blank_end] d/ [blank_start]Protective[blank_end]
Respuesta
  • Formative
  • Nutritive
  • Sensory
  • Protective

Pregunta 12

Pregunta
The three periods in the life of pulp are: a/ [blank_start]Embryonic[blank_end] b/ [blank_start]Functional[blank_end] c/ [blank_start]Senile[blank_end]
Respuesta
  • Embryonic
  • Functional
  • Senile

Pregunta 13

Pregunta
Pulp is surrounded by:
Respuesta
  • Enamel
  • Cementum
  • Dentin

Pregunta 14

Pregunta
Pulp is formed from the:
Respuesta
  • Dental Follicle
  • Dental Papilla
  • Enamel Organ

Pregunta 15

Pregunta
The statements about odontoblasts that are correct are:
Respuesta
  • They are composed of Cross striated fibres
  • They are first observed as elongated cells, then the cells become pear shaped
  • Their long protoplasmic processes extend into the dentin
  • They are undifferentiated cells
  • The nucleus is located in the basal portion of the cell

Pregunta 16

Pregunta
The statements about fibroblasts in Dental Pulp that are correct are:
Respuesta
  • a. They are star shaped cells
  • b. They are elongated spindle cells with a large oval nucleus
  • c. There is a large number of vacuoles in the cytoplasm
  • d. They have numerous cytoplasmic processes

Pregunta 17

Pregunta
Read the Text. Which are the described cells? The large number of these cells is an indicator of cellular disintegration. They directly participate in the protective function of pulp. They have the ability to produce biologically active substances/serotinin,heparin/
Respuesta
  • a. Odontoblasts
  • b. Fibroblasts
  • c. Histiocytes
  • d. Mastocytes
  • e. Blood cells

Pregunta 18

Pregunta
The theories of dental pain transmission through dentin are: a/ [blank_start]Direct innervation theory[blank_end] b/ [blank_start]Transduction Theory[blank_end] c/ [blank_start]Hydrodynamic Theory[blank_end]
Respuesta
  • Direct innervation theory
  • Transduction Theory
  • Hydrodynamic Theory

Pregunta 19

Pregunta
The right combination of statements about collagen fibres is 1. They are cross striated fibres 2. The collagen fibrils are made of many individual collagen molecules/Proline, hydroxypoline,Glycine/ 3. They form the peripheral boundary of Dental pulp 4. They are gathered in clusters around the blood vessels
Respuesta
  • A/ 1,2,3
  • B/ 2,3,4
  • C/ 1,2,4
  • D/ 1,3,4

Pregunta 20

Pregunta
The Subodontoblastic pulp layer includes: 1. Odontoblasts 2. Cell-Free Zone 3. Fibroblasts and undifferentiated mesenchymal cells 4. They are gathered in clusters around the blood vessels
Respuesta
  • A/ 1,2
  • B/ 1,3
  • C/ 2,3
  • D/ 2,4

Pregunta 21

Pregunta
The pulp core contains: 1. Odontoblasts 2. Zone of Weil 3. Intercellular substance 4. Fibroblasts, defence cells, blood vessels and Nerves
Respuesta
  • A/ 1,2
  • B/ 3,4
  • C/ 2,4
  • D/ 1,3

Pregunta 22

Pregunta
The right combination of statements about odontoblasts is: 1. These cells are found through the pulp core 2. They are specialised and differentiated cells 3. They form the peripheral boundary of dental pulp 4. They are star-shaped cells 5. They are first observed as elongated cells, then the cells become pear shaped
Respuesta
  • A/ 1,2,3
  • B/ 2,3,5
  • C/ 2,3,4
  • D/ 1,2,5

Pregunta 23

Pregunta
Which of the following statements are correct? Write down the answer with 'YES' or 'NO' (Just identify the Correct 'YES' Statements)
Respuesta
  • a. The ground substance of pulp is composed of glycosaminoglycans, mucopolysaccharides, electrolytes and water
  • b. Enamel and Dentin act as a permeable membrane in the ion exchange of the tooth, providing a permanent fluid between the oral liquid and dental pulp
  • c. There are no changes in the chemical composition of the pulp ground substance during the different stages in its life
  • d. Myelinated nerve fibres form the subodontoblastic plexus of Raschkow
  • e. The pores of the fenestrated capillaries permit a rapid exchange of water and solutes
  • f. The pulp chambers in adults teeth are much larger than in children
  • g. During the process of root resorption the pulp of the primary teeth is in functional stage
  • h. There are no elastic fibers in pulp except those present in the walls of the larger blood vessels

Pregunta 24

Pregunta
Match the items from the first column that best relate to the items listed in the second column: A. Odontoblasts - [blank_start]2,5,7,10[blank_end] B. Fibroblasts - [blank_start]4,5,8,9[blank_end] C. Histiocytes - [blank_start]1,3,6,8[blank_end] 1- Poorly differentiated cells with irregular shape 2. Well differentiated and specialised cells 3- Defense cells 4. Elongated, fusiform cells with a large nucleus 5. Formative cells of Dental Pulp 6. There is a large number of vacuoles in the cytoplasm 7. Their long protoplasmic processes extend into the dentin 8. They are embedded in the intercellular substance 9. They have many cytoplasmic processes 10. They are located in the periphery of pulp
Respuesta
  • 2,5,7,10
  • 4,5,8,9
  • 1,3,6,8

Pregunta 25

Pregunta
Match the items from the first column that best relate to the items listed in the second column: A. Reticulin fibrers - [blank_start]1,4[blank_end] B. Collagen Fibers - [blank_start]2,3[blank_end] 1. Immature collagenous fibers 2. Mature fibers in connective tissue 3. Cross striated fibres 4. Argyrophilic Fibers
Respuesta
  • 1,4
  • 2,3

Pregunta 26

Pregunta
The features of dental pulp of newly erupted teeth: 1. Large pulp chamber 2. A small number of cells and a small amount of liquids 3. Low pulp potential to provide nutritive and protective function 4. High pulp potential to provide nutritive and protective function 5. High pulp potential to provide formative, sensory and reparative function 6. Large amounts of collagen fibres 7. Small amounts of collagen fibres 8. Large numbers of undifferentiated cells
Respuesta
  • A/ 1,2,3,5,6,7
  • B/ 1,4,5,7,8
  • C/ 1,2,4,5,8
  • D/ 1,2,5,6,8

Pregunta 27

Pregunta
Cementum is mesodermal in origin
Respuesta
  • YES
  • NO

Pregunta 28

Pregunta
Cementum is developed from the inner layer of the fully formed saculus dentis
Respuesta
  • YES
  • NO

Pregunta 29

Pregunta
Cementum is a Vascular tissue.
Respuesta
  • YES
  • NO

Pregunta 30

Pregunta
The structural units of cementum are cells, fibers and intercellular substance
Respuesta
  • YES
  • NO

Pregunta 31

Pregunta
Cementum is continuously formed throughout a persons entire life
Respuesta
  • YES
  • NO

Pregunta 32

Pregunta
Cementum is the least mineralised of the calcified dental tissues
Respuesta
  • YES
  • NO

Pregunta 33

Pregunta
The cellular cementum covers the dentin of the whole root surface
Respuesta
  • YES
  • NO

Pregunta 34

Pregunta
Precementum is an unmineralised matrix of cementum
Respuesta
  • YES
  • NO

Pregunta 35

Pregunta
Two types of cells are functionally concerned with cementum a/ [blank_start]Cementoblasts[blank_end] b/ [blank_start]Cementocytes[blank_end]
Respuesta
  • Cementoblasts
  • Cementocytes

Pregunta 36

Pregunta
The two types of cementum forms are a/ [blank_start]acellular cementum[blank_end] b/ [blank_start]cellular cementum[blank_end]
Respuesta
  • acellular cementum
  • cellular cementum

Pregunta 37

Pregunta
Cementum is composed of two types of matrix fibers: a/ [blank_start]Primarily intrinsic fibers[blank_end] b/ [blank_start]Primarily extrinsic fibers[blank_end]
Respuesta
  • Primarily intrinsic fibers
  • Primarily extrinsic fibers

Pregunta 38

Pregunta
The cells responsible for cementogenesis are:
Respuesta
  • Odontoblasts
  • Cementoblasts
  • ameoblasts
  • osteoblasts

Pregunta 39

Pregunta
The most accurate and detailed description of cementum is:
Respuesta
  • Cementum is a hard dental tissue
  • Cementum is formed during the development of tooth root
  • It is a specialized calcified substance covering the root of a tooth
  • It is a hard dental tissue that covers the root of a tooth and is formed together with its development

Pregunta 40

Pregunta
Read the text. Which are the described cells? Cells, with reduced secretory activity, are incorporated into cementum and lie in spaces known as lacunae, where as their protoplasmic processes extend in small canaliculi
Respuesta
  • Cementoblasts
  • Mesenchymal cells
  • Cementocytes
  • Histiocytes

Pregunta 41

Pregunta
The corkscrew fibers that pass between odontoblasts and reach predentin are called:
Respuesta
  • Sharpey's fibers
  • Periodontal ligament
  • Matrix fibers
  • Korffs Fibers

Pregunta 42

Pregunta
Cementum is formed:
Respuesta
  • during the ontogenetic development of the tooth germ
  • after the tooth eruption
  • continuously throughout a person's entire life
  • a+b+b

Pregunta 43

Pregunta
Cementocytes are:
Respuesta
  • Cells rich in acid mucopolysaccharides
  • Cells that lie in spaces known as lacunae
  • Cells that show a gradual decrease in the size of the cell, nucleus and cytoplasm with ageing
  • Cells with reduced secretory activity
  • a+b+c+d

Pregunta 44

Pregunta
The statements about the acellular cementum that are correct are:
Respuesta
  • It is called primary cementum and is mainly found on cervical and middle root portions
  • It is an outermost layer
  • Regeneration of cementum is possible
  • Regeneration of cementum is not posssible

Pregunta 45

Pregunta
The features of cementum associated with childhood are:
Respuesta
  • increase of cementum thickness
  • reduction in cementum thickness
  • lowly mineralised cementum
  • a large amount of cellular cementum is found on the tooth root

Pregunta 46

Pregunta
The right combination of statements about cementum is : 1. Cementum is a hard dental tissue 2. It covers the crown of the tooth 3. It covers the root of the tooth 4. It is a lose connective tissue 5. The compositions of cementum and mature bone are similar but cementum is an avascular mineralised tissue
Respuesta
  • A/ 1,2,3
  • B/ 2,4,5
  • C/ 1,3,5
  • D/ 3,4,5

Pregunta 47

Pregunta
The right combination of statements about cementoblasts is: 1. They are star-shaped cells with long protoplasmic processes 2. They are tall and cylindrical cells 3. They are cells with a minimal amount of cytoplasm 4. There is a large amount of RNA-granules and mitochondria, well-developed endoplasmic reticulum and Golgi apparatus 5. They are responsible for the synthesis of collagen and polysaccharide complexes
Respuesta
  • A/ 1,2,3
  • B/ 1,4,5
  • C/ 1,3,4
  • D/ 3,4,5

Pregunta 48

Pregunta
The right combination of statements about the cellular cementum is: 1. It is an outermost layer that contains a large number of cells 2. It is an innermost layer that covers dentin 3. It is contiguous with periodontal ligament on its outer surface 4. The cells undergo degeneration and ossification 5. Regeneration of cementum is possible 6. Regeneration of cementum is not possible
Respuesta
  • A/ 1,3,6
  • B/ 1,3,5
  • C/ 2,4,6
  • D/ 3,4,5

Pregunta 49

Pregunta
Match the items form the first column that best relate to the items listed in the second column Match the cells with their characteristics A. Cementoblasts - [blank_start]1,3,5[blank_end] B. Cementocytes - [blank_start]2,4,6,7[blank_end] 1. They are found on the surface of cementum 2. They are incorporated into cementum 3. They produce fibers and ground substance 4. Cells with reduced secretory activity 5. Cells with high secretory activity 6. Cells with a small amount of cytoplasm 7. Well differentiated cells and reduced secretory activity
Respuesta
  • 1,3,5
  • 2,4,6,7

Pregunta 50

Pregunta
Match the fibers with their characteristics A. Primarily extrinsic fibers/Sharpey's fibers/ - [blank_start]2,4[blank_end] B. Primarily intrinsic fibers - [blank_start]1,3[blank_end] 1. They are arranged parallel to the root surface 2. They are arranged radially, crossing the cementum layer 3. They are fine-fibered 4. They are produced by periodontal ligament fibroblasts
Respuesta
  • 2,4
  • 1,3

Pregunta 51

Pregunta
Which of the following statements are correct? Write down the answer with YES or NO a. The permeability of cementum varies with the age and type of cementum -- [blank_start]YES[blank_end] b. The mineral content of cementum is 65% -- [blank_start]YES[blank_end] c. The acellular cementum occurs more frequently on the apical half of the root -- [blank_start]NO[blank_end] d. Fibroblasts are the formative cells of the acellular cementum -- [blank_start]NO[blank_end]
Respuesta
  • YES
  • YES
  • NO
  • NO

Pregunta 52

Pregunta
The functions of Sharpey's and Korff fibers are: [blank_start]ANSWER IS BELOW[blank_end] a/ Sharpey's fibers -- are the terminal end of principle fibers/of periodontal ligament/that insert into cementum and into the periosteum of the alveolar bone b/ Korff's Fibers -- Pass between odontoblasts, reach Predentin and form the Dental matrix
Respuesta
  • ANSWER IS BELOW

Pregunta 53

Pregunta
Periodontal ligament is a connective tissue structure, an integral part of Periodontium
Respuesta
  • YES
  • NO

Pregunta 54

Pregunta
Periodontal ligament attaches the tooth to the surrounding alveolar bone within which it sits and allows functional movement of the tooth.
Respuesta
  • YES
  • NO

Pregunta 55

Pregunta
Periodontal ligament is a connective tissue, located between dentin and dental pulp
Respuesta
  • YES
  • NO

Pregunta 56

Pregunta
Periodontal ligament consists of fibres, cells, ground substance, blood and lymphatic vessels, nerve fibres
Respuesta
  • YES
  • NO

Pregunta 57

Pregunta
The most important elements of periodontal ligament are the cells
Respuesta
  • YES
  • NO

Pregunta 58

Pregunta
Periodontal ligament receives its blood supply through branches of interalveolar vessels, branches of apical artery supplying the pulp and branches of gingival vessels entering a coronal direction.
Respuesta
  • YES
  • NO

Pregunta 59

Pregunta
Periodontal ligament is made up of fibres that course between [blank_start]alveolar bone[blank_end] and [blank_start]cementum[blank_end] of the tooth
Respuesta
  • alveolar bone
  • cementum

Pregunta 60

Pregunta
The cells of periodontal ligament are a/ [blank_start]Fibroblasts[blank_end] b/ [blank_start]Cementoblasts[blank_end] c/ [blank_start]Osteoblasts[blank_end] d/ [blank_start]Histiocytes[blank_end] e/ [blank_start]Mastocytes[blank_end] f/ [blank_start]Lymphocytes[blank_end] g/ [blank_start]Undifferentiated cells[blank_end] h/ [blank_start]Epithelial cell rests of Malassez[blank_end]
Respuesta
  • Fibroblasts
  • Cementoblasts
  • Osteoblasts
  • Histiocytes
  • Mastocytes
  • Lymphocytes
  • Undifferentiated cells
  • Epithelial cell rests of Malassez

Pregunta 61

Pregunta
The sensory innervation of periodontal ligament is derived from branches of [blank_start]n.Trigeminus[blank_end]
Respuesta
  • n.Trigeminus

Pregunta 62

Pregunta
The sensory nerve branches of n.trigeminus entering periodontal ligament are derived from two sources THE ANSWER IS BELOW [blank_start]BECAUSE TOO LONG TO ADD BLANK[blank_end] 1. Some nerve bundles enter near the root apex and pass up through periodontal ligament 2. Others enter the middle and cervical portions of the ligament as finer branches through opening in the alveolar walls
Respuesta
  • BECAUSE TOO LONG TO ADD BLANK

Pregunta 63

Pregunta
The major collagen type found in periodontal ligament is [blank_start]TYPE 1[blank_end]
Respuesta
  • TYPE 1

Pregunta 64

Pregunta
The narrowest portion of periodontal ligament is around [blank_start]the middle third of the root[blank_end] while the ligament is widest in the [blank_start]cervical and apical third of the root.[blank_end]
Respuesta
  • the middle third of the root
  • cervical and apical third of the root.

Pregunta 65

Pregunta
Periodontal ligament consists of
Respuesta
  • Fibers
  • Cells
  • Amorphous inorganic substance
  • Ground substance

Pregunta 66

Pregunta
Periodontal ligament fibroblasts are
Respuesta
  • Cylindrical cells
  • Spindle-shaped cells
  • Found in large numbers
  • Responsible for the synthesis of collagen
  • Sensory cells

Pregunta 67

Pregunta
The statements about the osteoblasts in periodontal ligament that are correct are:
Respuesta
  • They are the most numerous cell type in periodontal ligament
  • They are located on the alveolar bone surface
  • They are responsible for the bone formation
  • At certain times they produce secondary cementum
  • At certain times they are converted into osteoclasts
  • They are errant cells

Pregunta 68

Pregunta
It is suggested that cyst formation requires a proliferation of:
Respuesta
  • Fibroblasts in periodontal ligament
  • Cementoblasts in periodontal ligament
  • Histiocytes in periodontal ligament
  • Epithelial cell rests of Malassez in periodontal ligament
  • Osteoblasts in periodontal ligament

Pregunta 69

Pregunta
The statements about the ground substance of periodontal ligament that are correct are:
Respuesta
  • It is the environment that surrounds fibres, blood vessels, nerve fibres and cells
  • All components of periodontal ligament ground substance are presumed to be secreted by osteoblasts
  • It acts as a cushion for the displaced tooth
  • It is located on the cementum surface
  • It is responsible for the ion and water delivery and exchange

Pregunta 70

Pregunta
The features of periodontal ligament associated with childhood are:
Respuesta
  • Wide periodontal ligament space
  • Narrow periodontal ligament space
  • Large amounts of mature collagen fibers
  • Large amounts of fluid ground substance
  • Large number of cells, blood vessels and nerve fibers

Pregunta 71

Pregunta
The width of the periodontal space depends on the 1. degree of mineralization of dental hard tissues 2. Dentition 3. Child's age 4. Functional Stress
Respuesta
  • 1,2,3
  • 2,3,4
  • 1,4
  • 1,3

Pregunta 72

Pregunta
The right combination of statements about the dentoalveolar fiber group is: 1. The alveolar crest fibers pass over the crest of interdental septum and are embedded in the cervical part of the cementum 2. The horizontal fibers run from cementum to the bone with a perpendicular angle to the long axis of the tooth 3. The oblique fibers are the most numerous fibers in periodontal ligament, running from cementum in an oblique direction to insert into the bone coronally 4. The apical fibers radiate in a rather irregular manner from cementum to the bone at the apical region of the socket
Respuesta
  • 1,4
  • 2,3,4
  • 3,4
  • 1,2,3,4

Pregunta 73

Pregunta
Ligamentum circulate consists of: 1. Gingival ligament 2. Circumferential gingival fibers 3. Alveolar crest fibers 4. Sharpey's fibers
Respuesta
  • 1,2,3
  • 2,3,4
  • 3,4
  • 1,2,3,4

Pregunta 74

Pregunta
The right combination of statements about the blood supply of periodontal ligament is: 1. Periodontal ligament is poorly vascularised 2. Periodontal ligament is well vascularised 3. The pressure in the circulatory system is opposed by the hydrostatic pressure of the surrounding tissues 4. It contains numerous capillaries 5. The capillaries are few in number
Respuesta
  • 1,2,3,4
  • 2,3,4
  • 2,3,4,5
  • 3,4,5

Pregunta 75

Pregunta
The supportive function of periodontal ligament is achieved by the: 1. Horizontal fibers 2. Blood vessels 3. Apical fibers 4. Oblique fibers 5. Histiocytes
Respuesta
  • 1,2,3
  • 1,3,4
  • 3,4,5
  • 1,4,5

Pregunta 76

Pregunta
Periodontal ligament mechanoreceptors are 1. Ruffini's corpuscles 2. Meissner's corpuscles 3. Free nerve endings 4. Spindle type nerve ending
Respuesta
  • 1,2
  • 1,2,3
  • 1,2,4
  • 3,4

Pregunta 77

Pregunta
Match the items from the first column that best relate to the items listed on the second column A. Anatomic location of periodontal ligament - [blank_start]2[blank_end] B. Width of the Periodontal Space - [blank_start]1,4,5,6,7[blank_end] C. Functions of periodontal ligament - [blank_start]3[blank_end] 1. It depends on the functional stress 2. It is located between alveolar bone and cementum covering the root 3. It consists of fibers that essentially attach the tooth to alveolar bone within which it sits 4. Periodontal ligament is widest in the cervical third of the root 5. It depends on the different groups of teeth 6. The narrowest portion of periodontal ligament is around the middle third of the root 7. It depends on the different parts of the tooth root
Respuesta
  • 2
  • 1,4,5,6,7
  • 3

Pregunta 78

Pregunta
YES OR NO a. The ground substance of periodontal ligament is responsible for the ion and water delivery and exchange --- [blank_start]YES[blank_end] b. Cementoblasts and osteoblasts are responsible for the synthesis of collagen in periodontal ligament --- [blank_start]NO[blank_end] c. The width of the periodontal ligament space shows a progressive increase with age --- [blank_start]NO[blank_end] d. Fibroblasts the most numerous cell type in periodontal ligament and are responsible not only for the synthesis of collagen, but also for the removal of the collagen fibers during the continuous remodelling that takes place in the ligament --- [blank_start]YES[blank_end] e. The thinnest portion of periodontal ligament is around the middle third of the root --- [blank_start]YES[blank_end]
Respuesta
  • YES
  • NO
  • NO
  • YES
  • YES

Pregunta 79

Pregunta
The right combination of statements about periodontal ligament is 1. Periodontal ligament is very poorly innervated 2. The supportive function of periodontal ligament is achieved by the epithelial cell rests of Malassez 3. All nerve fibers, present in periodontal ligament, are myelinated 4. Nerve fibers follow the path of the blood vessels 5. The peripheral nerve fibers are unmyelinated 6. Ruffini's corpuscles are mechanoreceptors in periodontal ligament 7. The periodontal collagen is mostly type IV collagen 8. The pressure in the circulatory system is opposed by the hydrostatic pressure of the surrounding tissues 9. Periodontal ligament is richly supplied with nerve endings that are primarily receptors for pain and pressure
Respuesta
  • 4,5,6,8,9
  • 1,2,4,8,9
  • 1,3,4,5,7,8
  • 2,4,5,6,8

Pregunta 80

Pregunta
Oral Mucosa consists of epithelium/lamina epithelial/, mucosa/lamina propria mucosae/ submucosa/lamina submucosa.
Respuesta
  • YES
  • NO

Pregunta 81

Pregunta
The epithelium of the oral mucosa is mesodermal in origin
Respuesta
  • YES
  • NO

Pregunta 82

Pregunta
The lining mucosa covers the lips, the inside of the cheeks, floor of the mouth, inferior surface of the tongue and soft palate.
Respuesta
  • YES
  • NO

Pregunta 83

Pregunta
Stratum basale of oral mucosa consists of several layers of compactly arranged cells, firmly attached to the basement membrane
Respuesta
  • YES
  • NO

Pregunta 84

Pregunta
Lamina Propria mucosae is found above the basement membrane
Respuesta
  • YES
  • NO

Pregunta 85

Pregunta
No submucosa is found in gingiva, hard palate and dorm of tongue
Respuesta
  • YES
  • NO

Pregunta 86

Pregunta
Stratum granulosum of the masticatory mucosa consists of two to five layers of rhomboid cells containing keratohyalin granules
Respuesta
  • YES
  • NO

Pregunta 87

Pregunta
Oral Mucosa can be divided into three main categories based on the function and histology into lining, masticatory and specialised mucosa
Respuesta
  • YES
  • NO

Pregunta 88

Pregunta
Lamina Epithelialis is of
Respuesta
  • endodermal origin
  • mesenchymal origin
  • ectodermal origin
  • mixed origin

Pregunta 89

Pregunta
Lamina propria mucosae and lamina submucosa are of
Respuesta
  • ectodermal origin
  • endodermal origin
  • mixed origin
  • mesenchymal origin

Pregunta 90

Pregunta
Stratum basale and stratum spinosum are the two layers of the:
Respuesta
  • epithelium of the lining mucosa
  • masticatory mucosa
  • specialized mucosa
  • lamina propria mucosae

Pregunta 91

Pregunta
The characteristics of the masticatory mucosa are:
Respuesta
  • It covers hard palate and alveolar process
  • It covers dorm of the tongue and soft palate
  • It is subjected to great stress and strain distributions
  • It has greater reparative capacity than lining mucosa

Pregunta 92

Pregunta
The specialized mucosa covers:
Respuesta
  • Hard Palate and alveolar bone
  • dorsum of the tongue and soft palate
  • lips
  • inner surface of the cheeks

Pregunta 93

Pregunta
The functions of oral mucosa include all of the following except for
Respuesta
  • sensation
  • beginning of the digestion process
  • secretion
  • protection
  • thermoregulation
  • resorption

Pregunta 94

Pregunta
The characteristics of the lingual mucosa are:
Respuesta
  • No submucosa is found in the lingual mucosa
  • It is composed of loose connective tissue
  • There are four types of papillae found on the dorsal surface of the tongue
  • In cells Parakeratosis occurs which leads to exfoliation
  • Lamina Propria mucosae forms prominent papillary folds covered by epithelium

Pregunta 95

Pregunta
The taste sensation is experienced best on
Respuesta
  • Lips
  • Tongue
  • Pharynx
  • Soft Palate
  • Tonsils

Pregunta 96

Pregunta
The right combination of statements about lamina propria mucosae is: 1. It is located beneath the basement membrane 2. It consists of collagen, elastic fibers and reticulin 3. It is a layer of loose connective tissue which lies beneath lamina submucosa 4. It forms multiple prominent papillary folds covers by epithelium
Respuesta
  • 1,2,3
  • 1,2,4
  • 2,3,4
  • 1,2,3,4

Pregunta 97

Pregunta
The right combination of statements about lamina submucosa is: 1. It is located beneath lamina propria mucosae 2. It is a layer of loose connective tissue 3. It is of endodermal origin 4. It has capacity of glycogen synthesis and deposition
Respuesta
  • 1,2,3
  • 2,3,4
  • 1,2,4
  • 1,2,3,4

Pregunta 98

Pregunta
As in the skin the 'immigrant' cells present in the non-keratinised epithelium of the lining mucosa are: 1. Langerhans Cells 2. Melanocytes 3. Merkel's cells 4. migrating lymphocytes 5. epithelial cells 6. endodermal cells
Respuesta
  • 1,2,3
  • 1,2,3,4
  • 3,4,5,6
  • 1,4,5,6

Pregunta 99

Pregunta
The different types of Papillae on the tongue are: 1. Reticular 2. Filiform 3. Fungiform 4. Dendriform 5. Foilate 6. Circumvallate
Respuesta
  • 1,2,3,4
  • 4,5,6
  • 2,3,5,6
  • 2,3,4,5,6

Pregunta 100

Pregunta
There are 4 types of papillae present in the human tongue: a/ [blank_start]Filiform Papillae[blank_end] b/ [blank_start]Fungiform Papillae[blank_end] c/ [blank_start]Foliate Papillae[blank_end] d/ [blank_start]Circumvallate Papillae[blank_end]
Respuesta
  • Filiform Papillae
  • Fungiform Papillae
  • Foliate Papillae
  • Circumvallate Papillae

Pregunta 101

Pregunta
The masticatory mucosa has a keratinised stratified squamous epithelium which has 3 layers a/ [blank_start]Stratum basale[blank_end] b/ [blank_start]Stratum Spinosum[blank_end] c/ [blank_start]Stratum granulosum[blank_end]
Respuesta
  • Stratum basale
  • Stratum Spinosum
  • Stratum granulosum

Pregunta 102

Pregunta
The blood supply of oral mucosa originates from: [blank_start]aa.carotis externa[blank_end] and [blank_start]aa. maxillaris interna[blank_end]
Respuesta
  • aa.carotis externa
  • aa. maxillaris interna

Pregunta 103

Pregunta
The veins or oral mucosa follow the path of the corresponding arteries and drain into [blank_start]V. Jugularis Interna[blank_end]
Respuesta
  • V. Jugularis Interna

Pregunta 104

Pregunta
The innervation of oral mucosa is provided by the branches of: a/ [blank_start]N.Trigeminus[blank_end] b/ [blank_start]N. Glossopharingeus[blank_end] c/ [blank_start]N. Hypoglossus[blank_end] d/ [blank_start]N. Facialis[blank_end]
Respuesta
  • N.Trigeminus
  • N. Glossopharingeus
  • N. Hypoglossus
  • N. Facialis

Pregunta 105

Pregunta
A. The epithelium of the lining and specialised mucosa is thin. non-keratinized: lamina propria mucosae is a layer of loose connective tissue: nonspecific immunity -- [blank_start]2[blank_end] B. There is an increase of the epithelial and basement membrane thickness as well as in the amount of fibrous tissue of the mucosa: heparin deposition -- [blank_start]1[blank_end] C. The epithelium is thin with increased thickness of basement membrane, there are poorly differentiated cells of the connective tissue: weak local immunity -- [blank_start]3[blank_end] 1. age 4-12 years 2. age 0-1 years 3. age 1-3 years
Respuesta
  • 2
  • 1
  • 3

Pregunta 106

Pregunta
Match the epithelial layers with their characteristics: A. Stratum Basale -- [blank_start]2,3,5,9[blank_end] B. Stratum Spinosum -- [blank_start]1,4,6,7,8[blank_end] 1. It is located above the basal layer 2. It is called also a germinative layer 3. It consists of a single layer cells 4. It consists of 8-10 layers of many sided cells 5. The cells of this layer are poorly differentiated 6. Small amounts of glycogen are found in the cytoplasm 7. Melanocytes are not found in the layer 8. A process of desquamation of the later occurs 9. Molecules and ions move through the layer by a passive transport process
Respuesta
  • 2,3,5,9
  • 1,4,6,7,8

Pregunta 107

Pregunta
Match the lingual and labial mucosa with their characteristics A. Lingual Mucosa -- [blank_start]2,4,5,6[blank_end] B. Labial Mucosa -- [blank_start]1,3,7[blank_end] 1. It refers to the inside lining of the lips and is part of the lining mucosa 2. It is bound very tightly to the underlying tongue muscles 3. It has very thick and loose submucosa 4. No submucosa found 5. Mucosa forms prominent papillary folds covered by epithelium 6. Four types of papillae are found 7. In cells parakeratosis occurs
Respuesta
  • 2,4,5,6
  • 1,3,7

Pregunta 108

Pregunta
The functions of oral mucosa are: a/ [blank_start]Sensation[blank_end] b/ [blank_start]beginning of the digestion process[blank_end] c/ [blank_start]secretion[blank_end] d/ [blank_start]excretion[blank_end] e/ [blank_start]resorption[blank_end] f/ [blank_start]protection[blank_end]
Respuesta
  • Sensation
  • beginning of the digestion process
  • secretion
  • excretion
  • resorption
  • protection

Pregunta 109

Pregunta
Periodontium is a complex anatomical structure composed of both hard and soft tissues
Respuesta
  • YES
  • NO

Pregunta 110

Pregunta
Gingiva is part of the soft tissue lining of the mouth, tightly bound to the underlying periosteum of alveolar bone and surrounding the teeth in a collar
Respuesta
  • YES
  • NO

Pregunta 111

Pregunta
The facial attached gingiva is narrowest in the area of incisors
Respuesta
  • YES
  • NO

Pregunta 112

Pregunta
Healthy gingiva usually has a colour that has been described as dark red
Respuesta
  • YES
  • NO

Pregunta 113

Pregunta
Physiological changes associated with the tooth eruption occur in periodontium as the dentition changes from primary to permanent teeth
Respuesta
  • YES
  • NO

Pregunta 114

Pregunta
Periodontal ligament is ectodermal in origin
Respuesta
  • YES
  • NO

Pregunta 115

Pregunta
Ligamentum circulare dentis consists of gingival ligament, circumferential gingival fibers and alveolar crest fibers
Respuesta
  • YES
  • NO

Pregunta 116

Pregunta
The attached gingiva is continuous with the marginal gingiva
Respuesta
  • YES
  • NO

Pregunta 117

Pregunta
The width of the attached gingiva in the incisor region is the widest
Respuesta
  • YES
  • NO

Pregunta 118

Pregunta
The interdental papilla is also known as the interdental gingiva
Respuesta
  • YES
  • NO

Pregunta 119

Pregunta
The healthy interdental papilla fill in the area between the teeth apical to their contact areas
Respuesta
  • YES
  • NO

Pregunta 120

Pregunta
The wall of the gingival sulcus is lined by keratinised epithelium
Respuesta
  • YES
  • NO

Pregunta 121

Pregunta
Ligamentum circulare and connective tissue attachment serve as a physiologic barrier of periodontium
Respuesta
  • YES
  • NO

Pregunta 122

Pregunta
The circular gingival fibers attach gingiva to the root dentin
Respuesta
  • YES
  • NO

Pregunta 123

Pregunta
Sharper's fibers extend from periodontal ligament into cementum and act as a buffer medium against stress
Respuesta
  • YES
  • NO

Pregunta 124

Pregunta
The fibers of van Korff are corkscrew fibers that pass between odontoblasts and reach predentin
Respuesta
  • YES
  • NO

Pregunta 125

Pregunta
The formative function of periodontium is provided by the fibers and ground substance in the periodontal ligament
Respuesta
  • YES
  • NO

Pregunta 126

Pregunta
The periodontium's blood supply is derived from the superior and inferior alveolar arteries
Respuesta
  • YES
  • NO

Pregunta 127

Pregunta
The pressure during the mastication process is a signal regulating the nutritive function of periodontium
Respuesta
  • YES
  • NO

Pregunta 128

Pregunta
The supportive function of periodontium provides mechanical attachment of the tooth to the bone
Respuesta
  • YES
  • NO

Pregunta 129

Pregunta
Which part of the gingiva forms the soft tissue wall of the gingival sulcus
Respuesta
  • alveolar gingiva
  • marginal gingiva
  • interdental gingiva
  • alveolar bone

Pregunta 130

Pregunta
The statement about the interdental gingiva that is incorrect is
Respuesta
  • It fills the space between two approximating teeth/gingival embrasure
  • The gingival epithelium is comprised of stratified squamous epithelium which is keratinized in the outer surface of the interdental gingiva and non keratinized in the gingival col.
  • It is a narrow, smooth band, surrounding the teeth in a collar
  • No submucosa is found

Pregunta 131

Pregunta
Which is the described component of periodontium? 'It is a masticatory mucosa that covers the alveolar process of the jaw and surround the neck of the teeth'
Respuesta
  • Cementum
  • Periodontal ligament
  • Alveolar bone
  • Gingiva

Pregunta 132

Pregunta
The statements about periodontal ligament that are correct are:
Respuesta
  • It is a mesenchymal origin
  • Periodontal ligament is made up of epithelial tissue
  • Sacculus Dentis gives rise to periodontal ligament
  • It consists of outer and inner cortical plates of compact bone that enclose the spongiosa, a compartment composed of spongy bone.

Pregunta 133

Pregunta
The features of alveolar bone associated with childhood are
Respuesta
  • spongy bone with large spaces between the bars and plates containing red bone marrow
  • thin and well defined cortical borders
  • spongy bone with thick bars and plates
  • highly mineralized bone

Pregunta 134

Pregunta
The statements about gingiva that are correct are: 1. It is a complex anatomical structure composed of both hard and soft tissues 2. It consists of outer and inner cortical plates of compact bone that enclose the spongiosa, a compartment composed of spongy bone 3. It is a masticatory mucosa that covers the alveolar process of the jaw and surrounds the neck of the teeth 4. Healthy gingiva is usually coral pink
Respuesta
  • 1,2
  • 3,4
  • 2,3
  • 1,4

Pregunta 135

Pregunta
The features of cementum associated with childhood are: 1. an increase of cementum thickness 2. A reduction in cementum thickness 3. A large amount of cellular cementum is found on the tooth root 4. regeneration of cementum is not possible
Respuesta
  • 1,3
  • 1,4
  • 2,3
  • 2,4

Pregunta 136

Pregunta
The features of periodontal ligament associated with childhood are 1. wide periodontal ligament space 2. narrow periodontal ligament space 3. large amounts of the mature collagen fibers 4. large amounts of fluid ground substance 5. large number of cells, blood vessels and nerve fibers
Respuesta
  • 4,5
  • 2,3,4
  • 1,3,4
  • 3,4,5

Pregunta 137

Pregunta
The supportive function of periodontium is provided by 1. Korffs Fibers 2. Cementum 3. Gingiva 4. Alveolar bone 5. Periodontal ligament
Respuesta
  • 1,3,5
  • 1,2,4,5
  • 2,3,4,5
  • 1,4,5

Pregunta 138

Pregunta
Periodontium consists of four principal components 1. [blank_start]Alveolar bone[blank_end] 2. [blank_start]Periodontal ligament[blank_end] 3. [blank_start]Cementum[blank_end] 4. [blank_start]Gingiva[blank_end]
Respuesta
  • Alveolar bone
  • Periodontal ligament
  • Cementum
  • Gingiva

Pregunta 139

Pregunta
Gingiva is divided anatomically into: a/ [blank_start]marginal gingiva[blank_end] b/ [blank_start]attached gingiva[blank_end] c/ [blank_start]interdental gingiva[blank_end]
Respuesta
  • marginal gingiva
  • attached gingiva
  • interdental gingiva

Pregunta 140

Pregunta
Sacculus Dentis gives rise to three components of periodontium [blank_start]Cementum[blank_end], [blank_start]Periodontal Ligament[blank_end] and [blank_start]Alveolar bone[blank_end]
Respuesta
  • Cementum
  • Periodontal Ligament
  • Alveolar bone

Pregunta 141

Pregunta
The functions of Periodontium are 1. [blank_start]attachment and support[blank_end] 2. [blank_start]Protection[blank_end] 3. [blank_start]Nutrition[blank_end] 4. [blank_start]Formative function[blank_end] 5. [blank_start]Sensation[blank_end]
Respuesta
  • attachment and support
  • Protection
  • Nutrition
  • Formative function
  • Sensation

Pregunta 142

Pregunta
This question has long answers, I will just write them below The alveolar process consists of outer and inner cortical plates of compact bone that enclose the spongiosa, a compartment composed of spongy bone. The features of the spongy bone associated with childhood are [blank_start]ANSWER[blank_end] 1. Spongy bone with large spaces between the bars and plates containing red one marrow 2. Lowly mineralised bone 3. Spongy bone with tiny bars and plates 4. The bone contains numerous lymphatic vessels
Respuesta
  • ANSWER

Pregunta 143

Pregunta
The characteristics about each area of gingiva are A. Marginal Gingiva -- [blank_start]3,4[blank_end] B. Alveolar Gingiva -- [blank_start]1,5,7[blank_end] C. Interdental Gingiva -- [blank_start]2,4,6[blank_end] 1. Tightly bound to the underlying bone 2. It fills the space between two approximating teeth 3. It is a narrow, smooth band, surrounding the teeth in a collar 4. It forms the soft tissue wall of the gingival sulcus 5. Th width of gingiva may vary between 1-9 mm 6. A recession of interdental papillae occurs as a result of ageing 7. The width of gingiva in the incisor region is the widest
Respuesta
  • 3,4
  • 1,5,7
  • 2,4,6

Pregunta 144

Pregunta
The characteristics about each component of periodontium are A. Gingiva -- [blank_start]4,7[blank_end] B. Cementum -- [blank_start]2,3,6[blank_end] C. Periodontal Ligament -- [blank_start]2,5[blank_end] D. Alveolar bone -- [blank_start]1,2[blank_end] 1. It consists of outer and inner cortical plates of compact bone that enclose the spongiosa, a compartment composed of spongy bone 2. It develops from the dental follicle 3. It is an avascular tissue 4. It is a masticatory mucosa that covers the alveolar process of the jaw and surrounds the neck of the teeth 5. It is a fibrous connective tissue between alveolar bone and cementum covering the root 6. It is a connective tissue that covers dentin of the tooth root 7. it is the most peripheral component of periodontium
Respuesta
  • 4,7
  • 2,3,6
  • 2,5
  • 1,2

Pregunta 145

Pregunta
Tooth eruption serves as a definite indicator for children's health
Respuesta
  • YES
  • NO

Pregunta 146

Pregunta
The primary tooth germs are formed during the 2nd and 3rd months of embryonic life
Respuesta
  • YES
  • NO

Pregunta 147

Pregunta
At birth each alveolar process contains 8 primary tooth germs
Respuesta
  • YES
  • NO

Pregunta 148

Pregunta
First the crowns of the primary central incisors in the two jaws are formed, then the crowns of the primary lateral incisors, canines and molars
Respuesta
  • YES
  • NO

Pregunta 149

Pregunta
Ameloblasts are responsible for the root resorption in primary teeth
Respuesta
  • YES
  • NO

Pregunta 150

Pregunta
By the time a child is 2.5 - 3 years of age, all primary teeth should have erupted
Respuesta
  • YES
  • NO

Pregunta 151

Pregunta
At birth two alveolar processes contain:
Respuesta
  • 10 tooth germs
  • 20 tooth germs
  • 36 tooth germs
  • 24 tooth germs

Pregunta 152

Pregunta
The primary central and lateral incisors germs are laid down during the:
Respuesta
  • 6-8th months of age
  • 8-12th months of age
  • 12-18th months of age
  • 16-20th months of age

Pregunta 153

Pregunta
By the end of 2.5 -3 years of age should have erupted:
Respuesta
  • 8 primary teeth
  • 10 primary teeth
  • 20 primary teeth
  • 32 primary teeth

Pregunta 154

Pregunta
The roots of primary teeth begin to resorb
Respuesta
  • four years after the tooth completion
  • two years after the tooth eruption
  • 2-3 years after the root completion
  • 5 years after the tooth eruption

Pregunta 155

Pregunta
The root resorption of the primary molars begins on the inner surface of the root because:
Respuesta
  • Permanent tooth germs are located at the lingual side of the roots of the primary molars
  • Permanent tooth germs are located in the interradicular space of the primary molars
  • Permanent tooth germs are located at the medial side of the roots of the primary molars

Pregunta 156

Pregunta
Probable symptoms attending a difficult dentition of primary teeth are:
Respuesta
  • Fever
  • normal temperature
  • hematoma
  • drowsiness

Pregunta 157

Pregunta
Delayed tooth eruption is the emergence of a tooth into the oral cavity
Respuesta
  • 5-6 months after the normal eruption time
  • 1 month after the normal eruption time
  • 2 months after the normal eruption time

Pregunta 158

Pregunta
The eruption of primary teeth can be influenced by a number of factors, such as 1/ heredity 2/ physiological factors 3/ pathologic factors 4/ environmental factors
Respuesta
  • 1,2,3
  • 2,3,4
  • 1,3,4
  • 1,2,3,4

Pregunta 159

Pregunta
Signs and symptoms of the physiological process of a tooth eruption are: 1. a swelling of the gum around the erupting tooth without edema and infiltration 2. a sac filled with fluid and blood 3. irritability and itching 4. increased amounts of saliva
Respuesta
  • 1,3,4
  • 2,3,4
  • 1,2,3
  • 3,4

Pregunta 160

Pregunta
Causes of a precocious eruption of primary teeth are 1. pathologic pregnancy 2. superficial position of tooth germs 3. rachitis 4. hyperfunction of the endocrine glands 5. poor nutrition
Respuesta
  • 1,2,3,4
  • 2,4
  • 3,4,5
  • 1,5

Pregunta 161

Pregunta
Causes for a delayed primary tooth eruption are: 1. rachitis 2. superficial position of tooth germ 3. poor nutrition 4. pathologic pregnancy 5. hyper function of the endocrine glands
Respuesta
  • 1,2,3
  • 1,3,4
  • 3,4,5
  • 2,4,5

Pregunta 162

Pregunta
Stages of primary tooth development are: 1. [blank_start]Development of the teeth within jaw[blank_end] 2. [blank_start]Tooth eruption[blank_end] 3. [blank_start]Root formation[blank_end] 4. [blank_start]Root resorption[blank_end]
Respuesta
  • Development of the teeth within jaw
  • Tooth eruption
  • Root formation
  • Root resorption

Pregunta 163

Pregunta
Primary tooth germs develop from [blank_start]Dental lamina[blank_end]
Respuesta
  • Dental lamina

Pregunta 164

Pregunta
The pits found on the root surface during the tooth resorption are called [blank_start]resorption lacunae[blank_end]
Respuesta
  • resorption lacunae

Pregunta 165

Pregunta
The three layers of the resorption organ during the tooth resorption are: 1, [blank_start]Peripheral layer[blank_end] 2. [blank_start]Middle layer[blank_end] 3. [blank_start]Inner layer[blank_end]
Respuesta
  • Peripheral layer
  • Middle layer
  • Inner layer

Pregunta 166

Pregunta
Fill in the gaps with the latin terms 1. Precocious eruption - [blank_start]Dentitio praecox[blank_end] 2. Delayed tooth eruption - [blank_start]Dentitio Tarda[blank_end] 3. Difficult dentition - [blank_start]Dentitio difficilis[blank_end]
Respuesta
  • Dentitio praecox
  • Dentitio Tarda
  • Dentitio difficilis

Pregunta 167

Pregunta
Time or eruption A. 6-8 months -- [blank_start]2[blank_end] B - 8-12 months -- [blank_start]4[blank_end] C - 12-16 months -- [blank_start]1[blank_end] D - 16-20 months -- [blank_start]3[blank_end] E - 20-30 months -- [blank_start]5[blank_end] 1. First molars 2. Central incisors 3. Canines 4. Lateral incisors 5. Second molars
Respuesta
  • 2
  • 4
  • 1
  • 3
  • 5

Pregunta 168

Pregunta
A. Permanent tooth germs develop between the roots of -- [blank_start]2[blank_end] B. The sockets in the jaws in which the roots of teeth with periodontal ligament are held in the alveolar process of maxilla and mandible are called -- [blank_start]4[blank_end] C. The root resorption is caused by -- [blank_start]1[blank_end] D. The resorptive lesions are characterised by the presence of -- [blank_start]5[blank_end] E. The root resorption is a process of a destruction of cementum, dentin and -- [blank_start]3[blank_end] 1. Osteoclasts 2. Primary teeth 3. Pulp 4. Dental alveoli 5. A jagged surface contour of dentin
Respuesta
  • 2
  • 4
  • 1
  • 5
  • 3

Pregunta 169

Pregunta
Some of the permanent tooth germs are formed during the embryonic life
Respuesta
  • YES
  • NO

Pregunta 170

Pregunta
At birth each alveolar process contains 10 primary tooth germs and 8 permanent tooth germs
Respuesta
  • YES
  • NO

Pregunta 171

Pregunta
The normal continuation of permanent tooth eruption is 5 months
Respuesta
  • YES
  • NO

Pregunta 172

Pregunta
The root formation of permanent teeth is accommodated during the tooth eruption and is a consequence, not a cause of the process
Respuesta
  • YES
  • NO

Pregunta 173

Pregunta
The initial mineralization of the permanent first molar and the intensive mineralization of primary teeth simultaneously occur during the 9th month of embryonic life.
Respuesta
  • YES
  • NO

Pregunta 174

Pregunta
The tooth germs of the first permanent molars are laid down during the:
Respuesta
  • second month of embryonic life
  • third month of embryonic life
  • fourth month of embryonic life
  • sixth month of embryonic life
  • tenth month of embryonic life

Pregunta 175

Pregunta
The tooth germs of the permanent incisors are laid down during the:
Respuesta
  • sixth month of embryonic life
  • tenth month of embryonic life
  • fourth month of embryonic life
  • third month of embryonic life

Pregunta 176

Pregunta
By the age of 11-12 should have erupted
Respuesta
  • 20 permanent teeth
  • 8 permanent teeth
  • 28 permanent teeth
  • 24 permanent teeth

Pregunta 177

Pregunta
The statements about the mineralization of permanent teeth that are correct are
Respuesta
  • The permanent molars begin to mineralise in utero
  • The permanent incisors begin to mineralise during the first months after birth
  • The premolars and molars mineralise at about age 3 years
  • Wisdom teeth begin to mineralize at about age 8 years
  • Mineralization of the first and second permanent molars occurs simultaneously

Pregunta 178

Pregunta
The stages of root formation of permanent teeth that can be distinguished on radiograph are:
Respuesta
  • Stage of unformed root apex
  • Stage of mineralization
  • Stage of unclosed root apex
  • stage of formed root apex

Pregunta 179

Pregunta
Delayed tooth eruption of permanent teeth is the emergence of a tooth into the oral cavity
Respuesta
  • 5 months after the normal eruption time
  • 8 months after the normal eruption time
  • 3 years after the normal eruption time
  • 2 years after the normal eruption time

Pregunta 180

Pregunta
Which of the following statements are correct. YES or NO a/ All deciduous teeth arise form dental lamina, later the permanent successors arise from its lingual extension and permanent molars from its distal extension -- [blank_start]YES[blank_end] b/ Permanent teeth usually start erupting at around age 8 years -- [blank_start]NO[blank_end] c/ Root formation of permanent teeth is accommodated during tooth eruption and is a consequence, not a cause of the disease -- [blank_start]YES[blank_end] d/ Permanent root development is complete approximately 3-4 years after their eruption -- [blank_start]YES[blank_end]
Respuesta
  • YES
  • NO
  • YES
  • YES

Pregunta 181

Pregunta
Which is the best described stage of tooth development? ''There is a breakdown of the gingival connective tissue overlying the crown of the erupting tooth. As the process approaches the overlying epithelium merges with the oral gingival epithelium. Finally the place of the fused tissues is greatly reduced'
Respuesta
  • mineralization of the tooth
  • crown formation
  • tooth eruption
  • root formation

Pregunta 182

Pregunta
An important role during the period of mineralization of dental hard tissues play: 1/ Macroelements such as Ca and P 2/ Microelements such as F, Mo, V, Mn, Co 3/ Vitamin A 4/ Vitamin D 5/ Vitamin E
Respuesta
  • 1,2,3
  • 1,2,4
  • 2,3,4
  • 3,4,5

Pregunta 183

Pregunta
Physical factors for precocious eruption of permanent teeth are: 1. [blank_start]Young mothers[blank_end] 2. [blank_start]first pregnancy/primigradiva[blank_end] 3. [blank_start]children with high weight for height[blank_end] 4. [blank_start]female[blank_end]
Respuesta
  • Young mothers
  • first pregnancy/primigradiva
  • children with high weight for height
  • female

Pregunta 184

Pregunta
The right combination of statements about permanent teeth is 1. The germs of the permanent incisors arise from the distal extension of dental lamina 2. Mineralization begins from the incised edge of the anterior teeth and he tips of the cusps of molars and proceeds towards the cervical region 3. By the age of 11-12 most children have a full set of permanent teeth except for the third molars 4. There are two stages in the development of the root of permanent teeth
Respuesta
  • 1,2
  • 2,3
  • 3,4
  • 1,3

Pregunta 185

Pregunta
The right combination of statements about the basic principles in tooth eruption is: 1. Upper teeth usually erupt before lower teeth 2. Tooth eruption occurs in specific eruption times 3. The teeth on the upper jaw usually erupt one to two months after the same tooth on the lower jaw 4. Different dental groups emerge in the oral cavity in order known as the dental eruption sequence
Respuesta
  • 1,2,3
  • 2,3,4
  • 1,2,4
  • 1,3,4

Pregunta 186

Pregunta
Three stages of root formation of permanent teeth are: 1. [blank_start]Stage of unformed root apex[blank_end] 2. [blank_start]Stage of unclosed root apex[blank_end] 3. [blank_start]Stage of formed root apex[blank_end]
Respuesta
  • Stage of unformed root apex
  • Stage of unclosed root apex
  • Stage of formed root apex

Pregunta 187

Pregunta
Metabolic disturbances may be a cause of [blank_start]delayed[blank_end] tooth eruption
Respuesta
  • delayed

Pregunta 188

Pregunta
Hypofunction of endocrine glands may be a cause of [blank_start]delayed[blank_end] tooth eruption
Respuesta
  • delayed

Pregunta 189

Pregunta
Match the stages of root formation with their characteristics: A. Stages of unformed root apex -- [blank_start]2,6,9[blank_end] B. Stage of unclosed root apex -- [blank_start]3,4,8[blank_end] C -- Stage of formed root apex -- [blank_start]1,5,7[blank_end] 1. The tooth is with a completed root length 2. The walls of the canal are parallel to the long axis of the root 3. The apex continues to close, and the walls of the root canal thicken 4. The apical end is still partially open 5. The tooth is with a closed apical foramen 6. The apex is funnel shaped and typically wider than the coronal aspect of the canal 7. The periodontal membrane has a uniform width around the root and the apex 8. There is no growing zone of the tooth root 9. The periodontal ligament space is demonstrated only on the side of the newly formed walls of the root
Respuesta
  • 2,6,9
  • 3,4,8
  • 1,5,7

Pregunta 190

Pregunta
The correct dental eruption sequence is : [blank_start]3,1,2,4,6,7,5[blank_end] 1. Central incisors 2. Lateral incisors 3. First molars 4. First premolars 5. Second molars 6. Canines 7. Second premolars
Respuesta
  • 3,1,2,4,6,7,5

Pregunta 191

Pregunta
The functions of cementum are a/ [blank_start]protective function[blank_end] b/ Function to [blank_start]anchor tooth[blank_end] securely to the [blank_start]bony walls[blank_end] of the [blank_start]tooth socket[blank_end] c/ an [blank_start]excessive[blank_end] formation of [blank_start]cementum[blank_end] on the [blank_start]apical root surface[blank_end] to compensate for [blank_start]occlusal and incisal wear[blank_end] and contribute to [blank_start]continuous passive eruption of tooth[blank_end]
Respuesta
  • protective function
  • anchor tooth
  • bony walls
  • tooth socket
  • excessive
  • cementum
  • apical root surface
  • occlusal and incisal wear
  • continuous passive eruption of tooth
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