Quiz
Paediatric Dentistry PMU-Part 2 (units 5-9)
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Perguntas do quiz (191)
1Dental Pulp is a loose connective tissue that occupies a space called cavum pulp.
- AYES
- BNO
2The walls of canalis radicis dentis becomes thinner due to a dentin deposition
- AYES
- BNO
3The dental pulp of the primary teeth begins to develop during the second month of embryonic life from papilla dentis
- AYES
- BNO
4Pulp is a specialized epithelial tissue
- AYES
- BNO
5Zone of Weil contains Odontoblasts
- AYES
- BNO
6Dental Pulp is composed of Procollagen and Collagen fibres
- AYES
- BNO
7The fibroblasts of Dental Papilla are responsible for the secretion of Procollagen, Collagen and Glucosaminoglycans
- AYES
- BNO
8Dental Pulp is divided into 2 parts:
a/ [blank_start]Coronal Pulp[blank_end]
b/ [blank_start]Radicular Pulp[blank_end]- ACoronal Pulp
- BRadicular Pulp
9The cellular elements of Pulp are
a/ [blank_start]Resident cell population[blank_end]
b/ [blank_start]Migratory cell Population[blank_end]- AResident cell population
- BMigratory cell Population
10The 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]- AOdontoblstic Zone in the periphery
- BSubodontoblastic layer
- CCell free zone of Weil
- DCell - Rich Zone
- EPulp Core
11The 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]- AFormative
- BNutritive
- CSensory
- DProtective
12The 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]- AEmbryonic
- BFunctional
- CSenile
13Pulp is surrounded by:
- AEnamel
- BCementum
- CDentin
14Pulp is formed from the:
- ADental Follicle
- BDental Papilla
- CEnamel Organ
15The statements about odontoblasts that are correct are:
- AThey are composed of Cross striated fibres
- BThey are first observed as elongated cells, then the cells become pear shaped
- CTheir long protoplasmic processes extend into the dentin
- DThey are undifferentiated cells
- EThe nucleus is located in the basal portion of the cell
16The statements about fibroblasts in Dental Pulp that are correct are:
- Aa. They are star shaped cells
- Bb. They are elongated spindle cells with a large oval nucleus
- Cc. There is a large number of vacuoles in the cytoplasm
- Dd. They have numerous cytoplasmic processes
17Read 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/- Aa. Odontoblasts
- Bb. Fibroblasts
- Cc. Histiocytes
- Dd. Mastocytes
- Ee. Blood cells
18The 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]- ADirect innervation theory
- BTransduction Theory
- CHydrodynamic Theory
19The 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- AA/ 1,2,3
- BB/ 2,3,4
- CC/ 1,2,4
- DD/ 1,3,4
20The 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- AA/ 1,2
- BB/ 1,3
- CC/ 2,3
- DD/ 2,4
21The pulp core contains:
1. Odontoblasts
2. Zone of Weil
3. Intercellular substance
4. Fibroblasts, defence cells, blood vessels and Nerves- AA/ 1,2
- BB/ 3,4
- CC/ 2,4
- DD/ 1,3
22The 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- AA/ 1,2,3
- BB/ 2,3,5
- CC/ 2,3,4
- DD/ 1,2,5
23Which of the following statements are correct? Write down the answer with 'YES' or 'NO'
(Just identify the Correct 'YES' Statements)- Aa. The ground substance of pulp is composed of glycosaminoglycans, mucopolysaccharides, electrolytes and water
- Bb. 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
- Cc. There are no changes in the chemical composition of the pulp ground substance during the different stages in its life
- Dd. Myelinated nerve fibres form the subodontoblastic plexus of Raschkow
- Ee. The pores of the fenestrated capillaries permit a rapid exchange of water and solutes
- Ff. The pulp chambers in adults teeth are much larger than in children
- Gg. During the process of root resorption the pulp of the primary teeth is in functional stage
- Hh. There are no elastic fibers in pulp except those present in the walls of the larger blood vessels
24Match 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- A2,5,7,10
- B4,5,8,9
- C1,3,6,8
25Match 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- A1,4
- B2,3
26The 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- AA/ 1,2,3,5,6,7
- BB/ 1,4,5,7,8
- CC/ 1,2,4,5,8
- DD/ 1,2,5,6,8
27Cementum is mesodermal in origin
- AYES
- BNO
28Cementum is developed from the inner layer of the fully formed saculus dentis
- AYES
- BNO
29Cementum is a Vascular tissue.
- AYES
- BNO
30The structural units of cementum are cells, fibers and intercellular substance
- AYES
- BNO
31Cementum is continuously formed throughout a persons entire life
- AYES
- BNO
32Cementum is the least mineralised of the calcified dental tissues
- AYES
- BNO
33The cellular cementum covers the dentin of the whole root surface
- AYES
- BNO
34Precementum is an unmineralised matrix of cementum
- AYES
- BNO
35Two types of cells are functionally concerned with cementum
a/ [blank_start]Cementoblasts[blank_end]
b/ [blank_start]Cementocytes[blank_end]- ACementoblasts
- BCementocytes
36The two types of cementum forms are
a/ [blank_start]acellular cementum[blank_end]
b/ [blank_start]cellular cementum[blank_end]- Aacellular cementum
- Bcellular cementum
37Cementum is composed of two types of matrix fibers:
a/ [blank_start]Primarily intrinsic fibers[blank_end]
b/ [blank_start]Primarily extrinsic fibers[blank_end]- APrimarily intrinsic fibers
- BPrimarily extrinsic fibers
38The cells responsible for cementogenesis are:
- AOdontoblasts
- BCementoblasts
- Cameoblasts
- Dosteoblasts
39The most accurate and detailed description of cementum is:
- ACementum is a hard dental tissue
- BCementum is formed during the development of tooth root
- CIt is a specialized calcified substance covering the root of a tooth
- DIt is a hard dental tissue that covers the root of a tooth and is formed together with its development
40Read 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- ACementoblasts
- BMesenchymal cells
- CCementocytes
- DHistiocytes
41The corkscrew fibers that pass between odontoblasts and reach predentin are called:
- ASharpey's fibers
- BPeriodontal ligament
- CMatrix fibers
- DKorffs Fibers
42Cementum is formed:
- Aduring the ontogenetic development of the tooth germ
- Bafter the tooth eruption
- Ccontinuously throughout a person's entire life
- Da+b+b
43Cementocytes are:
- ACells rich in acid mucopolysaccharides
- BCells that lie in spaces known as lacunae
- CCells that show a gradual decrease in the size of the cell, nucleus and cytoplasm with ageing
- DCells with reduced secretory activity
- Ea+b+c+d
44The statements about the acellular cementum that are correct are:
- AIt is called primary cementum and is mainly found on cervical and middle root portions
- BIt is an outermost layer
- CRegeneration of cementum is possible
- DRegeneration of cementum is not posssible
45The features of cementum associated with childhood are:
- Aincrease of cementum thickness
- Breduction in cementum thickness
- Clowly mineralised cementum
- Da large amount of cellular cementum is found on the tooth root
46The 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- AA/ 1,2,3
- BB/ 2,4,5
- CC/ 1,3,5
- DD/ 3,4,5
47The 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- AA/ 1,2,3
- BB/ 1,4,5
- CC/ 1,3,4
- DD/ 3,4,5
48The 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- AA/ 1,3,6
- BB/ 1,3,5
- CC/ 2,4,6
- DD/ 3,4,5
49Match 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- A1,3,5
- B2,4,6,7
50Match 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- A2,4
- B1,3
51Which 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]- AYES
- BYES
- CNO
- DNO
52The 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- AANSWER IS BELOW
53Periodontal ligament is a connective tissue structure, an integral part of Periodontium
- AYES
- BNO
54Periodontal ligament attaches the tooth to the surrounding alveolar bone within which it sits and allows functional movement of the tooth.
- AYES
- BNO
55Periodontal ligament is a connective tissue, located between dentin and dental pulp
- AYES
- BNO
56Periodontal ligament consists of fibres, cells, ground substance, blood and lymphatic vessels, nerve fibres
- AYES
- BNO
57The most important elements of periodontal ligament are the cells
- AYES
- BNO
58Periodontal 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.
- AYES
- BNO
59Periodontal ligament is made up of fibres that course between [blank_start]alveolar bone[blank_end] and [blank_start]cementum[blank_end] of the tooth
- Aalveolar bone
- Bcementum
60The 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]- AFibroblasts
- BCementoblasts
- COsteoblasts
- DHistiocytes
- EMastocytes
- FLymphocytes
- GUndifferentiated cells
- HEpithelial cell rests of Malassez
61The sensory innervation of periodontal ligament is derived from branches of [blank_start]n.Trigeminus[blank_end]
- An.Trigeminus
62The 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- ABECAUSE TOO LONG TO ADD BLANK
63The major collagen type found in periodontal ligament is [blank_start]TYPE 1[blank_end]
- ATYPE 1
64The 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]
- Athe middle third of the root
- Bcervical and apical third of the root.
65Periodontal ligament consists of
- AFibers
- BCells
- CAmorphous inorganic substance
- DGround substance
66Periodontal ligament fibroblasts are
- ACylindrical cells
- BSpindle-shaped cells
- CFound in large numbers
- DResponsible for the synthesis of collagen
- ESensory cells
67The statements about the osteoblasts in periodontal ligament that are correct are:
- AThey are the most numerous cell type in periodontal ligament
- BThey are located on the alveolar bone surface
- CThey are responsible for the bone formation
- DAt certain times they produce secondary cementum
- EAt certain times they are converted into osteoclasts
- FThey are errant cells
68It is suggested that cyst formation requires a proliferation of:
- AFibroblasts in periodontal ligament
- BCementoblasts in periodontal ligament
- CHistiocytes in periodontal ligament
- DEpithelial cell rests of Malassez in periodontal ligament
- EOsteoblasts in periodontal ligament
69The statements about the ground substance of periodontal ligament that are correct are:
- AIt is the environment that surrounds fibres, blood vessels, nerve fibres and cells
- BAll components of periodontal ligament ground substance are presumed to be secreted by osteoblasts
- CIt acts as a cushion for the displaced tooth
- DIt is located on the cementum surface
- EIt is responsible for the ion and water delivery and exchange
70The features of periodontal ligament associated with childhood are:
- AWide periodontal ligament space
- BNarrow periodontal ligament space
- CLarge amounts of mature collagen fibers
- DLarge amounts of fluid ground substance
- ELarge number of cells, blood vessels and nerve fibers
71The 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- A1,2,3
- B2,3,4
- C1,4
- D1,3
72The 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- A1,4
- B2,3,4
- C3,4
- D1,2,3,4
73Ligamentum circulate consists of:
1. Gingival ligament
2. Circumferential gingival fibers
3. Alveolar crest fibers
4. Sharpey's fibers- A1,2,3
- B2,3,4
- C3,4
- D1,2,3,4
74The 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- A1,2,3,4
- B2,3,4
- C2,3,4,5
- D3,4,5
75The supportive function of periodontal ligament is achieved by the:
1. Horizontal fibers
2. Blood vessels
3. Apical fibers
4. Oblique fibers
5. Histiocytes- A1,2,3
- B1,3,4
- C3,4,5
- D1,4,5
76Periodontal ligament mechanoreceptors are
1. Ruffini's corpuscles
2. Meissner's corpuscles
3. Free nerve endings
4. Spindle type nerve ending- A1,2
- B1,2,3
- C1,2,4
- D3,4
77Match 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- A2
- B1,4,5,6,7
- C3
78YES 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]- AYES
- BNO
- CNO
- DYES
- EYES
79The 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- A4,5,6,8,9
- B1,2,4,8,9
- C1,3,4,5,7,8
- D2,4,5,6,8
80Oral Mucosa consists of epithelium/lamina epithelial/, mucosa/lamina propria mucosae/ submucosa/lamina submucosa.
- AYES
- BNO
81The epithelium of the oral mucosa is mesodermal in origin
- AYES
- BNO
82The lining mucosa covers the lips, the inside of the cheeks, floor of the mouth, inferior surface of the tongue and soft palate.
- AYES
- BNO
83Stratum basale of oral mucosa consists of several layers of compactly arranged cells, firmly attached to the basement membrane
- AYES
- BNO
84Lamina Propria mucosae is found above the basement membrane
- AYES
- BNO
85No submucosa is found in gingiva, hard palate and dorm of tongue
- AYES
- BNO
86Stratum granulosum of the masticatory mucosa consists of two to five layers of rhomboid cells containing keratohyalin granules
- AYES
- BNO
87Oral Mucosa can be divided into three main categories based on the function and histology into lining, masticatory and specialised mucosa
- AYES
- BNO
88Lamina Epithelialis is of
- Aendodermal origin
- Bmesenchymal origin
- Cectodermal origin
- Dmixed origin
89Lamina propria mucosae and lamina submucosa are of
- Aectodermal origin
- Bendodermal origin
- Cmixed origin
- Dmesenchymal origin
90Stratum basale and stratum spinosum are the two layers of the:
- Aepithelium of the lining mucosa
- Bmasticatory mucosa
- Cspecialized mucosa
- Dlamina propria mucosae
91The characteristics of the masticatory mucosa are:
- AIt covers hard palate and alveolar process
- BIt covers dorm of the tongue and soft palate
- CIt is subjected to great stress and strain distributions
- DIt has greater reparative capacity than lining mucosa
92The specialized mucosa covers:
- AHard Palate and alveolar bone
- Bdorsum of the tongue and soft palate
- Clips
- Dinner surface of the cheeks
93The functions of oral mucosa include all of the following except for
- Asensation
- Bbeginning of the digestion process
- Csecretion
- Dprotection
- Ethermoregulation
- Fresorption
94The characteristics of the lingual mucosa are:
- ANo submucosa is found in the lingual mucosa
- BIt is composed of loose connective tissue
- CThere are four types of papillae found on the dorsal surface of the tongue
- DIn cells Parakeratosis occurs which leads to exfoliation
- ELamina Propria mucosae forms prominent papillary folds covered by epithelium
95The taste sensation is experienced best on
- ALips
- BTongue
- CPharynx
- DSoft Palate
- ETonsils
96The 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- A1,2,3
- B1,2,4
- C2,3,4
- D1,2,3,4
97The 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- A1,2,3
- B2,3,4
- C1,2,4
- D1,2,3,4
98As 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- A1,2,3
- B1,2,3,4
- C3,4,5,6
- D1,4,5,6
99The different types of Papillae on the tongue are:
1. Reticular
2. Filiform
3. Fungiform
4. Dendriform
5. Foilate
6. Circumvallate- A1,2,3,4
- B4,5,6
- C2,3,5,6
- D2,3,4,5,6
100There 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]- AFiliform Papillae
- BFungiform Papillae
- CFoliate Papillae
- DCircumvallate Papillae
101The 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]- AStratum basale
- BStratum Spinosum
- CStratum granulosum
102The blood supply of oral mucosa originates from:
[blank_start]aa.carotis externa[blank_end] and [blank_start]aa. maxillaris interna[blank_end]- Aaa.carotis externa
- Baa. maxillaris interna
103The veins or oral mucosa follow the path of the corresponding arteries and drain into [blank_start]V. Jugularis Interna[blank_end]
- AV. Jugularis Interna
104The 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]- AN.Trigeminus
- BN. Glossopharingeus
- CN. Hypoglossus
- DN. Facialis
105A. 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- A2
- B1
- C3
106Match 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- A2,3,5,9
- B1,4,6,7,8
107Match 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- A2,4,5,6
- B1,3,7
108The 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]- ASensation
- Bbeginning of the digestion process
- Csecretion
- Dexcretion
- Eresorption
- Fprotection
109Periodontium is a complex anatomical structure composed of both hard and soft tissues
- AYES
- BNO
110Gingiva 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
- AYES
- BNO
111The facial attached gingiva is narrowest in the area of incisors
- AYES
- BNO
112Healthy gingiva usually has a colour that has been described as dark red
- AYES
- BNO
113Physiological changes associated with the tooth eruption occur in periodontium as the dentition changes from primary to permanent teeth
- AYES
- BNO
114Periodontal ligament is ectodermal in origin
- AYES
- BNO
115Ligamentum circulare dentis consists of gingival ligament, circumferential gingival fibers and alveolar crest fibers
- AYES
- BNO
116The attached gingiva is continuous with the marginal gingiva
- AYES
- BNO
117The width of the attached gingiva in the incisor region is the widest
- AYES
- BNO
118The interdental papilla is also known as the interdental gingiva
- AYES
- BNO
119The healthy interdental papilla fill in the area between the teeth apical to their contact areas
- AYES
- BNO
120The wall of the gingival sulcus is lined by keratinised epithelium
- AYES
- BNO
121Ligamentum circulare and connective tissue attachment serve as a physiologic barrier of periodontium
- AYES
- BNO
122The circular gingival fibers attach gingiva to the root dentin
- AYES
- BNO
123Sharper's fibers extend from periodontal ligament into cementum and act as a buffer medium against stress
- AYES
- BNO
124The fibers of van Korff are corkscrew fibers that pass between odontoblasts and reach predentin
- AYES
- BNO
125The formative function of periodontium is provided by the fibers and ground substance in the periodontal ligament
- AYES
- BNO
126The periodontium's blood supply is derived from the superior and inferior alveolar arteries
- AYES
- BNO
127The pressure during the mastication process is a signal regulating the nutritive function of periodontium
- AYES
- BNO
128The supportive function of periodontium provides mechanical attachment of the tooth to the bone
- AYES
- BNO
129Which part of the gingiva forms the soft tissue wall of the gingival sulcus
- Aalveolar gingiva
- Bmarginal gingiva
- Cinterdental gingiva
- Dalveolar bone
130The statement about the interdental gingiva that is incorrect is
- AIt fills the space between two approximating teeth/gingival embrasure
- BThe 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.
- CIt is a narrow, smooth band, surrounding the teeth in a collar
- DNo submucosa is found
131Which 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'- ACementum
- BPeriodontal ligament
- CAlveolar bone
- DGingiva
132The statements about periodontal ligament that are correct are:
- AIt is a mesenchymal origin
- BPeriodontal ligament is made up of epithelial tissue
- CSacculus Dentis gives rise to periodontal ligament
- DIt consists of outer and inner cortical plates of compact bone that enclose the spongiosa, a compartment composed of spongy bone.
133The features of alveolar bone associated with childhood are
- Aspongy bone with large spaces between the bars and plates containing red bone marrow
- Bthin and well defined cortical borders
- Cspongy bone with thick bars and plates
- Dhighly mineralized bone
134The 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- A1,2
- B3,4
- C2,3
- D1,4
135The 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- A1,3
- B1,4
- C2,3
- D2,4
136The 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- A4,5
- B2,3,4
- C1,3,4
- D3,4,5
137The supportive function of periodontium is provided by
1. Korffs Fibers
2. Cementum
3. Gingiva
4. Alveolar bone
5. Periodontal ligament- A1,3,5
- B1,2,4,5
- C2,3,4,5
- D1,4,5
138Periodontium 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]- AAlveolar bone
- BPeriodontal ligament
- CCementum
- DGingiva
139Gingiva 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]- Amarginal gingiva
- Battached gingiva
- Cinterdental gingiva
140Sacculus 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]- ACementum
- BPeriodontal Ligament
- CAlveolar bone
141The 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]- Aattachment and support
- BProtection
- CNutrition
- DFormative function
- ESensation
142This 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- AANSWER
143The 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- A3,4
- B1,5,7
- C2,4,6
144The 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- A4,7
- B2,3,6
- C2,5
- D1,2
145Tooth eruption serves as a definite indicator for children's health
- AYES
- BNO
146The primary tooth germs are formed during the 2nd and 3rd months of embryonic life
- AYES
- BNO
147At birth each alveolar process contains 8 primary tooth germs
- AYES
- BNO
148First the crowns of the primary central incisors in the two jaws are formed, then the crowns of the primary lateral incisors, canines and molars
- AYES
- BNO
149Ameloblasts are responsible for the root resorption in primary teeth
- AYES
- BNO
150By the time a child is 2.5 - 3 years of age, all primary teeth should have erupted
- AYES
- BNO
151At birth two alveolar processes contain:
- A10 tooth germs
- B20 tooth germs
- C36 tooth germs
- D24 tooth germs
152The primary central and lateral incisors germs are laid down during the:
- A6-8th months of age
- B8-12th months of age
- C12-18th months of age
- D16-20th months of age
153By the end of 2.5 -3 years of age should have erupted:
- A8 primary teeth
- B10 primary teeth
- C20 primary teeth
- D32 primary teeth
154The roots of primary teeth begin to resorb
- Afour years after the tooth completion
- Btwo years after the tooth eruption
- C2-3 years after the root completion
- D5 years after the tooth eruption
155The root resorption of the primary molars begins on the inner surface of the root because:
- APermanent tooth germs are located at the lingual side of the roots of the primary molars
- BPermanent tooth germs are located in the interradicular space of the primary molars
- CPermanent tooth germs are located at the medial side of the roots of the primary molars
156Probable symptoms attending a difficult dentition of primary teeth are:
- AFever
- Bnormal temperature
- Chematoma
- Ddrowsiness
157Delayed tooth eruption is the emergence of a tooth into the oral cavity
- A5-6 months after the normal eruption time
- B1 month after the normal eruption time
- C2 months after the normal eruption time
158The 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- A1,2,3
- B2,3,4
- C1,3,4
- D1,2,3,4
159Signs 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- A1,3,4
- B2,3,4
- C1,2,3
- D3,4
160Causes 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- A1,2,3,4
- B2,4
- C3,4,5
- D1,5
161Causes 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- A1,2,3
- B1,3,4
- C3,4,5
- D2,4,5
162Stages 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]- ADevelopment of the teeth within jaw
- BTooth eruption
- CRoot formation
- DRoot resorption
163Primary tooth germs develop from [blank_start]Dental lamina[blank_end]
- ADental lamina
164The pits found on the root surface during the tooth resorption are called [blank_start]resorption lacunae[blank_end]
- Aresorption lacunae
165The 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]- APeripheral layer
- BMiddle layer
- CInner layer
166Fill 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]- ADentitio praecox
- BDentitio Tarda
- CDentitio difficilis
167Time 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- A2
- B4
- C1
- D3
- E5
168A. 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- A2
- B4
- C1
- D5
- E3
169Some of the permanent tooth germs are formed during the embryonic life
- AYES
- BNO
170At birth each alveolar process contains 10 primary tooth germs and 8 permanent tooth germs
- AYES
- BNO
171The normal continuation of permanent tooth eruption is 5 months
- AYES
- BNO
172The root formation of permanent teeth is accommodated during the tooth eruption and is a consequence, not a cause of the process
- AYES
- BNO
173The initial mineralization of the permanent first molar and the intensive mineralization of primary teeth simultaneously occur during the 9th month of embryonic life.
- AYES
- BNO
174The tooth germs of the first permanent molars are laid down during the:
- Asecond month of embryonic life
- Bthird month of embryonic life
- Cfourth month of embryonic life
- Dsixth month of embryonic life
- Etenth month of embryonic life
175The tooth germs of the permanent incisors are laid down during the:
- Asixth month of embryonic life
- Btenth month of embryonic life
- Cfourth month of embryonic life
- Dthird month of embryonic life
176By the age of 11-12 should have erupted
- A20 permanent teeth
- B8 permanent teeth
- C28 permanent teeth
- D24 permanent teeth
177The statements about the mineralization of permanent teeth that are correct are
- AThe permanent molars begin to mineralise in utero
- BThe permanent incisors begin to mineralise during the first months after birth
- CThe premolars and molars mineralise at about age 3 years
- DWisdom teeth begin to mineralize at about age 8 years
- EMineralization of the first and second permanent molars occurs simultaneously
178The stages of root formation of permanent teeth that can be distinguished on radiograph are:
- AStage of unformed root apex
- BStage of mineralization
- CStage of unclosed root apex
- Dstage of formed root apex
179Delayed tooth eruption of permanent teeth is the emergence of a tooth into the oral cavity
- A5 months after the normal eruption time
- B8 months after the normal eruption time
- C3 years after the normal eruption time
- D2 years after the normal eruption time
180Which 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]- AYES
- BNO
- CYES
- DYES
181Which 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'- Amineralization of the tooth
- Bcrown formation
- Ctooth eruption
- Droot formation
182An 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- A1,2,3
- B1,2,4
- C2,3,4
- D3,4,5
183Physical 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]- AYoung mothers
- Bfirst pregnancy/primigradiva
- Cchildren with high weight for height
- Dfemale
184The 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- A1,2
- B2,3
- C3,4
- D1,3
185The 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- A1,2,3
- B2,3,4
- C1,2,4
- D1,3,4
186Three 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]- AStage of unformed root apex
- BStage of unclosed root apex
- CStage of formed root apex
187Metabolic disturbances may be a cause of [blank_start]delayed[blank_end] tooth eruption
- Adelayed
188Hypofunction of endocrine glands may be a cause of [blank_start]delayed[blank_end] tooth eruption
- Adelayed
189Match 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- A2,6,9
- B3,4,8
- C1,5,7
190The 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- A3,1,2,4,6,7,5
191The 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]- Aprotective function
- Banchor tooth
- Cbony walls
- Dtooth socket
- Eexcessive
- Fcementum
- Gapical root surface
- Hocclusal and incisal wear
- Icontinuous passive eruption of tooth
Informações
- Descrição
- 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
- Autor
- mohammed jameel
- Idioma
- English
- Visualizações
- 128
- Etiquetas
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