Test
biomaterial 2
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Preguntas del test (51)
1The basic epoxy resin-based materials show the following properties:
- AA. They are radioopaque
B. They are radiotranslucent
C. Chemically adhere to dentine
D. Mechanically adhere to dentine
E. High strength - BA. They are radioopaque
C. Chemically adhere to dentine
E. High strength
- AA. They are radioopaque
2Chelating agents or 10% citric acid are used for the purpose of:
- AA. Removing the organic wastes from the canal
B. Maintaining the organic tissues intact
C. Intact removal of organic tissues
D. Maintaining the organic debris intact within the canal
E. Achieving a foaming effect, thus contributing to bacterial removal from the root canal - BA. Removing the organic wastes from the canal
B. Maintaining the organic tissues intact
- AA. Removing the organic wastes from the canal
3Irrigation tools are good for:
- AA. Loosing the debris within the canal, thus contributing to their mechanical removalA. Loosing the debris within the canal, thus contributing to their mechanical removal
C. Decreasing the number of pathogenic germs in the endodontic space - BA. Loosing the debris within the canal, thus contributing to their mechanical removal B. Increasing the number of pathogenic germs within the endodontic space
C. Decreasing the number of pathogenic germs in the endodontic space
D. Making the debris removal useless within the canal
E. Having a chemical action on the debris within the canal
- AA. Loosing the debris within the canal, thus contributing to their mechanical removalA. Loosing the debris within the canal, thus contributing to their mechanical removal
4The hard intracanal materials include:
- AA. The gutta-percha cones
B. Zinc oxyphosphate cement C. Bakelite
D. Silver cones
E. Synthetic resins cones - BA. The gutta-percha cones
D. Silver cones
E. Synthetic resins cones
(A,D,E)
- AA. The gutta-percha cones
5Plastic materials that do not set into the canals:
- AA. Zinc oxide-eugenol paste
B. Zinc oxyphosphate cements
C. Bakelite
D. Long-lasting antiseptic paste (Iodoform)
E. Biologically active pastes (based on calcium hydroxide) - BD. Long-lasting antiseptic paste (Iodoform)
E. Biologically active pastes (based on calcium hydroxide)
- AA. Zinc oxide-eugenol paste
6The setting plastic materials for root canal filling are as following:
- AA. Long-lasting antiseptic paste
B. Biologically active paste
C. Hermetic zinc-eugenol oxide paste
D. Bakelite
E. Hermetic pastes based on epoxide resins - BC. Hermetic zinc-eugenol oxide paste
D. Bakelite
E. Hermetic pastes based on epoxide resins
- AA. Long-lasting antiseptic paste
7Irrigation solutions are good for:
- AA. They loosen the debris within the canal, thus contributing to their mechanical removal
B. Increase the number of pathogenic germs within the endodontic space
C. Decrease the number of pathogenic germs within the endodontic space
D. Make the debris removal useless within the canal
E. Produce a chemical action on the debris within the canal - BA. They loosen the debris within the canal, thus contributing to their mechanical removal
C. Decrease the number of pathogenic germs within the endodontic space
- AA. They loosen the debris within the canal, thus contributing to their mechanical removal
8Laser is a good tool for polymerization of diacryl resins due to the following advantages:
- AA. It is consistently issued
B. It is monochromatic
C. Unidirectional
E. It shows high penetrating level (5-6mm) - BA. It is consistently issued
B. It is monochromatic
C. Unidirectional
D. It shows low penetrating level
E. It shows high penetrating level (5-6mm)
- AA. It is consistently issued
9The benefits of photopolymerizable composite materials are
- AA. Quick setting
C. Color stability
D. Various degree of translucency - BA. Quick setting
B. Delayed setting
C. Color stability
D. Various degree of translucency
E. Limited range of color shades and translucency
- AA. Quick setting
10The property of self-curing acrylic resins:
- AA. No volume changes
B. High chromatic stability
C. Free of corrosion
D. Low chromatic stability
E. The monomer becomes highly toxic to the buccal mucosa over time. - BD. Low chromatic stability
- AA. No volume changes
11Wax property is as follows
- AA. Flow. Waxes show identical flowing values regardless of wax type and temperature B. Waxes have high thermal conductivity, facilitating uniform heating, thus avoiding deformations and shrinkage within the material
C. Waxes have low thermal conductivity, contributing to uneven heating, which results in shrinkage and deformations within the material
D. Waxes shrink as the temperature increases and expands upon cooling
E. The melting points of dental waxes differ from those of their components - BC. Waxes have low thermal conductivity, contributing to uneven heating, which results in shrinkage and deformations within the material
- AA. Flow. Waxes show identical flowing values regardless of wax type and temperature B. Waxes have high thermal conductivity, facilitating uniform heating, thus avoiding deformations and shrinkage within the material
12The property of sulphate-based packing masses is as follows
- AA. No porosity
B. Low strength
C. Volume changes
D. No volume changes E. Low resistance - BC. Volume changes
- AA. No porosity
13The phosphate-based packing masses should be melted and molded at the following temperature:
- AA. 60°C B. 120 ° C C.300 ° C D.700 ° C E. 250 ° C
- BD.700 ° C
14Which of the following plastic pastes, do not set into the canal
- AA. Zinc oxide eugenol paste (Endometazone)
B. Zinc oxyphosphate cement (hydrophosphate cement)
C. Long-lasting antiseptic paste (Iodoform)
D. Epoxide resin-based paste (Termasil) E. Calcium hydroxide paste (Endocal) - BC. Long-lasting antiseptic paste (Iodoform)
- AA. Zinc oxide eugenol paste (Endometazone)
15The requirements for root filling materials
- AA. To have a long-term setting time B. Non-carcinogenic
E. Not to irritate the periapical tissues - BA. To have a long-term setting time B. Non-carcinogenic
C. To be hardly removed
D. To change volume over time
E. Not to irritate the periapical tissues
- AA. To have a long-term setting time B. Non-carcinogenic
16Canal filling materials are required to
- AA. Be simple in preparation
B. Be radiolucent
C. Have a good adhesion to the root canal walls D. Close tightly the root canal
E. Be hardly removed from the canal - BA. Be simple in preparation
C. Have a good adhesion to the root canal walls
D. Close tightly the root canal
- AA. Be simple in preparation
17Root filling materials should meet the following requirements:
- AA. To be radiopaque
B. Not to irritate the periapical tissues C. Easy to remove
D. Allergy-free
E. Not to resorb over time - BA. To be radiopaque
B. Not to irritate the periapical tissues C. Easy to remove
D. Allergy-free
- AA. To be radiopaque
18The compact composites are indicated In
- AA. Modeling of dental bonding B. Teeth splinting
C. Filling of class I, II, V cavities D. Filling in a single layer
E. Fissure sealants - BA. Modeling of dental bonding B. Teeth splinting
C. Filling of class I, II, V cavities
- AA. Modeling of dental bonding B. Teeth splinting
19Name the characteristics of compact composites
- AA. Low resistance
B. High resistance to abrasion
C. Low polymerization shrinkage D. Very high resistance
E. 5% polymerization shrinkage - BB. High resistance to abrasion
C. Low polymerization shrinkage
D. Very high resistance
- AA. Low resistance
20Name the constituent fillers of liquid composites
- AA. Marcofiller
B. Microfiller
C. Marcohybrid D. Minifiller
E. Microhybrid - BB. Microfiller
E. Microhybrid
- AA. Marcofiller
21he polymerization shrinkage of compact composites is as following
- AA. 1.6-1.8%
B. 2%
C. 5%
D. 2.5-3% E. 0.5-1% - BA. 1.6-1.8%
- AA. 1.6-1.8%
22The polymerization shrinkage of LIQUID composites is as following
- AA. 1.6-1.8%
B. 2%
C. 5%
D. 2.5-3% E. 0.5-1% - BC. 5%
- AA. 1.6-1.8%
23Liquid composites are indicated in:
- AA. Fissure sealing
B. Filling of non-carious cervical cavities
C. Modeling of the dental bonding
D. Restoration of the marginal adaptation of a composite filling E. Therapeutic fillings - BA. Fissure sealing
B. Filling of non-carious cervical cavities
C. Modeling of the dental bonding
D. Restoration of the marginal adaptation of a composite filling
- AA. Fissure sealing
24Name the disadvantages of liquid composites
- AA. High polymerization shrinkage
B. Radiolucency
C. Limited range of color shades D. Low adhesion
E. Low polymerization shrinkage - BA. High polymerization shrinkage
- AA. High polymerization shrinkage
25What is the filling degree of liquid composites:
- AA. 60-70%
B. 30-50%
C. 55-60%
D. 65-70% E. 40-60% - BC. 55-60%
- AA. 60-70%
26The heat-curing composites are indicated in
- AA. Restoration of the lateral teeth
B. Inlay
C. Indirect veneers
D. Onlay
E. Retaining the intra-canal pins - BB. Inlay
C. Indirect veneers
D. Onlay
- AA. Restoration of the lateral teeth
27The disadvantages of the light-curing composite materials are as following :
- A. Poor adhesion
B. Short-term working
C. Dark discoloration of filling
D. Costly materials
E. The negative UV-rays impact on the eyes - BD. Costly materials
E. The negative UV-rays impact on the eyes
- A. Poor adhesion
28The benefits of light-curing composite materials are as following
- AA. Controlled setting B. Good color stability C. Long-term setting D. Fast setting
E. Wide range of color shade - BA. Controlled setting
B. Good color stability
D. Fast setting
E. Wide range of color shades
- AA. Controlled setting B. Good color stability C. Long-term setting D. Fast setting
29The polymerization initiator of the light-curing composites is:
- AA. Calcitonin
B. Camphorquinone
C. Ceresit
D. Thermoamine - BB. Camphorquinone
- AA. Calcitonin
30Name the disadvantages of self-curing composites:
- AA. It takes a long time to apply
B. Formation of micropores during mixing
C. Limited range of color shades
D. Poor adhesion
E. Dark discoloration of filling - BB. Formation of micropores during mixing
C. Limited range of color shades
D. Poor adhesion
E. Dark discoloration of filling
- AA. It takes a long time to apply
31Name the advantages of self-curing composites:
- AA. Wide range of color shades
B. Good adhesion
C. Overtime resistance
D. Uniform polymerization of the entire layer
E. Might be used in direct capping - BD. Uniform polymerization of the entire layer
- AA. Wide range of color shades
32The catalytic paste of the self-curing composite consists of:
- AA. Filler
B. Polymerization initiator
C. Monomer
D. Amine polymerization accelerator E. Orthophosphoric acid - BA. Filler
B. Polymerization initiator
C. Monomer
- AA. Filler
33.The basic self-curing composite paste consists of:
- AA. Filler
B. Polymerization initiator
C. Monomer
D. Amine polymerization accelerator E. Orthophosphoric acid - BA. Filler
C. Monomer
D. Amine polymerization accelerator
- AA. Filler
34The light-curing composite materials are produced as
- AB. Syringes
C. Capsule - BA. Paste - paste
B. Syringes
C. Capsule
D. Liquid- Powder E. Paste – liquid
- AB. Syringes
35Self-curing composite materials are produced as:
- AA. Paste - paste
B. Syringes
C. Capsule
D. Liquid -Powder E. Paste – liquid - BA. Paste - paste
D. Liquid -Powder
- AA. Paste - paste
36Characteristics of hybrid composite materials:
- AA. Increased polishing B. Fracture resistance C. Color stability
D. Radiolucency
E. Wide range of color shades - BA. Increased polishing
B. Fracture resistance
C. Color stability
E. Wide range of color shades
- AA. Increased polishing B. Fracture resistance C. Color stability
37The hybrid composite materials are:
- AA Self-curing
B. Light-curing
C. Heat-curing
D. Laser –poymerized E. Dual- curing - BB. Light-curing
E. Dual- curing
- AA Self-curing
38Microfilled composites are indicated in :
- AA. High aesthetic filling requirements
B. Filling of class II cavities
C. Filling of class III cavities
D. Restoration of non-carious teeth E. Filling of Class V cavities - BA. High aesthetic filling requirements
C. Filling of class III cavities
D. Restoration of non-carious teeth E. Filling of Class V cavities
- AA. High aesthetic filling requirements
39Name the disadvantages of microfilled composites
- AD. Low mechanical resistance
E. High coefficient of thermal expansion - BA. High abrasion
B. Are not color stable
C. Hard to polish
D. Low mechanical resistance
E. High coefficient of thermal expansion
- AD. Low mechanical resistance
40Name the benefits of microfilled composites:
- AA. Aesthetic appearance
B. Easy to polish
C. High strength
D. Long mechanical resistance
E. Low coefficient of thermal expansion - BA. Aesthetic appearance
B. Easy to polish
- AA. Aesthetic appearance
41he microfilled composites include inorganic fillers with the following particle size:
- AA. 0.4-0.8 km
- BA. 0.4-0.8 km
B. 0.3-0.6 km C. 0.4-1.0 mkm D. 0.5-0.9 mkm E. 0.2-0.7 mkm
42Macrophilled composites are indicated in
- AA. Aesthetic restoration of the front teeth B. Massive restoration
C. Aesthetic restoration of the lateral teeth D. Filling of Class VI cavities
E. Filling of decidual teeth - BB. Massive restoration
- AA. Aesthetic restoration of the front teeth B. Massive restoration
43Name the self-curing composites
- AA. Epacril
B. Concise C. Esthetic-x D. Evicrol
E. Latelux - BA. Epacril
B. Concise
D. Evicrol
E. Latelux
- AA. Epacril
44The macrophilled composites include inorganic fillers with the following particle size:
- AA. 4-60 mkm
B. 6-80 mkm
C. 2-30 mkm
D. 3-50 mkm E. 4-70 mkm - BC. 2-30 mkm
- AA. 4-60 mkm
45The microfilled composites include inorganic fillers with the following particle size
- AA. 0.4-0.8 km
- BA. 0.4-0.8 km
B. 0.3-0.6 km
C. 0.4-1.0 mkm
D. 0.5-0.9 mkm
E. 0.2-0.7 mkm
46Macrophilled composites are indicated in :
- AA. Aesthetic restoration of the front teeth
B. Massive restoration
C. Aesthetic restoration of the lateral teeth
D. Filling of Class VI cavities
E. Filling of decidual tee - BB. Massive restoration
- AA. Aesthetic restoration of the front teeth
47Name the self-curing composites:
- AA. Epacril
B. Concise C. Esthetic-x D. Evicrol
E. Latelux - BA. Epacril
B. Concise
D. Evicrol
E. Latelux
- AA. Epacril
48The macrophilled composites include inorganic fillers with the following particle size:
- AA. 4-60 mkm
B. 6-80 mkm
C. 2-30 mkm
D. 3-50 mkm
E. 4-70 mkm - BC. 2-30 mkm
- AA. 4-60 mkm
49According to their purpose, composites are used in:
- AA. Filling the masticatory teeth
- BA Filling the masticatory teeth
B. Filling the decidual teeth
C. Filling the front teeth D. Universal use
E. Specific use
50According to the organic matrix type, the composites are classified into:
- AA. Based on Bis-GMA
B. Based on DGMA
C. Based on IDMA
D. Based on UDMA
E. Based on TGDMA - BA. Based on Bis-GMA
B. Based on DGMA
D. Based on UDMA
E. Based on TGDMA
- AA. Based on Bis-GMA
51According to composite consistency, they are classified into:
- AA. Compact
B. Fluid
C.Thermal
D. Viscous
E. Mini-filler - BA. Compact
B. Fluid
D. Viscous
- AA. Compact
Información
- Descripción
- Test sobre biomaterial 2, creado por sumia ad el 21/06/2022.
- Autor
- sumia ad
- Idioma
- English
- Visitas
- 4
- Etiquetas
- Valoración
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