WorksheetsENDO Restorative materials
Total questions: 41
Worksheet time: 10hrs 15mins
Name
Class
Date
1.
Which of the following characteristics should temporary restorative materials possess?
a)
a) Long setting time
b)
b) Difficult to remove
c)
c) Proper marginal adaptation
d)
d) Acidic reaction with surrounding tissues
2.
Temporary restorative materials should have a short setting time, making them easy and quick to apply.
a)
true
b)
False
3.
Fill in the blank question about temporary restorative materials: __________ is a temporary restorative material that is easily prepared and applied, and it can be neutral to the surrounding tissues.
a)
a) Zinc phosphate cement
b)
b) Resin-modified glass ionomer cement
c)
c) Zinc oxide-eugenol
d)
d) Water dentin (Oxydentin, Thymodentin)
4.
Which type of temporary restorative material is commonly used for provisional crowns and bridges due to its ease of removal and marginal adaptation?
a)
a) Water dentin (Oxydentin, Thymodentin)
b)
b) Zinc oxide-eugenol
c)
c) Self-setting materials
d)
d) Provisional cements
5.
emporary restorative materials should have a long setting time to allow for better adaptation to the tooth structure.
a)
true
b)
False
6.
What are the characteristics that bases should possess to isolate the pulp from thermal and chemical stimuli?
a)
a) High tensile strength and hardness
b)
b) Biocompatibility and odontotropic properties
c)
c) Low setting time and good marginal adaptation
d)
d) High elasticity and mechanical properties
7.
Which of the following is an example of an isolating material used to protect the pulp from thermal and chemical stimuli?
a)
a) Varnishes
b)
b) Liners
c)
c) Glass-ionomers
d)
d) Phosphate cements
8.
Which type of material is both an isolating and healing material, known for its non-hardening and biocompatible properties?
a)
a) Glass-ionomers
b)
b) Zinc oxide-eugenol
c)
c) Carboxylic cements
d)
d) Hardening calcium hydroxide cements
9.
What is the main component of the powder in phosphate cements?
a)
a) CaF2 Calcium fluoride
b)
b) MgO magnesium oxide
c)
c) SiO2 silicon dioxide
d)
d) ZnO zinc oxides
10.
Which type of cements is considered less toxic than phosphate cements?
a)
a) Glass-ionomers
b)
b) Varnishes
c)
c) Carboxylic cements
d)
d) Hardening calcium hydroxide cements
11.
What is the liquid component of phosphate cements?
a)
a) Ortho-phosphoric acid
b)
b) Water
c)
c) CaO
d)
d) SiO2
12.
Which dental material is used as a healing material and is known for its non-hardening properties?
a)
a) Glass-ionomers
b)
b) Bio-preparations
c)
c) Non-hardening calcium hydroxide cements
d)
d) Hardening calcium hydroxide cements
13.
What are the primary properties of bases required for proper adhesion and marginal adaptation?
a)
a) High tensile strength and hardness
b)
b) Biocompatibility and odontotropic properties
c)
c) Low setting time and good marginal adaptation
d)
d) High elasticity and mechanical properties
14.
Which material is commonly used as a liner to protect the pulp and promote dentin formation?
a)
a) Hardening calcium hydroxide cements
b)
b) Glass-ionomers
c)
c) Zinc oxide-eugenol
d)
d) Varnishes
15.
What is the main component of the liquid in carboxylic cements?
a)
a) Polyacrylic acid (CH2-CHCO2H)n
b)
b) Water
c)
c) Calcium Fluoride CaF2
d)
d) SnF2 , Tin(II) fluoride
16.
What is the basic version of glass-ionomers produced as?
a)
a) Single-component powder
b)
b) Two-component powder and liquid
c)
c) Self-curing liquid
d)
d) Light-cured paste
17.
What are cermet cements, a modified version of glass-ionomers, known for?
a)
a) Their single-component formulation
b)
b) The addition of metal particles to improve physico-mechanical properties
c)
c) Their light-curing capability
d)
d) Their ability to release fluoride ions
18.
Which type of glass-ionomers can be either light-cured or self-curing?
a)
a) Basic glass-ionomers
b)
b) Hybrid glass-ionomers
c)
c) Single-component glass-ionomers
d)
d) Cermet cements
19.
What is the source of fluoride ions in glass-ionomer materials?
a)
a) Anhydride acid
b)
b) Distilled water
c)
c) Barium-aluminium-fluoro-silicon glass
d)
d) Metal particles
20.
How does adhesion to the tooth surface occur with glass-ionomers?
a)
a) Through a chelate bond with hydroxyapatite
b)
b) By releasing fluoride ions
c)
c) Through light-curing
d)
d) By adding metal particles
21.
Why is it important to cover glass-ionomers with varnish during the setting process?
a)
a) To prevent the release of fluoride ions
b)
b) To improve physico-mechanical properties
c)
c) To avoid sensitivity to moisture
d)
d) To speed up the setting process
22.
What is a very important feature of glass-ionomers related to their ability to interact with enamel and dentine?
a)
a) Fluoride ion release
b)
b) Light-curing capability
c)
c) Sensitivity to moisture
d)
d) Adhesion through chelate bonding
23.
Which stage of the setting process requires covering glass-ionomers with varnish?
a)
a) Initial mixing
b)
b) Final preparation
c)
c) Addition of metal particles
d)
d) Fluoride ion release
24.
Liners on the basis of polymeric resins are similar in composition to which types of materials?
a)
a) Glass-ionomers and varnishes
b)
b) Composites and compomers
c)
c) Zinc oxide-eugenol and carboxylic cements
d)
d) Phosphate cements and liners with polyacid
25.
Which extra compounds can be found in some liners to enhance their properties?
a)
a) Fluoride ions and anhydride acid
b)
b) Polyacid, hydroxyapatite, calcium hydroxide or fluoride ions
c)
c) Barium-aluminium-fluoro-silicon glass and metal particles
d)
d) Magnesium oxide and zinc oxide
26.
Hardening Ca(OH)2 Calcium hydroxide materials are produced in two forms, either as two-component or single-component. What are the components in the two-component form?
a)
a) Powder + liquid
b)
b) Two pastes
c)
c) Single paste - self-setting
d)
d) Light-cured liquid
27.
Which type of Ca(OH)2 Calcium hydroxide materials is used in the treatment of deep caries with accidental pulp exposure or pulp injury (direct pulp capping)?
a)
a) Hardening Ca(OH)2 materials
b)
b) Non-hardening Ca(OH)2 materials
c)
c) Glass-ionomers
d)
d) Liners with polyacid
28.
What are the properties of non-hardening Ca(OH)2 materials that make them suitable for direct pulp capping?
a)
a) Acid pH neutralization and enzyme activation
b)
b) Fluoride ion release and adhesion to enamel
c)
c) Hydroxyapatite bonding and chelate bonding
d)
d) Light-curing and self-setting capability
29.
Which Ca(OH)2 material is produced in the form of a paste that can be directly applied?
a)
a) Ca(OH)2 powder
b)
b) Hardening Ca(OH)2 materials
c)
c) Biopulp (includes a non-woody fiber plant and a suspension of a microorganism)
30.
Liners on the basis of polymeric resins have a composition similar to glass-ionomers.
a)
false
b)
true
31.
What are non-hardening Ca(OH)2 materials used for?
a)
a) Restoration of missing teeth
b)
b) Treatment of deep caries with pulp exposure
c)
c) Teeth whitening
d)
d) Gum disease prevention
32.
Non-hardening Ca(OH)2 materials are capable of acid pH neutralization and enzyme activation.
a)
True
b)
false
33.
Which capability is NOT associated with non-hardening Ca(OH)2 materials?
a)
a) Acid pH neutralization
b)
b) Fluoride ion release
c)
c) Enzyme activation
d)
d) Activation of mineralization initiators
34.
What are the main applications of calcium silicate-based cements (CSC)?
a)
a) Teeth whitening and gum disease prevention
b)
b) Pulp capping, treatment of perforations, and external resorptions
c)
c) Restoring missing teeth
d)
d) Treatment of gingivitis
35.
What advantage does Biodentine have over Mineral Trioxide Aggregate (MTA)?
a)
a) Biodentine has odontoblastic and cementoblastic activity
b)
b) Biodentine requires a prolonged setting time
c)
c) Biodentine is less prone to discoloration and has a shorter setting time
d)
d) Biodentine contains resin modified calcium silicates
36.
What is the characteristic feature of TheraCal LC?
a)
a) It is used in pulp capping and treatment of perforations
b)
b) It is cured with light and has high mechanical strength
c)
c) It has odontoblastic and cementoblastic activity
d)
d) It is used in teeth whitening procedures
37.
What are the two main disadvantages associated with Mineral Trioxide Aggregate (MTA)?
a)
a) It has odontoblastic and cementoblastic activity.
b)
b) It requires a prolonged setting time and is prone to discoloration.
c)
c) It is used in pulp capping and treatment of perforations.
d)
d) It contains resin modified calcium silicates.
38.
What is the notable biological activity of Mineral Trioxide Aggregate (MTA)?
a)
a) Odontoblastic and cementoblastic activity
b)
b) Light-curing capability
c)
c) Fluoride ion release
d)
d) Acid pH neutralization
39.
What advantage does Biodentine have over Mineral Trioxide Aggregate (MTA)?
a)
a) Biodentine requires a prolonged setting time
b)
b) Biodentine is more prone to discoloration
c)
c) Biodentine has odontoblastic and cementoblastic activity
d)
d) Biodentine has a shorter setting time and is less prone to discoloration
40.
What is one of the essential properties of restorative materials related to their performance in the oral cavity?
a)
a) Hydrophobicity and disintegration in saliva
b)
b) Proper adhesion and marginal integrity
c)
c) Corrosion and degradation of the superficial layer
d)
d) Homogeneity and constant capacity
41.
Which effect should restorative materials NOT have on the oral tissues?
a)
a) Allergic effect
b)
b) Galvanic effect
c)
c) Chemotactic effect
d)
d) Odontoblastic effect
100 %
