Dental impression materials, also known as dental materials, initially exist in a liquid or semi-solid state upon mixing and placement in the mouth. Over a few minutes, these materials undergo a setting process, transforming into an elastic solid. During this time, they capture an accurate imprint of an individual’s dentition and the surrounding structures within the oral cavity. GuruMCQs.com provides all updated Dental Materials MCQs. MCQs of dental materials content are updated regularly, with the addition of new topics, more questions, and useful links. Repeated dental materials MCQs consist of impression materials like Amalgams, Dental Cements, Direct Filling Gold, Gypsum Products MCQs, Impression Materials, Metallurgy, Physical Properties, Dental Ceramics & Miscellaneous, Restorative Resins – and much more. These multiple-choice questions (MCQs) in dental materials serve as valuable resources for various purposes such as interview preparation, entrance exams, competitive assessments, and certifications for individuals at all levels of experience, including experienced professionals, newcomers, and students. Additionally, you can find MCQs on oral histology for further exploration.
101. Wash or corrective impression is done by______________?
A. Impression plaster
B. Impression paste
C. Alginate
D. Rubber base impression material
102. The plasticizers used in polyether impression material is_______________?
A. polyether polymer
B. Colloidal silica
C. Glycol ether
D. Di-vinyl poly (dimethyl siloxane)
103. In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the_____________?
A. Concentration of filler and plasticizer
B. Percentage composition by weight of water
C. Concentration of potassium sulphate
D. Temperature
104. Alginates are_____________?
A. Sol
B. Gel
C. Hydrocolloid
D. Colloid
105. Syneresis is associated with______________?
A. Hydrocolloids
B. Elastomers
C. Zinc oxide eugenol
D. Plaster of paris
106. The advantage of ZOE impression paste_______________?
A. Has dimensional stability
B. Does not adhere to tissues
C. Is easy manipulation
D. Does not require special trays
107. Rinsing of the impression is important to________________?
A. Remove excess impression material
B. Remove saliva
C. Hydrate the impression
D. Accelerate the setting
108. Which is best material for RPD impression_______________?
A. Impression plaster
B. Irreversible hydrocolloid
C. Reversible hydroollioid
D. None of the above
109. Which of the following is not affected by saliva ?
A. Impression plaster
B. Impression paste
C. Silicon impression material
D. None of the above
110. Retarder in Zinc oxide eugenol is______________?
A. CaCl2
B. Zinc acetate
C. Alcohol
D. Glycerine
Dental impression materials, also known as dental materials, initially exist in a liquid or semi-solid state upon mixing and placement in the mouth. Over a few minutes, these materials undergo a setting process, transforming into an elastic solid. During this time, they capture an accurate imprint of an individual’s dentition and the surrounding structures within the oral cavity. GuruMCQs.com provides all updated Dental Materials MCQs. MCQs of dental materials content are updated regularly, with the addition of new topics, more questions, and useful links. Repeated dental materials MCQs consist of impression materials like Amalgams, Dental Cements, Direct Filling Gold, Gypsum Products MCQs, Impression Materials, Metallurgy, Physical Properties, Dental Ceramics & Miscellaneous, Restorative Resins – and much more. These multiple-choice questions (MCQs) in dental materials serve as valuable resources for various purposes such as interview preparation, entrance exams, competitive assessments, and certifications for individuals at all levels of experience, including experienced professionals, newcomers, and students. Additionally, you can find MCQs on oral histology for further exploration.
**111. Thickness of luting cement is?**
A. 20-40μ
B. 10-20μ
C. 60-80μ
D. 1-2μ
**Answer: B. 10-20μ**
**112. The chief advantage of zinc phosphate cement is its?**
A. Good compressive strength
B. Film thickness
C. Lack of irritation
D. Low solubility
**Answer: A. Good compressive strength**
**113. Which of the following cements is most biocompatible with pulp?**
A. GIC
B. Copper cement
C. Zinc phosphate cement
D. Zinc oxide eugenol cement
**Answer: D. Zinc oxide eugenol cement**
**114. The major component of zinc phosphate cement is?**
A. Zinc oxide
B. Phosphoric acid
C. Zinc
D. None of the above
**Answer: A. Zinc oxide**
**115. Polycarboxylate cement is used for?**
A. Temporary restoration
B. Luting
C. Permanent restoration
D. Die material
**Answer: B. Luting**
**116. The dual cure cements should not be used with light transmitting prostheses thicker than?**
A. 1 mm
B. 1.5 mm
C. 2 mm
D. 2.5 mm
**Answer: B. 1.5 mm**
**117. Which of the following is most important in strength ZOE?**
A. Liquid powder ratio
B. Temperature of mixing stab
C. Speed of mixing
D. Addition of few drops of water
**Answer: A. Liquid powder ratio**
**118. The effect of zinc oxide-eugenol on the pulp?**
A. Is irritating
B. Encourages pulpal fibrosis
C. Is sedating
D. Has no effect
**Answer: D. Has no effect**
**119. Best marginal seal is provided by?**
A. Zinc phosphate
B. Zinc oxide eugenol
C. Gutta-percha
D. Resin
**Answer: D. Resin**
**120. Secondary caries is least likely seen with?**
A. Silicate cement
B. Zinc phosphate
C. Polycarboxylate
D. GIC
**Answer: D. GIC**
Dental impression materials, also known as dental materials, initially exist in a liquid or semi-solid state upon mixing and placement in the mouth. Over a few minutes, these materials undergo a setting process, transforming into an elastic solid. During this time, they capture an accurate imprint of an individual’s dentition and the surrounding structures within the oral cavity. GuruMCQs.com provides all updated Dental Materials MCQs. MCQs of dental materials content are updated regularly, with the addition of new topics, more questions, and useful links. Repeated dental materials MCQs consist of impression materials like Amalgams, Dental Cements, Direct Filling Gold, Gypsum Products MCQs, Impression Materials, Metallurgy, Physical Properties, Dental Ceramics & Miscellaneous, Restorative Resins – and much more. These multiple-choice questions (MCQs) in dental materials serve as valuable resources for various purposes such as interview preparation, entrance exams, competitive assessments, and certifications for individuals at all levels of experience, including experienced professionals, newcomers, and students. Additionally, you can find MCQs on oral histology for further exploration.
**121. Most preferable cement for temporary restoration?**
A. GIC
B. ZOE
C. Ca(OH)2
D. Zinc polycarboxylate cement
**Answer: A. GIC**
**122. Why GIC is the best restorative material in children?**
A. High strength
B. Good marginal integrity
C. It can bond enamel & dentin
D. It has less occlusal wear
**Answer: C. It can bond enamel & dentin**
**123. The setting of zinc phosphate is accelerated by?**
A. Adding a drop of water
B. Increasing mixing time
C. Cooling the slab
D. Adding a drop of oleic acid
**Answer: C. Cooling the slab**
**124. pH of which cement remains below 7 even after 1 month after insertion into the cavity?**
A. Glass Ionomer Cement
B. Zinc Phosphate
C. Resin cement
D. Silicate cement
**Answer: A. Glass Ionomer Cement**
**125. The most commonly used, most biocompatible, and adhesive cement is?**
A. Zinc phosphate
B. Zinc oxide eugenol
C. Calcium hydroxide
D. Glass ionomer
**Answer: D. Glass ionomer**
**126. Torsional force is?**
A. Compression
B. Tensile force
C. Shear
D. Transverse bending force
**Answer: C. Shear**
**127. All of the following is used as an accelerator in zinc oxide eugenol cement except?**
A. Acetic acid
B. Zinc acetate dihydrate
C. Calcium chloride
D. Bromoglycerine
**Answer: D. Bromoglycerine**
**128. The principal constituent of the set silicate cement matrix is?**
A. Hydrated Aluminium phosphate
B. Hydrated Aluminium Phosphate with calcium fluoride
C. Hydrate Aluminosilicate gel
D. Hydrated Aluminium phosphate crystal, CAF2 aluminosilicate gel
**Answer: D. Hydrated Aluminium phosphate crystal, CAF2 aluminosilicate gel**
**129. Age hardening is a process done at?**
A. Heating up to 200 – 450°C for 15 – 30 min and quenching in water
B. Heating at 700°C for 10 – 15 min and quenching in water
C. Heating at 700°C for 1 hour and quenching in water
D. Heating above 700°C for 30 min and quenching in water
**Answer: A. Heating up to 200 – 450°C for 15 – 30 min and quenching in water**
**130. Frozen slab technique is applicable to?**
A. Zinc phosphate cement
B. Glass Ionomer cement
C. Zinc oxide Eugenol cement
D. Resin cement
**Answer: A. Zinc phosphate cement**
Dental impression materials, also known as dental materials, initially exist in a liquid or semi-solid state upon mixing and placement in the mouth. Over a few minutes, these materials undergo a setting process, transforming into an elastic solid. During this time, they capture an accurate imprint of an individual’s dentition and the surrounding structures within the oral cavity. GuruMCQs.com provides all updated Dental Materials MCQs. MCQs of dental materials content are updated regularly, with the addition of new topics, more questions, and useful links. Repeated dental materials MCQs consist of impression materials like Amalgams, Dental Cements, Direct Filling Gold, Gypsum Products MCQs, Impression Materials, Metallurgy, Physical Properties, Dental Ceramics & Miscellaneous, Restorative Resins – and much more. These multiple-choice questions (MCQs) in dental materials serve as valuable resources for various purposes such as interview preparation, entrance exams, competitive assessments, and certifications for individuals at all levels of experience, including experienced professionals, newcomers, and students. Additionally, you can find MCQs on oral histology for further exploration.