Operative Dentistry MCQS Midterm Exam Questions
with Verified Answers
1. Which one of the following advantage of wet bonding is most desirable for good bond
strength?
a. No need of washing
b. No need of Drying
c. Good Penetration
d. Less chances of contamination
e. Prevents collapse of dentine
2. In RCT, over preparation of outer wall of the opposite curvature of the canal with inflexible
instrument will cause:
a. Perforation
b. Elbow Formation
c. Zipping
d. Crazing
e. Ledge Formation
3. Which one of the following is responsible for expansion during the dental amalgam setting
reaction?
a. Lower density of the product versus reactant phases
b. Impingement of Ag-Hg crystals in matrix during growth
c. Increased temperature of the mass due to exothermic heat
d. Dissolution of selective components out of the particles
e. Formation of by-product gases during the reaction
4. Which one of the following variables does not influence the amount of dimensional change
during setting of dental amalgams?
a. Alloy particle size or shape
b. Hg/alloy ratio
c. Trituration time
d. Condensation method
e. Burnishing technique
5. In patients showing generalized attrition, normal treatment prior to crown preparation is :
a. Desensitization of crown of tooth
b. Root Canal Treatment
c. Periodontal Surgery
d. Scaling
e. Surgical crown lengthening
, 6. Temporary crowns are made to last for short period of time to:
a. to prevent over eruption of prepared tooth
b. to protect prepared dentine
c. to maintain appearance
d. Improve masticatory process
e. Maintain Occlusion
7. What is the most common cause of failure of pulpotomy, which employs Calcium Hydroxide
in primary molars?
a. Pulp Fibrosis
b. Pulp Calcification
c. Ankylosis
d. Internal Resorption
e. Profuse Bleeding
8. Which one of the following mechanisms of failure is most common for high copper dental
amalgam?
a. Excessive tarnish
b. Bulk fracture
c. Intergranular corrosion of the occlusal surface
d. Enamel wall fracture from thermal expansion stresses
e. Marginal fracture
9. A stabilized horizontal root fracture with evidence of hyper-calcification of pulpal space
requires:
a. Endotherapy with gutta percha
b. Endotherapy with Calcium Hydroxide
c. Post retained Crown
d. No further Treatment
e. Surgical removal of apical Segment
10. All are radiographic characterstics of occlusal trauma, except
a. Furcation radiolucencies
b. Widening of Periodontal ligament space (irregular)
c. Vertical or angular bone loss
d. General Periodontal widening(Crestal Portion)
e. Fremitus on Mesial cone shift
11. In Aesthetic Dentistry, colour of tooth is
a. Hue
b. Chroma
c. Value
d. Translucency
e. Prismatic Effects
with Verified Answers
1. Which one of the following advantage of wet bonding is most desirable for good bond
strength?
a. No need of washing
b. No need of Drying
c. Good Penetration
d. Less chances of contamination
e. Prevents collapse of dentine
2. In RCT, over preparation of outer wall of the opposite curvature of the canal with inflexible
instrument will cause:
a. Perforation
b. Elbow Formation
c. Zipping
d. Crazing
e. Ledge Formation
3. Which one of the following is responsible for expansion during the dental amalgam setting
reaction?
a. Lower density of the product versus reactant phases
b. Impingement of Ag-Hg crystals in matrix during growth
c. Increased temperature of the mass due to exothermic heat
d. Dissolution of selective components out of the particles
e. Formation of by-product gases during the reaction
4. Which one of the following variables does not influence the amount of dimensional change
during setting of dental amalgams?
a. Alloy particle size or shape
b. Hg/alloy ratio
c. Trituration time
d. Condensation method
e. Burnishing technique
5. In patients showing generalized attrition, normal treatment prior to crown preparation is :
a. Desensitization of crown of tooth
b. Root Canal Treatment
c. Periodontal Surgery
d. Scaling
e. Surgical crown lengthening
, 6. Temporary crowns are made to last for short period of time to:
a. to prevent over eruption of prepared tooth
b. to protect prepared dentine
c. to maintain appearance
d. Improve masticatory process
e. Maintain Occlusion
7. What is the most common cause of failure of pulpotomy, which employs Calcium Hydroxide
in primary molars?
a. Pulp Fibrosis
b. Pulp Calcification
c. Ankylosis
d. Internal Resorption
e. Profuse Bleeding
8. Which one of the following mechanisms of failure is most common for high copper dental
amalgam?
a. Excessive tarnish
b. Bulk fracture
c. Intergranular corrosion of the occlusal surface
d. Enamel wall fracture from thermal expansion stresses
e. Marginal fracture
9. A stabilized horizontal root fracture with evidence of hyper-calcification of pulpal space
requires:
a. Endotherapy with gutta percha
b. Endotherapy with Calcium Hydroxide
c. Post retained Crown
d. No further Treatment
e. Surgical removal of apical Segment
10. All are radiographic characterstics of occlusal trauma, except
a. Furcation radiolucencies
b. Widening of Periodontal ligament space (irregular)
c. Vertical or angular bone loss
d. General Periodontal widening(Crestal Portion)
e. Fremitus on Mesial cone shift
11. In Aesthetic Dentistry, colour of tooth is
a. Hue
b. Chroma
c. Value
d. Translucency
e. Prismatic Effects
