Which of the following is not true about hand instruments used in operative dentistry? 1) They are generally made of stainless steel 2) Nickel-cobalt-chromium is never used in its fabrication 3) Both A and B 4) None of the above
Conservative DentistryAnswer: 2
For operative convenience, the rubber dam should include 1) At least one tooth posterior to that being operated on and to some position beyond the midline into the adjacent quadrant 2) Only the tooth to be operated upon 3) All the teeth 4) None of the above
Conservative DentistryAnswer: 1
Pins used with amalgam restorations mainly 1) Increase retention and resistance 2) Decrease retention and resistance 3) Increase retention but decrease resistance 4) Decrease retention but increase resistance
Conservative DentistryAnswer: 3
The role of itaconic acid copolymer in glass ionomer cement 1) Reduces the viscosity of the liquid and inhibits gelation 2) Increases the viscosity of the liquid and accelerates gelation 3) Increases cohesion 4) To provide radiolucency
Conservative DentistryAnswer: 1
The thickness of the band material used for class II restoration is 1) 0.002 inch 2) 0.02 inch 3) 0.002 mm 4) 0.02 mm
Conservative DentistryAnswer: 1
Which factor most affects the adaptation of the gold foil to the cavity walls 1) Size of the condenser 2) Direction of the force 3) Shape of the condenser 4) Force applied
Conservative DentistryAnswer: 2
In a tooth in which the pulp has been removed, the pulpal wall becomes the 1) Apical wall 2) Axial wall 3) Gingival wall 4) Subpulpal wall
Conservative DentistryAnswer: 2
In class III composite preparation, retention points should be placed 1) In the axial wall 2) Entirely in dentin 3) At the dentinoenamel junction 4) At the expense of facial and lingual wall
