Higher the mercury/alloy ratio in dental amalgam 1) More the gamma phase is formed 2) Less the matrix formed 3) More the matrix formed 4) All of the above
Conservative DentistryAnswer: 3
Which of the following is not true about lubricant for rubber dam placement? 1) Should have water-miscible vehicle 2) Vaseline is an ideal choice 3) Should be easy to remove 4) Should not interfere with bonding procedure
Conservative DentistryAnswer: 2
If the investment ring is heated in the burn out too quickly, which of the following will result 1) Release of PO 2) Back pressure porosity 3) No problems provided the oven temperature is kept below 1292 degree celcius 4) Cracking of investment resulting in finned castings
Conservative DentistryAnswer: 4
Preparation of class I cavities for dental amalgam, direct filling gold or gold inlays have in common 1) Occlusally diverging facial and lingual walls 2) Occlusally diverging mesial and distal walls 3) Occlusally diverging facial and lingual walls 4) Occlusally diverging mesial and distal walls
Conservative DentistryAnswer: 2
Proximal caries can be detected best with 1) Intraoral periapical radiographs 2) Bitewing radiographs 3) Occlusal radiographs 4) Orthopantomographs
Conservative DentistryAnswer: 2
In modified class III cavity restoration, retention is obtained mainly by 1) Acid etching 2) Retentive groove/slot 3) Retentive point 4) Retentive pin
Conservative DentistryAnswer: 1
Fracture tooth is best restored with 1) Pin retained amalgam 2) Cast gold 3) Both A & B 4) Direct gold
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
