The method of choice to remove a distoocclusal onlay from a maxillary premolar 1) To use a substance that dissolves the cementing medium 2) Cutting the onlay with a round bur 3) Cutting at the isthumus region to remove it in two pieces 4) Use mallet and hammer to remove in one piece
Conservative DentistryAnswer: 3
Extension of facial and lingual walls in class II preparation is determined by 1) Extension of carious lesion gingivally 2) Position of the adjacent tooth contacts 3) Line angles of the tooth to be restored 4) All of the above
Conservative DentistryAnswer: 2
The cavosurface angle in conventional cavity preparation on root surfaces 1) Butt type 2) Bevelled at acute angles 3) Bevelled at obtuse angles 4) Rounded
Conservative DentistryAnswer: 1
Which is the material of choice to be given in class V cavities 1) Silicate cement 2) Polycarboxylate cement 3) Glass ionomer cement 4) Unfilled resin
Conservative DentistryAnswer: 3
A patient has his lower premolar restored with amalgam. Deep retentive undercuts where placed during the cavity preparation. Patient returns with definite pain after 15 days. The reason may be 1) Undetected pulp exposure 2) Delayed expansion of the mercury 3) Microleakage affecting the pulp 4) Galvanic currents
Conservative DentistryAnswer: 1
Water quenching a gold alloy casting is done immediately after the dull redness of the button disappears, to 1) Increase the degree of ductility of the casting 2) Decrease corrosion 3) Facilitate the easy removal of the casting from its mould 4) To achieve a desirable surface on the casting
Conservative DentistryAnswer: 3
In which type of lesion "eburnation" of the dentin is seen? 1) Acute caries 2) Chronic caries 3) Arrested caries 4) Root caries
Conservative DentistryAnswer: 3
High speed includes the rpm between 1) 20000-50000 2) 50000-100000 3) 100000-200000 4) Above 200000
