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
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
Pulp horn most likely to be exposed in class II amalgam preparation in upper and lower first molar respectively 1. Mesiolingual and mediobuccal 2. Mediolingual and distolingual 3. Distobuccal and distolingual 4. Distolingual and distobuccal
Conservative DentistryAnswer: 1
Dental gold compared to type IV is stronger due to 1) Heat treatment 2) Grain elongation 3) Work hardening 4) All of the above
Conservative DentistryAnswer: 3
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
Silicate cement is indicated in 1) Mouth breathers 2) Patients with high caries index 3) Restoration of posterior teeth 4) None of the above
Conservative DentistryAnswer: 2
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
Friction locked pins are usually retained by 1) Threads on pin 2) Resiliency of dentin 3) Luting cement 4) Channel depth
