Oral Surgery · single question
During molar extraction, which of the following is INCORRECT?
Show answer and explanation
Correct answer: D. The beaks should be placed in the crown
Option D (beaks placed in the crown only) is INCORRECT — this is the answer. The forceps beaks should be placed as far apically as possible onto the root structure, NOT limited to the crown level. Crown-level placement → high risk of crown fracture, loss of grip.
Correct extraction principles:
• A (apical as possible) ✓: apply beaks as far subgingivally/apically as possible for maximum lever arm and control.
• B (long axis) ✓: beaks must be aligned parallel to the long axis of the tooth for proper force direction.
• C (lingual first) ✓: for lower molars, position the lingual beak first (anatomy is more accessible), then adjust the buccal beak. For upper teeth, palatal beak first.
• Extraction sequence: expand → luxate (PDL disruption) → deliver.
Correct extraction principles:
• A (apical as possible) ✓: apply beaks as far subgingivally/apically as possible for maximum lever arm and control.
• B (long axis) ✓: beaks must be aligned parallel to the long axis of the tooth for proper force direction.
• C (lingual first) ✓: for lower molars, position the lingual beak first (anatomy is more accessible), then adjust the buccal beak. For upper teeth, palatal beak first.
• Extraction sequence: expand → luxate (PDL disruption) → deliver.