When using forceps for extraction of a maxillary first molar, which of the following statements is/are true?
1. Palatal bone is thinner than buccal bone.
2. Buccal bone is easier to expand.
3. Forcep movement should be principally in the palatal direction.
4. Forcep movement should be principally in the buccal direction.
(2) and (4)
(1) (2) (3)
(1) and (3)
(4) only
All of the above.
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