Regional anesthesia and pain medicine
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Reg Anesth Pain Med · Nov 2001
Multicenter Study Clinical TrialAnatomic considerations in relation to the maxillary nerve block.
To determine the length of the needle that should be used to reach the maxillary nerve after the lateral pterygoid plate has been contacted. ⋯ The needle should not be advanced by more than approximately 0.25 cm beyond the distance to the pterygoid plate while performing maxillary nerve block by the lateral extraoral approach.