Where is the proper needle landmark for the AMSA injection?

The injection site for the AMSA is at a point which bisects the first and second
pre-molars and is midway between the free gingival margin and mid-palatine
suture. This landmark may vary somewhat depending upon the anatomy of the
palatal vault. A more appropriate description may be between the pre-molars
and at the junction of the horizontal and vertical component of the pa late. This
injection can performed with minimal discomfort when performed properly.

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