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The AMSA nerve block: Pair with the PSA nerve block for hemimaxillary anesthesia - RDH

By Laura Webb. The anterior middle superior alveolar (AMSA) nerve block was discovered by Friedman and Hochman during the development of a computer-controlled local anesthetic delivery (CCLAD) device in 1997.1,2 The AMSA block has been ...

Anesthesia during perio: Maxillary injections useful for adult nonsurgical periodontal therapy - RDH

Special circumstances: Approximately 28% of the time the mesiobuccal root of the first permanent molar is not anesthetized during the PSA block.2,5 This is easily remedied by providing the middle superior alveolar nerve block (MSA block) discussed below.

Local anesthesia options during dental hygiene care - RDH

The target area is the posterior superior alveolar nerve as it enters the maxilla through the posterior superior alveolar foramina on the maxilla's infratemporal surface, which is at the height of the mucobuccal fold at the apex of the maxillary second ...

The middle superior alveolar nerve is a nerve that drops from the infraorbital portion of the maxillary nerve to supply the sinus mucosa, the roots of the maxillary premolars, and the mesiobuccal root of the first maxillary molar. It is not always present; and in the majority of cases it is non existent with the posterior superior alveolar nerve innervating the premolars and molars alone.

Middle superior alveolar nerve
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Distribution of the maxillary and mandibular nerves, and the submaxillary ganglion.
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Details
Identifiers
Latin ramus alveolaris superior medius nervi maxillaris
TA A14.2.01.051
FMA 53932
Anatomical terms of neuroanatomy

The middle superior alveolar nerve is a nerve that drops from the infraorbital portion of the maxillary nerve to supply the sinus mucosa, the roots of the maxillary premolars, and the mesiobuccal root of the first maxillary molar. It is not always present; and in the majority of cases it is non existent with the posterior superior alveolar nerve innervating the premolars and molars alone.

MSA (middle superior alveolar) nerve block

Dental student.

Middle Superior Alveolar Nerve Block

Anterior Middle Superior Alveolar Nerve Block

Anterior Middle Superior Alveolar Nerve Block

MSA injection

Maxillary injections 2 (ASA, MSA, PSA)