nasopalatine, AMSA, P-ASA, and maxillary nerve block

what is the purpose of the nasopalatine nerve block?

provides anesthesia top the anterior hard palate and its overlying soft tissues

it is used when procedures involve the palatal tissues from canine to canine

which nerve is being anesthetized during a nasopalatine block?

the nasopalatine nerve

what areas are anesthetized by the nasopalatine block?

anterior hard palate

palatal soft tissues primarily

extends from right first premolar to left first premolar

covers the palate canine to canine

what are the two approaches to the nasopalatine block?

1. single-puncture technique: one penetration beside the incisive papilla

2. three-puncture technique: less traumatic when performed correctly

when is a nasopalatine block indicated?

use when anesthesia is needed for anterior palatal surgery, SRP involving anterior palatal tissues, palatal flap procedures, and restorative procedures involving anterior palatal tissue

a pt needs periodontal surgery on the palatal tissues behind teeth #7-1-. which injection is indicated

nasopalatine nerve block

what is unique about the AMSA injection?

unlike most palatal injections, the AMSA provides both pulpal anesthesia and palatal soft tissues anesthesia

what teeth are anesthetized by the AMSA block

premolars, canine, and incisors

may also anesthetize the MB root of first molar

when is the AMSA block useful

when multiple maxillary anterior teeth and premolars require treatment while minimizing the number of injections

what is unique about the P-ASA injection?

The P-ASA is another palatal injections provides pulpal anesthesia and palatal soft tissues anesthesia

what teeth are anesthetized by the P-ASA block?

typically the maxillary central incisors, lateral incisors, and canines

often on both sides with one injection

how does the P-ASA differ from the ASA block?

ASA: buccal approach, usually unilateral, buccal tissues

P-ASA: palatal approach, often bilateral, palatal tissues + pulps

what is the purpose of the maxillary nerve block?

to anesthetize the entire maxillary division (V2) on one side

it provides anesthesia to nearly the entire maxillary quadrant with one injection

what areas are anesthetized by the maxillary nerve block?

all maxillary teeh on one side, buccal tissues, palatal tissues, bone, periodontium, portions of the midface

(essentially everything supplied by V2)

when is a maxillary nerve block indicated?

entire mx quadrant requires anesthesia

extensive oral surgery

multiple injections would otherwise be necessary

whwy isn’t the maxillary nerve block commonly used for routine dentistry?

bc it’s more technically difficult, more invasive, and usually unnecessary for routine restorative or hygiene procedures