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Anesthesia

Maxillary Injections

QuestionAnswer
ASA Anterior Superior Alveolar
MSA Middle Superior Alveolar
IO Infraorbital
PSA Posterior Superior Alveolar
GP Greater Palatine
NP Nasopalatine
What is the area anesthetized in the ASA? Field block; includes maxillary central, lateral, cuspid, periosteum, and facial soft tissue of same area (to mid-line)
What is the area anesthetized in the MSA? Field block; includes maxillary premolars and MB root of Max. first molar, periosteum and buccal soft tissue of same area. Absent in a large % of the population.
What is the area anesthetized in the IO? Max. central to MB root of 1st molar, periosteum, buccal soft tissue of same area, lower eyelid, lateral aspect of nose, upper lip
What is the area anesthetized in the PSA? 3rd, 2nd, 1st, Max. molars (except MB root of 1st perm. molar if MSA is present) periosteum, and buccal soft tissue of same area
What is the area anesthetized in the GP? No teeth. Hard palate and lingual tissue posterior to 1st premolar and medial to midline
What is the area anesthetized in the NP? No teeth. Anterior 1/3 of hard palate, lingual tissues from cuspid to cuspid.
What type of needle is used for the ASA? 25 or 27 short
What type of needle is used for the MSA? 25 OR 27 short
What type of needle is used for the IO? 25 or 27 long; 27 short for small pt.
What type of needle is used for the PSA? 25 or 27 Short
What type of needle is used for the GP? 27 or 30 short or extra short
What type of needle is used for the NP? 27 or 30 short or extra short
What are the landmarks for the ASA? Canine fossae, located between lateral and canine
What are the landmarks for the MSA? zygomatic process, Max. premolars
What are the landmarks for the IO? Infraorbital notch; infraorbital foramen
What are the landmarks for the PSA? Zygomatic eminence maxillary tuberosity, ala of nose, corner of mouth
What are the landmarks for the GP? Vertical and horizontal processes of maxilla and palatine bones, 2nd or 3rd molars apices
What are the landmarks for the NP? Max. centrals, incisive papilla
Created by: daisenmurray
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