This high-yield revision note on Maxillary Nerve Blocks: PSA, Infraorbital & Greater Palatine covers everything examiners typically test under Local Anesthesia — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Block | Landmark/Technique | Area Anesthetized |
|---|---|---|
| Posterior superior alveolar (PSA) | Height of mucobuccal fold above maxillary 2nd molar, needle angled ~45° upward/inward/backward | Maxillary molars (variable for mesiobuccal root of 1st molar), buccal gingiva of molars |
| Infraorbital (anesthetizes ASA+MSA) | Infraorbital foramen - located below the infraorbital notch, roughly in line with the pupil/2nd premolar | Lower eyelid, lateral nose, upper lip, maxillary anterior teeth and premolars |
| Greater palatine | Greater palatine foramen - at the junction of hard and soft palate, distal to 2nd/3rd molar | Posterior hard palate mucosa (unilateral) |
| Nasopalatine | Incisive papilla, just lateral to the midline | Anterior hard palate mucosa (canine to canine) |
| Maxillary (V2) nerve block | High-tuberosity approach or greater palatine canal approach | Entire hemimaxilla in one injection |
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