Which injection is not typically required for SRP on maxillary teeth 2 through 4?

Which injection is not typically required for SRP on maxillary teeth 2 through 4?

• A. PSA
• B. MSA
• C. GP
• D. ASA

Answer: (D)

For SRP on maxillary posterior teeth, you aim to numb the region supplied by the posterior branches of the maxillary nerve. The posterior superior alveolar block covers the molars, and the middle superior alveolar block covers the premolars (and the MB root of the first molar in some patients). The greater palatine block is used to anesthetize the palatal tissue behind the canines, which may be helpful if you need palatal access or comfort during instrumentation. The anterior superior alveolar block, however, targets the anterior maxilla—the incisors and canines and their facial gingiva—which is not needed for scaling and root planing of teeth numbered 2 through 4. Therefore, the anterior superior alveolar injection is not typically required for SRP in that posterior maxillary region.

For SRP on maxillary posterior teeth, you aim to numb the region supplied by the posterior branches of the maxillary nerve. The posterior superior alveolar block covers the molars, and the middle superior alveolar block covers the premolars (and the MB root of the first molar in some patients). The greater palatine block is used to anesthetize the palatal tissue behind the canines, which may be helpful if you need palatal access or comfort during instrumentation. The anterior superior alveolar block, however, targets the anterior maxilla—the incisors and canines and their facial gingiva—which is not needed for scaling and root planing of teeth numbered 2 through 4. Therefore, the anterior superior alveolar injection is not typically required for SRP in that posterior maxillary region.