What nerve blocks can we give for quadrant dentistry?

• A. PSA, ASA, MSA, Nasopalatine, & Greater Palatine
• B. ASA only
• C. PSA only
• D. Nasopalatine only

Answer: (A)

For a maxillary quadrant, you plan to interrupt multiple branches of the maxillary division to cover both the teeth and the overlying palate. The posterior superior alveolar (PSA) block targets the molars and their supporting structures in the posterior part of the quadrant. The middle superior alveolar (MSA) block, when present, covers the premolars and the mesiobuccal root of the first molar. The anterior superior alveolar (ASA) block anesthetizes the anterior teeth and their facial gingiva via the infraorbital nerve. To numb the palatal tissues, you add the nasopalatine block for the anterior palate (canine-to-canine region) and the greater palatine block for the posterior palate and palatal gingiva. Together, these blocks provide comprehensive anesthesia for procedures in a single maxillary quadrant, addressing both the teeth and the palatal tissues involved.