Posterior Superior Alveolar Block PSA Block上牙槽后神经阻滞 Tuberosity Injection上颌结节注射法) > Spread of analgesia麻醉范围 876678 (mesiobuccal root Pulp alveolar process Buccal gingiva(牙龈) periodontium(牙周膜) periosteum(骨膜 麻醉区城 2021/2212021/2/21 Posterior Superior Alveolar Block (PSA Block 上牙槽后神经阻滞, Tuberosity Injection上颌结节注射法) ➢ Spread of analgesia 麻醉范围 876 678 Pulp & alveolar process Buccal - gingiva(牙龈) - periodontium (牙周膜) - periosteum (骨膜) (mesiobuccal root)