Zunaira salehabout 2 hours ago

Posterior superior alveolar nerve

Site of deposition of local anesthetic for anesthetizing the posterior superior alveolar nerve. Note how the surface of the maxillary bone runs medially as it begins to form the posterior maxillary wall. Thus the barrel of the syringe must be taken laterally while penetrating the tissue to help keep the needle tip close to the surface of the bone.