上頜磨牙区的麻醉,临床上常用的方法是通过上頜后结节和腭大孔的麻醉来完成,即麻醉上齿槽后神经和腭前神经。在拔除上頜第一磨牙时,还须在其近中頰侧根部作浸润麻醉以麻醉上齿槽中神经,这样就必须注射2～3针才能进行拔牙手术。而腭大孔的麻醉,常使病人在注射时有胀痛感,注射后又易发生恶心,甚至呕吐等副作用。 Maxillary molar area of ​​anesthesia, clinically common method is through the maxillary posterior nodules and large orifice anesthesia to complete, that is, anesthesia on the posterior posterior groove of the olfactory nerve and the palate. In the removal of the maxillary first molars, but also in its near the buccal root infiltration anesthesia to anesthesia in the alveolar nerve, so you must inject 2 or 3 to extract the tooth surgery. The anesthesia of the foramen magnum, often when patients have pain in the injection, injection and prone to nausea, vomiting and other side effects.