患者,男性,56岁,干部,1992—02—25因左下牙剧痛来我院口腔科就诊。检查:全口牙齿口腔卫生一般,除残根外,余牙牙体均无龋坏,上牙石(++),以下前牙重,叩(±)、龈充血(+)、水肿(+)、无波动感,叩(±)、冷热刺激痛(+++)。诊断逆行性急性浆液性牙髓炎.2%盐酸水利多卡因局麻下行下齿槽神经阻滞麻醉后开髓治疗.处置过程中患者无任何不适。4h Patient, male, 56 years old, cadre, 1992-02-25 due to left lower extremity pain to our hospital stomatology treatment. Examination: All oral teeth oral hygiene in general, in addition to the residual root, the remaining teeth no caries, calculus (++), the following anterior teeth weight, percussion (±), gingival congestion (+), edema No fluctuation, knock (±), hot and cold pain (+++). Diagnosis of retrograde acute pulpitis pulp.2% hydrochloric acid lidocaine under local anesthesia under the alveolar nerve block anesthesia after open pulp treatment .During the treatment of patients without any discomfort. 4h