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下颌第四磨牙临床罕见,远比上颌第四磨牙发生为少,国内报道稀有,作者近年来在门诊中偶遇3例,特予介绍。例1:杨××,女,28岁,教师。因右下后牙冷热刺激痛来院门诊。检查除见7远中颈部大洞,洞损已扩及龈下,探穿髓,诊断为7慢性牙髓炎外。于8远中见一低位,颊向阻生第四磨牙。将9完整拔除,其冠、根均与8类似,但牙体较8为小。诊断:右下第
The fourth mandibular molars clinical rare, far less than the maxillary fourth molars, rare in the country, the author in recent years in the clinic in three cases, especially for the introduction. Example 1: Yang × ×, female, 28 years old, teacher. Hot and cold due to lower right posterior teeth to stimulate hospital pain. In addition to see the examination of seven large holes in the neck, hole loss has been extended and subgingival, probing through the pulp, diagnosed as 7 chronic pulpitis. See a low in the far 8, impinging on the fourth molars. 9 complete removal, the crown, root and 8 are similar, but the tooth is smaller than 8. Diagnosis: lower right