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目的:探讨下颌第三磨牙拔除导致下唇和舌麻木的有关因素。方法:按照三种分类标准进行分组。第一种分组:以不同年龄段分成两组。第二种分组:以下颌第三磨牙根尖与下颌神经管的关系分成三组。第三种分组:以不同拔牙方法分为三组。结果:1.下颌第三磨牙拔除后引起下唇麻木和舌麻木与年龄无明显关系。2.460例下颌第三磨牙拔除术后出现下唇麻木31例(占6.74%),其中第二组和第三组占26例(占5.65%),第一组和第二组分别与第三组相比具有统计学意义(P<0.05);出现舌神经损伤17例(占3.70%),其中第二组和第三组占14例(占3.04%),第一组和第二组分别与第三组相比具有统计学意义(P<0.05)。3.口腔全景片显示的66例下颌第三磨牙根尖与下颌神经管重叠中,CBCT显示根尖多位于下颌神经管舌侧,而跨于下颌神经管最少见。4.拔牙方法越复杂,引起下唇和舌麻木的几率就越大。结论:本组病例的方法评估对拟定合适的治疗方案和安全指导拔牙以降低下唇和舌麻木具有重要的临床意义。
Objective: To investigate the factors that cause the lower lip and tongue to numb in the removal of mandibular third molar. Methods: According to three classification criteria grouping. The first group: divided into two groups of different age groups. The second group: the mandibular third molars apical and mandibular neural tube relationship divided into three groups. The third group: different methods of extraction is divided into three groups. Results: 1. Mandibular third molar removal caused by lower lip numbness and tongue numbness and age no significant relationship. There were 31 cases (6.74%) of lower labial numbness in 2.460 cases of mandibular third molar removal, of which 26 cases (5.65%) in the second group and the third group, the first group and the second group were associated with the third group (P <0.05). There were 17 cases (3.70%) of lingual nerve injury, of which 14 cases (3.04%) in the second group and the third group, the first group and the second group were The third group was statistically significant (P <0.05). 3. Crosstalk shows 66 cases of mandibular third molars apical and mandibular neural tube overlap, CBCT shows more apical nerve root canal in the lingual, and across the mandibular canal is the most common. 4. The more complex the method of tooth extraction, the greater the chances of numbing the lower lip and tongue. CONCLUSIONS: The methodological evaluation of this group of patients has important clinical implications for the development of appropriate treatment options and for safe guidance on tooth extraction to reduce numbness in the lower lip and tongue.