CBCT对不同年龄组间下颌第三磨牙拔除风险的评估

发布时间：2018-11-19 13:13

【摘要】：目的:运用锥形束CT研究年龄因素对拔除下颌第三磨牙的影响,评价早期拔除下颌第三磨牙的风险性。方法:筛选2015年6~12月在我院就诊患者中符合纳入标准的锥形束CT图像,共选取150颗下颌第三磨牙,其中16~18岁组47颗牙齿,19~24岁组60颗牙齿,24岁以上43颗牙齿,测得3个年龄组中患者的下颌骨体高(a)、下颌骨体剩余高度(b)与下颌骨体高(a)的比值、牙齿至下颌神经管最短距离数据,并分析不同年龄组之间的差异性。结果:下颌骨体高3个年龄组间差异无统计学意义。3组间b/a比值以24岁以上组最大,其次19~24岁组,各组间两两比较均有统计学意义。在牙齿至下颌神经管最短距离方面,19~24岁组和24岁以上组均比16~18岁组大,有统计学意义;而19~24岁组和24岁以上组间无统计学意义。但是,3个年龄组间牙齿与下颌神经管紧密接触比率无统计学差异。结论:3个年龄组中19~24岁组拔除下颌第三磨牙可能相对最合适、风险最小。
[Abstract]:Objective: to study the influence of age factors on the extraction of mandibular third molar by conical bundle CT, and to evaluate the risk of early extraction of mandibular third molar. Methods: a total of 150 mandibular third molars were selected from CT images of conical tracts in our hospital from June to December 2015. A total of 150 mandibular third molars were selected, including 47 teeth in 1618 years old group, 60 teeth in 1924 years old group and 43 teeth over 24 years old. The ratio of mandibular body height (a),) to mandibular body height (b) to mandibular body height (a) and the shortest distance from teeth to mandibular nerve canal were measured in three age groups, and the differences among different age groups were analyzed. Results: there was no significant difference in the body height of mandible among the three age groups. The ratio of b / a was the largest in the group over 24 years old, followed by the group of 1924 years old. The shortest distance from the teeth to the mandibular canal was larger in 1924 years group and more than 24 years old group than that in 16 and 18 years old group, but there was no statistical significance between 1924 years old group and over 24 years old group. However, there was no significant difference in the ratio of close contact between the teeth and the mandibular canal among the three age groups. Conclusion: the third mandibular molar extraction in 19 ~ 24 years old group may be the most appropriate and the lowest risk.
【作者单位】：南京市口腔医院·南京大学医学院附属口腔医院口腔颌面医学影像科;南京市口腔医院·南京大学医学院附属口腔医院口腔颌面外科;
【基金】：江苏省自然科学基金面上项目(编号:BK20150089,BK20141083) 江苏省南京市医学科技发展项目(编号:ZKX14049,YKK15116)
【分类号】：R782.11

【相似文献】