口腔颌面外科杂志Issue(1)：47-50,4.DOI:10.3969/j.issn.1005-4979.2015.01.009
下颌第三磨牙萌出状态与第二磨牙远中邻面龋坏的相关性研究
The Correlation between the Eruption Status of the Mandibular Third Molar and the Distal Caries in the Mandibular Second Molar
摘要
Abstract
Objective: To analyze the correlation between the eruption status of the mandibular third molar and the distal caries in the mandibular second molar. Methods: 204 patients who had eruption problems with their third molars were involved in this study. CBCT images were used to analyze the distal caries in the mandibular second molar, location of the third molars (Pell and Gregory classification), the impacted angulation of the third molar, and the distance of the cement-enamel junction (CEJ) between the second molar and third molar. Results: The prevalence of distal caries in the mandibular second molar was 78.4% when the third molar existed, and there was no difference between male and female patients (P=0.165). No significant difference was demonstrated among the Pell and Gregory classification groups ( P=0.646). The distal caries in the mandibular second molar were most prevalent where the impacted third molar situated at a mesial angle of 40~80° (P<0.001). When the distance of the CEJ between the second molar and third molar was 6~9 mm, the distal caries in the mandibular second molar was apt to occur (P<0.001). Conclusion:The distal caries in the mandibular second molar was closely related to the impacted angulation (40~80°), and the distance of the CEJ between the second molar and the third molar (6~9 mm), which kind of impacted third molar should be extracted as early as possible.关键词
下颌第三磨牙/下颌第二磨牙/远中邻面龋/锥形束CTKey words
mandibular third molar/mandibular second molar/distal caries/cone beam CT分类
医药卫生引用本文复制引用
黄成,蒋备战,康非吾..下颌第三磨牙萌出状态与第二磨牙远中邻面龋坏的相关性研究[J].口腔颌面外科杂志,2015,(1):47-50,4.基金项目
上海市科委医学引导项目(124119a7400)；上海市卫生局面上项目(20114117) （124119a7400）
