Oderinu Olabisi H, Adeyemo Wasiu L, Adeyemi Michael O, Nwathor Olusgeun, Adeyemi Moshood F
Lecturer, Department of Restorative Dentistry, Faculty of Dental Sciences, College of Medicine, University of Lagos, Lagos, Nigeria.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2012 Sep 12. doi: 10.1016/j.oooo.2012.03.039.
This study compares the incidence of cervical caries in the mandibular second molar associated with impacted third molar with that of fully erupted third molar. STUDY DESIGN: The participants consisted of subjects with second molar adjacent to an impacted third molar (study group), and subject with second molar adjacent to a fully erupted third molar (control group). Incidence of cervical caries on the second molar and other variables were recorded and analyzed for both groups. RESULTS: The incidence of distal cervical caries in the study group was 15.7% and no case of distal cervical caries was seen in the control (P = .000). DMF score in study group was significantly lower than in control (P = .000). The incidence of distal cervical caries increased with age of subjects and DMF scores (P ≤ .05). CONCLUSIONS: Distal cervical caries in second molars is a phenomenon limited only to impacted mandibular third molars.
本研究比较与阻生第三磨牙相关的下颌第二磨牙颈部龋的发生率与完全萌出第三磨牙相关的下颌第二磨牙颈部龋的发生率。
参与者包括第二磨牙毗邻阻生第三磨牙的受试者（研究组）以及第二磨牙毗邻完全萌出第三磨牙的受试者（对照组）。记录并分析两组第二磨牙颈部龋的发生率及其他变量。
研究组远中颈部龋的发生率为15.7%，对照组未发现远中颈部龋病例（P = .000）。研究组的龋失补（DMF）评分显著低于对照组（P = .000）。远中颈部龋的发生率随受试者年龄和DMF评分增加（P≤.05）。
第二磨牙远中颈部龋是一种仅局限于下颌阻生第三磨牙的现象。
