【摘要】 目的研究老年人群牙齿慢性损伤性改变———楔状缺损和磨损的发生情况,以及二者的关系。方法采用Smith和Kmight牙齿磨损指数TWI分度方法,对320名老年人进行口腔检查。结果该组人群楔状缺损患病率为92·81%,磨损发生率为100%。发生率和病损程度均与年龄和牙位有关,磨损程度重的患者楔状缺损程度也重。结论楔状缺损与磨损是老年人常见的牙病,两者之间发生因素有相同之处,但程度加重的因素不一致。更多还原

【Abstract】 Objective To investigate the incidence of the wedge-shaped defects and abrasion and their correlation in elderly. Methods 320 elderly were examined and adopt Smith and Kmight dental wear index TWI grading method. Results The prevalence of wedge-shaped defects was 92.81% and the abrasion was 100.00% . Both the occurrence rate and abrasive degree were all significantly related with the age and the location of tooth. Patients with severe abrasion had severe wadge-shaped defects as well. Conclusion The wedge-shaped defects and abrasion are common dental diseases in elderly. There would be some common factors in causing both lesions, but the factors promoting aggravation degree are different.更多还原