263例患者固定修复后基牙情况5年临床观察

目的 探索固定义齿修复后基牙的发病规律.方法 随访观察263例行固定义齿修复的患者,修复5年来基牙的发病情况,分析患者年龄、修复体材料、修复时间与基牙发病的关系.结果 41岁以上年龄组患者修复后基牙发病明显高于40岁以下年龄组;基牙发病与修复体材料无关;修复后第1年基牙发病明显高于其后4年.结论 固定修复后有一定数量的基牙发生牙髓病和根尖周病,基牙发病与患者年龄及修复体戴用的时间有关,但与修复体材料无关.

Five Years Clinic Studies on Basic Teeth of 263 Patients with Fixed Prosthesis Suffered from Diseases

Objective To investigate and analyse causes and law of pulp, periapical and periodontal disease of base teeth occurred in five years after finishing restoration. Methods 263 patients with defect of dentition were restored by five sorts of fixed prosthesis including single crown and fixed bridge, 582 vital base teeth of fixed prosthesis were reexamined and observed for caries, periodontitis, gingival recession and leakage form by clinic examination. To analysis causes of base teeth of prosthesis in five years following repaired. Results Above 41-year old patients had higher obviously than under 40-year old group in incidence of base teeth disease during 5 years after repaired.No relationship between base teeth that suffer from diseases and sorts of restoration had been found. Number of base teeth suffer from disease much more in first year than next four years after repaired. Pulpitis or apicitis of base teeth caused by dental caries, periodontal disease, gingival recession and leakage between body of restoration and base teeth occurred following third year after fixed restorations had been finished. Conclusion The cause of pulpitis or apicitis of base teeth was difference in different time following repaired. Dental pulp injured during the restoration may be cause of pulpitis and apicitis of base teeth in above 41-year old patients. Dental caries, periodontitis became main disease of base teeth sickened in next second or third years after completed restoration.