摘要
目的:通过对活髓牙牙根纵裂致病诱因的多因素相关分析,进一步探讨活髓牙根裂的发病机制。方法:收集门诊牙根纵裂患者277例,患牙309颗,通过问卷调查可能的不良习惯,并检查患者牙体、牙周、面形态、磨耗程度、牙关系和X线表现以及相对应的对侧同名牙的相关情况。结果:牙根纵裂患根的牙周组织破坏明显大于无纵裂牙根,根纵裂处牙周袋最深,患牙面中度到重度磨耗,出现非工作尖高陡,工作尖磨平,深面凹及远中边缘嵴低平等改变,存在干扰和(或)创伤易感因素。活髓牙牙根纵裂患牙中磨牙发生最多。结论:因面形态改变而致的过大力与异常方向的力可能是活髓牙牙根纵裂发生的重要条件。
Objective：The correlation analysis of multiple factors in pathogenic causes of vertical root fracture between vital teeth and nonvital teeth was used to investigate the pathogenesis of vertical root fracture in vital teeth. Methods：A total of 309 cases of vertical root fracture in 277 patients were investigated. The bad oral habits,periodontal status,occlusal morphology,abrasion degree,occlusal relationship and X-ray film were observed and evaluated. Results：Periodontal tissue destruction was significantly larger than roots without vertical fracture. The formation of the most deep periodontal pocket,severe occlusal surface wear,high and steep non-working tip,abrased working tip,deep occlusal surface concave and lower distal edge which were seen in the affected teeth,were risk factors of occlusal interference and occlusal trauma. Vertical root fracture in vital teeth that the molar was mostly involved. Conclusion：Changes of occlusal morphology in vital teeth lead to over occlusal force and abnormal direction of occlusal force,which contribute significantly to vertical root fracture in vital teeth.
出处
《临床口腔医学杂志》
2017年第11期675-677,共3页
Journal of Clinical Stomatology
基金
长沙市科技计划科项目(K1406037-31)
关键词
牙根纵裂
活髓牙
牙
平衡
Vertical root fracture
Vital teeth
Dental occlusion
Balance
