Chan C P, Lin C P, Tseng S C, Jeng J H
Dental Department, Chang Gung Memorial Hospital, Taipei, Taiwan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1999 Apr;87(4):504-7. doi: 10.1016/s1079-2104(99)70252-0.
The purpose of this study was to compare endodontically versus nonendodontically treated teeth with respect to clinical features, including patient age and gender and tooth types of vertical root fractures.
A total of 315 consecutive cases of vertical root fracture occurring in 274 Chinese patients during a 1 3-year period were reviewed. Age and gender, as well as tooth type and root distribution of vertical root fractures, were presented and compared in endodontically versus nonendodontically treated teeth.
Most patients (87%) had 1 fractured tooth; the others had 2 or 3 fractured teeth. Of all vertical root fractures, 40% occurred in nonendodontically treated teeth. In comparison with those in endodontically treated teeth, vertical root fractures in nonendodontically treated teeth tended to occur in patients with a higher mean age (55 years vs. 51 years) and were more frequent in male patients (78% vs. 58%). Vertical root fractures occurred in nonendodontically treated teeth more often in molars (84% vs. 53%), less often in premolars (16% vs. 33%), and seldom in anteriors (1 tooth vs. 27 teeth).
Vertical root fractures in nonendodontically treated teeth are not uncommon and comprise a large proportion of such fractures in Chinese patients. Differences between endodontically and nonendodontically treated teeth in patient age and gender, as well as in tooth types of vertical root fractures, were demonstrated.
本研究旨在比较经根管治疗和未经根管治疗的牙齿在临床特征方面的差异，包括患者年龄、性别以及垂直根折的牙齿类型。
回顾了13年间274例中国患者连续发生的315例垂直根折病例。呈现并比较了经根管治疗和未经根管治疗的牙齿的年龄、性别、垂直根折的牙齿类型及牙根分布情况。
大多数患者（87%）有1颗牙齿发生根折，其他患者有2颗或3颗牙齿发生根折。在所有垂直根折中，40%发生在未经根管治疗的牙齿。与经根管治疗的牙齿相比，未经根管治疗的牙齿发生垂直根折的患者平均年龄较高（55岁对51岁），男性患者更常见（78%对58%）。未经根管治疗的牙齿垂直根折在磨牙中更常见（84%对53%），在前磨牙中较少见（16%对33%），在前牙中很少见（1颗对27颗）。
未经根管治疗的牙齿发生垂直根折并不少见，在中国患者中占此类根折的很大比例。研究显示了经根管治疗和未经根管治疗的牙齿在患者年龄、性别以及垂直根折牙齿类型方面的差异。
