Purpose: Implant component fractures are one of the most serious complications in implant treatment. With a better understanding of the risk factors for fracture in the preoperative, surgery, superstructure, and post-loading phases of implant treatment, low-risk treatment could reduce implant component fractures, leading to a better prognosis. The aim of this study was to clarify the risk factors for abutment and implant fractures that occur after loading, and to perform a retrospective, approximately 10-year follow-up study to explore the risk factors in each treatment phase.

Methods: Subjects were fitted with an implant prosthesis between January 2008 and December 2009. In total, 1,126 Ankylos implants in 430 patients were included for analysis. Binary logistic regression analysis was performed to extract factors related to non-fracture and fracture of the abutment or implant as a dependent variable.

Results: Gender (OR = 3.466, 95% CI 1.296-9.268, P = 0.013), gonial angle (OR = 3.420, 95% CI 1.308-8.945, P = 0.012), and splinting status of the superstructure (OR = 4.456, 95% CI 1.861-10.669, P = 0.001) were identified as significant risk factors.

Conclusion: The risk of fracture is increased in males, especially those with a mandibular angle of less than 120° on panoramic radiographs, and those with a non-splinted superstructure.

目的：植入物部件骨折是植入物治疗中最严重的并发症之一。通过更好地了解植入物治疗的术前，手术，上部结构和后负荷阶段骨折的危险因素，低风险治疗可以减少植入物部件的骨折，从而改善预后。这项研究的目的是弄清负载后发生的基台和种植体骨折的危险因素，并进行一项为期约10年的回顾性研究，以探讨每个治疗阶段的危险因素。

方法：在2008年1月至2009年12月之间为受试者配备假体。总共纳入430例患者的1,126例Ankylos假体进行分析。进行二进制逻辑回归分析以提取与基台或种植体的非骨折和骨折相关的因素作为因变量。

结果：性别（OR = 3.466，95％CI 1.296-9.268，P = 0.013），角向角（OR = 3.420，95％CI 1.308-8.945，P = 0.012），上部结构的夹板状态（OR = 4.456， 95％CI 1.861-10.669，P = 0.001）被确定为重要的危险因素。

结论：男性的骨折风险增加，尤其是在全景X线照片上下颌角小于120°的男性和上部无夹板的男性。