Jemt Torsten, Olsson Malin, Franke Stenport Victoria
Department of Prosthetic Dentistry/Dental Materials Science, Institute of Odontology, Sahlgrenska Academy at Göteborg University, Göteborg, Sweden.
Brånemark Clinic, Public Dental Health Service, Göteborg, Sweden.
Clin Implant Dent Relat Res. 2015 Oct;17 Suppl 2:e501-10. doi: 10.1111/cid.12277. Epub 2014 Dec 23.
Even though there are many studies available reporting on implant failures, there are few studies that follow implant failures over time in large populations.
The purpose of this article is to present an overview of the annual incidence of reported implant failures for patients and operations over a 28-year period.
A total of 8,528 patients were consecutively provided with 39,077 implants in 10,719 implant operations during a 27-year period (1986-2012) at one specialist clinic. All patients with reported failures of implants during a 28-year routine follow-up period (1986-2013) were included, and data from the patients' files were retrieved and reported.
Altogether, 857 patients (882 jaws/operations) were identified with one or more failures (10.0% of patients/8.5% of operations). Mean annual incidence of first failure showed obvious variations between years, even between seemingly clinically similar situations. However, incidence of first implant failure was higher for upper than lower jaws (p < .05), within 1 year of surgery (69%) than after 1 year (p < .05), and for implants with a turned surface compared with implants with a moderately rough surface (p < .05).
With regard to annual failure incidence in relation to total number of operations over time, obvious variations in failure rate can be observed between seemingly similar clinical situations, as well as significant differences in incidence of first implant failure between the first year after surgery and later time points, between upper and lower jaws using implants with turned surfaces, and between operations to install implants with turned surfaces and those to install implants with moderately rough surfaces.
尽管有许多关于种植体失败的研究报告，但很少有研究在大样本群体中对种植体失败情况进行长期跟踪。
本文旨在概述28年间报告的患者和手术中种植体失败的年发生率。
在一家专科诊所，于27年期间（1986 - 2012年）连续为8528例患者进行了10719次种植手术，共植入39077枚种植体。纳入了在28年常规随访期（1986 - 2013年）内报告种植体失败的所有患者，并检索和报告了患者档案中的数据。
总共确定了857例患者（882例颌骨/手术）出现一次或多次失败（占患者的10.0%/占手术的8.5%）。首次失败的年平均发生率在不同年份间有明显差异，即使在看似临床情况相似的情况下也是如此。然而，上颌种植体首次失败的发生率高于下颌（p < 0.05），术后1年内（69%）高于术后1年（p < 0.05），且表面光滑的种植体比表面适度粗糙的种植体首次失败发生率更高（p < 0.05）。
就随时间推移与手术总数相关的年失败发生率而言，在看似相似的临床情况下可观察到失败率存在明显差异，以及在术后第一年与后期时间点之间、使用表面光滑种植体的上下颌之间、安装表面光滑种植体的手术与安装表面适度粗糙种植体的手术之间，首次种植体失败发生率存在显著差异。
