一种回顾性研究光滑和粗糙表面牙种植体的存活率。

A retrospective study of the survival of smooth- and rough-surface dental implants.

机构信息

Department of Dental Specialties, Mayo Clinic, Rochester, Minnesota, USA.

出版信息

Int J Oral Maxillofac Implants. 2009 Nov-Dec;24(6):1113-8.

PMID:20162117

Abstract

PURPOSE

To compare the time-dependent cumulative survival rates of smooth- and rough-surface dental implants.

MATERIALS AND METHODS

A retrospective chart review was conducted for two time periods: January 1, 1991, through December 31, 1996, during which smooth-surface implants were used, and January 1, 2001, through December 31, 2005, during which rough-surface implants were used. This study included all implants placed and restored in one institution during the two time frames. Data were collected relative to patient age, gender, implant diameter, implant length, and anatomic location of implants. To facilitate the comparison, implants from the first and second time periods were followed through mid-1998 and mid-2007, respectively. Associations of patient/implant characteristics with implant survival were evaluated using marginal Cox proportional hazards models (adjusted for age and gender) and summarized with hazard ratios and corresponding 95% confidence intervals.

RESULTS

A total of 593 patients (322 women and 271 men; mean age, 51.3 +/- 18.5 years) received 2,182 smooth-surface implants between 1991 and 1996, while 905 patients (539 women and 366 men; mean age, 48.2 +/- 17.8 years) received 2,425 rough-surface implants between 2001 and 2005. At 5 years after implant placement, survival rates were 94.0% and 94.5%, respectively, for smooth- and rough-surface implants (difference not significant). Among the smooth implants, implant length <or= 10 mm and anatomic location were identified as significantly associated with implant failure. In contrast, among the rough implants, implant length <or= 10 mm and anatomic location were not identified as risk factors for implant failure.

CONCLUSIONS

Based on this retrospective study of two groups of patients with different implant surfaces and more than 2,000 implants in each group, there was no significant difference in the survival rates of smooth- and rough-surface dental implants. Anatomic location and implant length <or= 10 mm were associated with failures of the smooth-surface implants only.

摘要

目的

比较光滑表面和粗糙表面种植体的时间依赖性累积存活率。

材料和方法

对两个时间段进行了回顾性图表审查：1991 年 1 月 1 日至 1996 年 12 月 31 日，使用光滑表面种植体；2001 年 1 月 1 日至 2005 年 12 月 31 日，使用粗糙表面种植体。本研究包括在两个时间段内在一个机构中放置和修复的所有种植体。数据与患者年龄、性别、种植体直径、种植体长度和种植体解剖位置有关。为了便于比较，第一和第二时间段的种植体分别在 1998 年中期和 2007 年中期进行随访。使用边缘 Cox 比例风险模型（调整年龄和性别）评估患者/种植体特征与种植体存活率的关系，并以风险比和相应的 95%置信区间进行总结。

结果

共有 593 名患者（322 名女性和 271 名男性；平均年龄 51.3±18.5 岁）在 1991 年至 1996 年间接受了 2182 个光滑表面种植体，而 905 名患者（539 名女性和 366 名男性；平均年龄 48.2±17.8 岁）在 2001 年至 2005 年间接受了 2425 个粗糙表面种植体。种植体放置后 5 年，光滑表面和粗糙表面种植体的存活率分别为 94.0%和 94.5%（无显著差异）。在光滑种植体中，种植体长度≤10mm 和解剖位置被确定为与种植体失败显著相关。相比之下，在粗糙种植体中，种植体长度≤10mm 和解剖位置未被确定为种植体失败的危险因素。