Primary Dental Care Research Group, University of Birmingham, School of Dentistry, College of Medical and Dental Sciences, St. Chad's Queensway, Birmingham B4 6NN, UK.
J Dent. 2012 Nov;40(11):886-95. doi: 10.1016/j.jdent.2012.07.002. Epub 2012 Aug 3.
It is the aim of this paper to consider the factors associated with the need for re-intervention on a conventional or resin-retained bridge, excluding recementation.
A data set was established consisting of patients, 18 years or older, whose birthdays were included within a set of randomly selected dates, one of which was chosen in each possible year of birth and whose restoration records contained the placement of one or more indirect restorations on courses of treatment with last date on the claim form after 31st December 1990, and with date of acceptance after September 1990 and before January 2002. For each patient treated with a bridge, the subsequent history of intervention on each tooth used as a bridge abutment was consulted, and the next date of intervention, if any could be found in the extended data set, was obtained. Thus a data set was created of bridge abutments which have been placed, with their dates of placement and their dates, if any, of re-intervention.
Data for over 80,000 different adult patients were analysed, of whom 46% were male and 54% female. A total of 7874 abutments (6800 conventional and 1074 resin-retained) were obtained from the data over a period of eleven years. Factors which were found to reduce outcome of bridges included type of bridge, patient payment exemption status, patient attendance pattern and position of the bridge in the patient's mouth.
Survival of conventional bridge abutments has been shown to be 72% at 10 years, this being similar survival time to crowns. Various patient factors and bridge type were also found to influence survival.
本文旨在考虑与常规或树脂保留桥需要再次干预相关的因素，不包括重新黏固。
建立了一个数据集，其中包括年龄在 18 岁或以上的患者，其生日包含在一组随机选择的日期中，每年选择一个日期，并且在记录中有一个或多个间接修复体放置在治疗过程中，最后一次就诊日期在 1990 年 12 月 31 日之后，并且受理日期在 1990 年 9 月之后和 2002 年 1 月之前。对于每个用桥体治疗的患者，都查阅了用作桥基牙的每颗牙的后续干预史，如果可以在扩展数据集中找到任何后续干预的日期，则获取该日期。因此，创建了一个桥基牙数据集，其中包含已放置的桥基牙及其放置日期，如果有任何再次干预的日期。
分析了超过 80000 名不同成年患者的数据，其中 46%为男性，54%为女性。在十一年的时间里，从数据中总共获得了 7874 个基牙（6800 个常规和 1074 个树脂保留）。发现影响桥体结果的因素包括桥的类型、患者的免付费状态、患者的就诊模式以及桥在患者口中的位置。
常规桥基牙的 10 年生存率为 72%，与牙冠的生存率相似。还发现各种患者因素和桥体类型也会影响生存率。
