Primary Dental Care Research Group, University of Birmingham School of Dentistry, College of Medical and Dental Sciences, Pebble Mill, Birmingham, B5 7EG, UK.
Br Dent J. 2018 Oct 26;225(8):731-741. doi: 10.1038/sj.bdj.2018.863.
It is the aim of this paper to present data on the survival of restorations in canine teeth by analysis of the time to re-intervention on the restorations and time to extraction of the restored tooth, and to discuss the factors which may influence this.
A data set was established, consisting of General Dental Services (GDS) patients, this being obtained from all records for adults (aged 18 or over at date of acceptance) in the GDS of England and Wales between 1990 and 2006. The data consist of items obtained from the payment claims submitted by GDS dentists to the Dental Practice Board (DPB) in Eastbourne, Sussex, UK. This study examined the recorded intervals between placing a restoration in a canine tooth and re-intervention on the tooth, and the time to extraction of the restored tooth.
Data for more than three million different patients and more than 25 million courses of treatment were included in the analysis. Included were all records for adults (aged 18 or over at date of acceptance). Overall, 1,232,052 restorations involving canine teeth were included in the analysis. With regard to time to re-intervention, 33% of restorations had survived at 15 years, and with regard to time to extraction of the restored tooth, cumulative survival was 78% at 15 years. Veneers and crowns performed best in terms of time to re-intervention, but crowns performed worst when time to extraction was analysed.
Overall, crowns and porcelain veneers placed on canine teeth perform best to re-intervention after 15 years, but crowns perform worst when the time to extraction of the restored tooth is examined and veneers perform best, with a 20 percentage point difference in cumulative survival at fifteen years between crowns and the best performing restoration in the under-40 year age group, this effect being accentuated in the over-40 year age group. Other factors influencing restoration longevity in canine teeth include: patient age, dentist age and the patient's annual need for dental treatment.
本文旨在通过分析修复体再干预时间和修复牙拔除时间，提供犬齿修复体存活率的数据，并讨论可能影响这些数据的因素。
建立了一个数据集，包括英格兰和威尔士的一般牙科服务（GDS）患者，该数据集是通过 1990 年至 2006 年间英国东萨塞克斯郡牙科实践委员会（DPB）收到的所有 GDS 成年（接受日期年满 18 岁）患者的记录获得的。该研究检查了在犬齿中放置修复体和对该牙进行再干预之间记录的间隔时间，以及修复牙的拔除时间。
分析中包括了超过 300 万不同患者和超过 2500 万次治疗的记录。包括所有成年（接受日期年满 18 岁）的记录。总体而言，分析中包括了涉及犬齿的 1232052 个修复体。关于再干预时间，33%的修复体在 15 年内幸存，关于修复牙拔除时间，15 年内累计生存率为 78%。贴面和牙冠在再干预时间方面表现最好，但在分析牙冠拔除时间时表现最差。
总体而言，牙冠和瓷贴面在 15 年后对再干预的效果最好，但在分析修复牙拔除时间时，牙冠表现最差，在 15 年内，牙冠和表现最好的修复体之间的累计生存率相差 20 个百分点，在 40 岁以上年龄组中，这种效果更加明显。影响犬齿修复体寿命的其他因素包括：患者年龄、牙医年龄和患者每年的牙科治疗需求。
