Restorative Dentistry, University of Passo Fundo, Passo Fundo, RS, Brasil.
J Evid Based Dent Pract. 2010 Mar;10(1):35-6. doi: 10.1016/j.jebdp.2009.11.014.
Clinical records were reviewed for more than 80,000 different patients from the General Dental Services (GDS) in England and Wales. A total of 2562 porcelain veneer restorations were placed in 1177 adult patients (> or =18 years old, 35% male and 65% female) over a period of 11 years (January, 1991, to March, 2002).
KEY EXPOSURE/STUDY FACTOR: A number of factors were considered potentially capable of impacting the need for reintervention on teeth restored with porcelain veneers. These included a number of patient factors such as gender, age, and dental utilization practices. Other factors analyzed included the tooth position receiving veneers, dentists' qualifications, and where and when the veneer was placed (eg, month and geographic location).
The main outcome was survival over 10 years between initial placement and the first date of intervention for each tooth treated with a porcelain veneer. Information was abstracted from clinical records to create an analytical dataset of porcelain veneers, with their dates of placement and their dates, if any, of reintervention. This dataset was analyzed using a modified Kaplan-Meier statistic and a Cox-regression model.
Factors that were found to influence the survival of porcelain veneers included the following: gender, with veneers placed in male patients surviving for less time than those placed for female patients (P = .01); patient age, with poorer survival of porcelain veneers in older (60 years or older) patients (P = .003); changing dentist, with teeth of patients who change dentist surviving for shorter periods of time to reintervention than for those patients who continue in the care of the same dentist (P < .001); patient's treatment need, with patients whose gross annual fees on all dental treatment are higher having teeth with less time to reintervention after receiving veneers than those patients with lower annual fees (P < .001); patient paying status, with patients who are exempt from charges also having veneered teeth with shorter time to reintervention (P <.001). Nevertheless, the factors associated with tooth position or mouth quadrant and with the dentist (gender, age, years since graduation, and country of qualification) did not influence the survival rate.
Although dentist factors do not appear to play a part, a variety of patient factors have been found to influence veneer survival to reintervention. Overall, 53% of porcelain veneers in the study survived without reintervention at 10 years.
我们对英格兰和威尔士的普通牙科服务（GDS）中的 8 万多名不同患者的临床记录进行了回顾。在 11 年的时间里（1991 年 1 月至 2002 年 3 月），共有 1177 名成年患者（≥18 岁，35%为男性，65%为女性）接受了总共 2562 个瓷贴面修复。
主要暴露/研究因素：许多因素被认为可能会影响用瓷贴面修复的牙齿的再次介入需求。这些因素包括一些患者因素，如性别、年龄和牙科利用习惯。分析的其他因素包括接受贴面的牙齿位置、牙医的资格以及贴面放置的位置和时间（例如，月份和地理位置）。
主要结果是每颗接受瓷贴面治疗的牙齿从初次放置到第一次干预的 10 年期间的生存情况。从临床记录中提取信息，创建一个包含瓷贴面的日期及其重新介入日期（如果有）的分析数据集。使用改良的 Kaplan-Meier 统计和 Cox 回归模型对该数据集进行了分析。
影响瓷贴面生存的因素包括以下内容：性别，男性患者的贴面生存时间短于女性患者（P=0.01）；患者年龄，年龄较大（60 岁或以上）患者的瓷贴面生存情况较差（P=0.003）；牙医更换，更换牙医的患者的牙齿在重新介入之前的存活时间短于继续由同一位牙医治疗的患者（P＜0.001）；患者治疗需求，所有牙科治疗的总年度费用较高的患者在接受贴面后重新介入的时间较短，而年度费用较低的患者则较短（P＜0.001）；患者支付状况，豁免费用的患者也有贴面牙重新介入时间较短（P＜0.001）。尽管与牙位或口腔象限以及牙医（性别、年龄、毕业年限和资格所在国家）相关的因素与生存率无关。
尽管牙医因素似乎没有起到作用，但已经发现各种患者因素会影响贴面修复后的生存。总的来说，在研究中，53%的瓷贴面在 10 年内无需再次介入即可存活。
