Statement of problem

Patients and clinicians are aware of the efficacy and benefits of complete dentures, but evidence regarding their longevity is limited.

Purpose

The purpose of this systematic review was to examine the literature describing the longevity of complete dentures and to review variations in longevity by denture type and duration of follow-up.

Material and methods

Four electronic databases were searched by using key terms: MEDLINE, CINAHL (EBSCO), Dentistry and Oral Sciences Databases, and The Cochrane Library. Studies meeting the inclusion criteria were reviewed according to an established protocol and data extracted. Reference lists of identified studies were examined. Risk of bias was assessed by using the AXIS tool. Weighted means and weighted standard deviations were calculated. Pooled complete denture failure proportions were estimated by using random effects models based on the DerSimonian and Laird method.

Results

The search yielded 21 607 unique abstracts, of which 273 met the inclusion criteria. Assessment of the full-text articles reduced this number to 42. Of these, 24 studies were rated as having low risk of bias and 18 as very low. The weighted mean ±standard deviation longevity of maxillary complete dentures was 10.3 ±3.8 years, of mandibular dentures was 8.6 ±2.6 years, and of both maxillary and mandibular dentures was 10.8 ±4.7 years. The pooled failure proportion for complete dentures observed for 2 years or less was 0.05 (95% confidence interval [CI]: 0.00-0.10), 5 to 6 years was 0.12 (95% CI: 0.08-0.16), and 10 years or more was 0.41 (95% CI: 0.28-0.53).

Conclusions

Complete dentures, fabricated primarily in university settings, were found to have a weighted mean ±standard deviation longevity of 10.1 ±4.0 years. The failure rate of these prostheses increased with denture age, and the longevity of maxillary dentures was greater than that of mandibular dentures.

中文翻译：

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全口假牙的寿命：系统评价和荟萃分析

问题陈述

患者和临床医生都知道全口义齿的功效和益处，但是有关其寿命的证据有限。

目的

这项系统评价的目的是检查描述完整义齿寿命的文献，并根据义齿类型和随访时间回顾寿命的变化。

材料与方法

使用关键词搜索了四个电子数据库：MEDLINE，CINAHL（EBSCO），牙科和口腔科学数据库以及Cochrane图书馆。符合纳入标准的研究根据既定的方案进行审查，并提取数据。检查了已鉴定研究的参考文献清单。偏倚的风险通过使用AXIS工具进行了评估。计算加权平均值和加权标准偏差。通过使用基于DerSimonian和Laird方法的随机效应模型来评估合并的全口义齿的失败比例。

结果

搜索产生了21607个独特摘要，其中273个符合纳入标准。对全文文章的评估使这一数字降至42。其中，有24项研究的偏倚风险低，有18项偏低的风险。上颌全口义齿的加权平均数±标准差寿命为10.3±3.8年，下颌全口义齿为8.6±2.6年，上下颌全口义齿均为10.8±4.7年。在2年或更短时间内观察到的全口义齿的合并失败比例为0.05（95％置信区间[CI]：0.00-0.10），5至6年为0.12（95％CI：0.08-0.16），以及10年以上值为0.41（95％CI：0.28-0.53）。

结论

发现主要在大学环境中制造的全口义齿的加权平均值±标准偏差寿命为10.1±4.0年。这些义齿的失败率随着义齿年龄的增加而增加，上颌义齿的寿命比下颌义齿的寿命长。