ElHoussiney Amr G, Zhang He, Song Jinlin, Ji Ping, Wang Lu, Yang Sheng
Department of Prosthodontics.
Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, College of Stomatology, Chongqing Medical University, Chongqing, China.
Clin Cosmet Investig Dent. 2018 Feb 26;10:19-35. doi: 10.2147/CCIDE.S143910. eCollection 2018.
To compare the failure events and incidence of complications of different abutment materials in anterior and posterior regions. Failure was defined as complete loss of the abutment requiring replacement by a new abutment.
Electronic searches using PubMed/Medline and Google Scholar complemented with manual searches were performed with specific search terms. Searches were restricted to publications in English between January 2006 and March 2016.
A total of 863 and 1,264 implants were inserted in the anterior and posterior regions, respectively, in a total of 1,529 patients. No titanium abutments failed in anterior or posterior regions. On the other hand, 1.6% of zirconia abutments failed in the anterior region and 1.5% failed in the posterior region. Technical complications occurred mostly in the posterior region and mostly involved zirconia abutment. Meta-analysis was possible only for zirconia-abutment failure, due to considerable heterogeneity of studies and outcome variables. No significant difference in failure rate was found between anterior and posterior zirconia abutments (risk ratio 1.53, 95% CI 0.49-4.77; =0.47).
This systematic review and meta-analysis showed similar outcomes of different abutment materials when used in anterior and posterior regions in terms of failure events and biological and aesthetic complications. The only significant finding was the increased incidence of technical complications in the posterior region, mostly involving zirconia abutments. Abutment-screw loosening was the most common technical complication.
比较不同基台材料在前牙区和后牙区的失败事件及并发症发生率。失败定义为基台完全丧失，需要用新的基台替换。
使用PubMed/Medline和谷歌学术进行电子检索，并辅以手工检索，使用特定的检索词。检索限于2006年1月至2016年3月期间的英文出版物。
总共1529例患者在前牙区和后牙区分别植入了863颗和1264颗种植体。在前牙区或后牙区，没有钛基台失败。另一方面，1.6%的氧化锆基台在前牙区失败，1.5%在 后牙区失败。技术并发症大多发生在后牙区，且大多涉及氧化锆基台。由于研究和结果变量存在相当大的异质性，仅对氧化锆基台失败进行了荟萃分析。在前牙和后牙氧化锆基台之间未发现失败率有显著差异（风险比1.53，95%可信区间0.49 - 4.77；P = 0.47）。
这项系统评价和荟萃分析表明，不同基台材料在前牙区和后牙区使用时，在失败事件以及生物学和美学并发症方面具有相似的结果。唯一显著的发现是后牙区技术并发症的发生率增加，且大多涉及氧化锆基台。基台螺钉松动是最常见的技术并发症。
