Graduate School of Health Sciences, PhD programs, Prosthodontics Department, Istanbul Medipol University, Istanbul, Turkey.
Department of Biostatistics and Medical Informatics, Faculty of Medicine, Yeditepe University, Istanbul, Turkey.
J Esthet Restor Dent. 2022 Apr;34(3):473-489. doi: 10.1111/jerd.12823. Epub 2021 Oct 8.
An assessment was performed to identify and evaluate dental enamel wear caused by monolithic zirconia restoration. Literature searches were conducted in PubMed, Science Direct, Cochrane Evidence, and the Cochrane Library up to May 2020.
Studies were selected for systematic review according to the inclusion (articles conducted on the wear of enamel samples opposing monolithic zirconia) and exclusion (case reports, non-English articles, and monolithic zirconia samples facing other materials rather than human enamel) criteria. Of those, articles on polished and glazed monolithic zirconia subjected to a 50 N vertical load with a range of 240,000-250,000 cycles, equivalent to 1 year of in vivo mastication, were included in the meta-analysis.
In total, 3968 articles were pooled. Twenty-five articles met the inclusion criteria for the systematic review. Three studies were included in the meta-analysis. The results showed that the enamel wear against monolithic zirconia was within the statistically accepted level. Moreover, the polished monolithic zirconia surface caused less enamel wear than the glazed surface.
This review indicates that monolithic zirconia restorations cause acceptable antagonist enamel wear. Moreover, the meta-analysis results agreed that the final restoration's surface texture plays an essential role in the wear process.
Monolithic zirconia restorations have been widely used in dental practice because they eliminate the chipping problems resulting from using veneered restorations. With recent technology development, monolithic zirconia has obtained more esthetic features and a more natural look. However, due to the high strength and surface roughness of monolithic zirconia, wear on the antagonist's teeth was detected. The results showed that this wear amount was statistically acceptable and lower than other ceramics such as feldspathic porcelain and enamel. Furthermore, surface treatment methods must be applied to minimize tooth wear, as polished or glazed surfaces interfere with enamel loss.
评估整体氧化锆修复体引起的牙釉质磨损。检索了截至 2020 年 5 月的 PubMed、Science Direct、Cochrane Evidence 和 Cochrane Library 中的文献。
根据纳入标准（对与整体氧化锆相对的釉质样本磨损的研究）和排除标准（病例报告、非英语文章和与其他材料而不是人釉质相对的整体氧化锆样本），对研究进行系统评价。其中，包括经过抛光和上釉的整体氧化锆，在 240,000-250,000 次循环的 50N 垂直负载下，相当于体内咀嚼 1 年，进行 meta 分析。
共汇集了 3968 篇文章。25 篇文章符合系统评价的纳入标准。有 3 项研究纳入 meta 分析。结果表明，牙釉质对整体氧化锆的磨损处于统计学可接受水平。此外，抛光的整体氧化锆表面比上釉的表面导致的牙釉质磨损更少。
综述表明，整体氧化锆修复体引起的对颌牙釉质磨损可接受。此外，meta 分析结果一致认为，最终修复体的表面纹理在磨损过程中起着重要作用。
整体氧化锆修复体已广泛应用于牙科实践中，因为它们消除了使用贴面修复体导致的崩瓷问题。随着最近技术的发展，整体氧化锆获得了更多的美学特征和更自然的外观。然而，由于整体氧化锆的高强度和表面粗糙度，发现对颌牙有磨损。结果表明，这种磨损量在统计学上是可接受的，低于其他陶瓷，如长石瓷和牙釉质。此外，必须应用表面处理方法以最小化牙齿磨损，因为抛光或上釉的表面会干扰牙釉质的损失。
