Department of Prosthodontics and Crown and Bridge, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India.
Department of Prosthodontics, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India.
J Indian Prosthodont Soc. 2022 Apr-Jun;22(2):131-142. doi: 10.4103/jips.jips_437_21.
The aim of the study is to systematically assess the impact of low-temperature degradation (LTD) simulation in an autoclave on mechanical and microstructural properties of infiltrated monolithic zirconia compared to the noninfiltrated zirconia.
Systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analysis 2020 guidelines.
An electronic search was done within these databases: PubMed, Scopus, and Web of Science, Science Direct, Embase, Wiley, Google Scholar for articles published between 2000 and March 2021. Search results that met eligibility criteria were categorized into two groups based on properties assessed of infiltrated monolithic zirconia exposed to LTD (also called aging simulation) - (a) mechanical (flexural strength and fracture toughness) and (b) microstructural properties (phase transformation rate and m content).
Qualitative analysis.
The search identified 272 preliminary results. After discarding duplicates, and screening of titles, abstracts, and full texts, 10 articles finally met inclusion criteria. Data were collected on author's details and their countries, journal and year of publication, type and percentage of infiltration, aging protocol (duration and temperature), mechanical, and microstructural properties. All the included studies invariably revealed better aging resistance without a change in mechanical properties for infiltrated monolithic zirconia as compared to noninfiltrated species.
Infiltration within monolithic zirconia can reduce degradation and simultaneously maintain their mechanical properties by preventing water entry into grain contours. The final m content was less for infiltrated Zirconium, indicating a lesser phase transformation and better aging resistance.
Systematic review protocol registered at PROSPERO CRD42021248153.
本研究旨在系统评估在高压釜中进行低温降解（LTD）模拟对渗透整体氧化锆的机械和微观结构性能的影响，并与未渗透氧化锆进行比较。
根据 2020 年系统评价和荟萃分析首选报告项目的指南进行系统回顾。
在这些数据库中进行了电子搜索：PubMed、Scopus、Web of Science、Science Direct、Embase、Wiley、Google Scholar，检索 2000 年至 2021 年 3 月期间发表的文章。符合入选标准的检索结果分为两组，根据渗透整体氧化锆暴露于 LTD（也称为老化模拟）后的评估属性进行分类：（a）机械（弯曲强度和断裂韧性）和（b）微观结构特性（相转变率和 m 含量）。
定性分析。
搜索确定了 272 个初步结果。在去除重复项以及标题、摘要和全文筛选后，最终有 10 篇文章符合纳入标准。收集了作者详细信息及其所在国家、期刊和出版年份、渗透类型和百分比、老化方案（持续时间和温度）、机械和微观结构特性。所有纳入的研究都表明，与未渗透的氧化锆相比，渗透整体氧化锆具有更好的耐老化性，而机械性能没有变化。
在整体氧化锆中渗透可以通过防止水进入晶粒轮廓来减少降解并同时保持其机械性能。渗透氧化锆的最终 m 含量较低，表明相变较少，耐老化性更好。
系统评价方案在 PROSPERO CRD42021248153 上注册。
