Statement of problem

Lithium disilicate (LD) is a popular dental ceramic and has been a focus of dental research. Nevertheless, a quantified literature analysis focusing on the research of lithium disilicate is lacking.

Purpose

The purpose of this bibliometric analysis was to review the progress of research into lithium disilicate in dentistry, including the identification of contributing researchers, organizations, countries or regions, journals, and the analysis of high-impact keywords and research trending.

Material and methods

The search was carried out within the topic field of the Web of Science (WoS) database, collecting publications related to LD from between 1996 and 2019. Metadata including the titles, abstracts, keywords, authors, affiliations, countries or regions, and references were extracted. Bibliometric indicators in terms of documents, authors, journals, and keywords were analyzed.

Results

Between 1996 and 2019, the dental research on LD trended upward. Scholars in the United States, Germany, Switzerland, and Brazil actively participated in the research on LD, and publications from the United States had the most citations. The Journal of Prosthetic Dentistry and Dental Materials were the major contributing journals. High-impact terms could be categorized into types of restorative material, types of prostheses, and properties or techniques of materials. Co-occurrence and relative normalized citation analysis of keywords highlighted several research interests, such as comparison studies between LD and zirconia, computer-aided design and computer-aided manufacturing (CAD-CAM) techniques, and the performance of complete coverage LD restorations.

Conclusions

With the global upsurge in research on lithium disilicate, extensive collaborations and citations have been noted among authors, institutions, and countries or regions. Research hotspots include types of restorative material, types of prostheses, and properties or techniques of materials.

中文翻译：

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二硅酸锂在牙科领域的现状与研究趋势：文献计量分析

问题陈述

二硅酸锂 (LD) 是一种流行的牙科陶瓷，一直是牙科研究的重点。然而，缺乏专注于二硅酸锂研究的量化文献分析。

目的

本文献计量分析的目的是回顾二硅酸锂在牙科领域的研究进展，包括确定贡献的研究人员、组织、国家或地区、期刊，以及分析高影响力关键词和研究趋势。

材料与方法

检索在 Web of Science (WoS) 数据库的主题字段内进行，收集了 1996 年至 2019 年间与 LD 相关的出版物。元数据包括标题、摘要、关键词、作者、隶属关系、国家或地区和参考文献。提取。分析了文献、作者、期刊和关键词方面的文献计量指标。

结果

1996年至2019年间，对LD的牙科研究呈上升趋势。美国、德国、瑞士和巴西的学者积极参与了LD的研究，其中美国的出版物被引用次数最多。The Journal of Prosthetic Dentistry and Dental Materials 是主要的投稿期刊。高影响力术语可分为修复材料的类型、假肢的类型以及材料的特性或技术。关键词的共现和相对归一化引用分析突出了几个研究兴趣，例如 LD 和氧化锆之间的比较研究、计算机辅助设计和计算机辅助制造 (CAD-CAM) 技术以及完全覆盖 LD 修复体的性能。

结论

随着全球对二硅酸锂研究的热潮，作者、机构和国家或地区之间的广泛合作和引用已经引起关注。研究热点包括修复材料的种类、假体的种类、材料的特性或技术。