Abstract
This study aimed to review the current state of the root caries field, explore the current hot topic, and anticipate future research frontiers. The Web of Science Core Collections was searched to acquire publications that were relevant to root caries from 1992 to 2021. After retrieval and manual screening, the co-occurrence and co-operation analysis of keywords and countries/institutions/authors were performed through CiteSpace and VOSviewer based on two periods (1992–2006 and 2007–2021). From 1992 to 2021, 451 unique publications were selected. The USA, which has been the center of international cooperation, has produced the most publications in the research area in 1992–2021. Journal of Dental Research and Caries Research are the main counterpart journals in the field of root caries. The University of London is the institution with the highest number of publications in the analyzed 30 years. “Demineralization,” “remineralization,” “aged,” “dentin,” and “fluoride” have been commonly used as keywords throughout the past 30 years. More studies from different aspects have been published in the field of root caries in recent years (2007–2021). The findings of this study provide a full picture of the last 30 years in this research area; hopefully, they also provide essential information for researchers and policymakers to make decisions.
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