Global Trends in Micro-CT Studies of Root Canal Morphology: A 25-Year Bibliometric Analysis

Abstract

Objectives: This study aimed to conduct a bibliometric analysis of publications on the use of micro-computed tomography (micro-CT) in root canal morphology research to map scientific output, assess collaboration patterns, and identify thematic trends.

Materials and Methods: Articles published between 2000 and 2025 were retrieved from the Web of Science Core Collection (WoSCC), limited to the Science Citation Index Expanded (SCI-Expanded). After applying the inclusion and exclusion criteria, eligible studies were analyzed by publication year, authorship, country of origin, journal and keyword occurrence. Data were processed using Microsoft Excel, and bibliometric networks were visualized in VOSviewer (v1.6.15).

Results: Publication output increased steadily after 2010, reaching a plateau during 2020. Brazil, the United States, and China were the most productive countries, together contributing over 60% of all SCI-indexed articles, while Türkiye, Germany, and Switzerland also showed notable growth. Versiani, Sousa-Neto, and Keleş were among the most prolific and influential authors. Keyword mapping revealed three main clusters: instrumentation and preparation, imaging-based anatomical analysis, and cone-beam computed tomography.

Conclusion: Micro-CT has become an essential imaging tool in endodontic morphology research, allowing precise three-dimensional evaluation of root canal anatomy. Although it was initially used mainly for validation purposes, it has progressively evolved into a comprehensive tool for detailed assessment of root canal morphology and quantitative analysis in endodontic studies.