Comparative Evaluation of the Shaping Ability of Three Rotary Systems in Primary Molars: In Vitro Study

Document Type : Original Article

Authors

1 Lecturer of Pediatric Dentistry, BeniSuef University

2 Associate Professor, Department of Endodontics, Faculty of Dentistry, Fayoum University

3 Associate Professor, Endodontics, Faculty of Dentistry, New Giza University, Cairo Egypt

Abstract

Aim: This in-vitro study aimed to evaluate the shaping ability of hand K files, Kedo S, Hyflex, and the Race evo rotary files when used in the biomechanical preparation of primary molars by using CBCT.
Materials and methods: One hundred forty extracted human primary mandibular second molars were randomly allocated into 4 groups of 35 each. Group A: Prepared with stainless steel hand files (MANI, Inc.; Tochigi, Japan), group B: Prepared with Kedo S plus pediatric rotary files (Chennai, Tamil Nadu, India), group C: Prepared with Hyflex cm (Colten- Whaledent) rotary files and group D: Prepared with Race Evo (FKG Dentaire SA, La Chaux de Fonds, Switzerland) rotary files. Before starting any procedure, all the samples were scanned using cone-beam CT (Gendex -GXDP-800, Kavo, Dental Charlotte United States). Pre- operative measurements were performed at 3 points at the middle one third of the distal root canals of the primary molars. Postoperative scans were obtained similar to a preoperative manner. The root canal thickness measurements were made at the same level of the preoperative readings.
Results: Comparisons were made between the study groups' means. Data were compared using One Way ANOVA test followed by Tukey`s Post Hoc test. The findings revealed no significant difference between any of the groups.
Conclusion: No differences were noted concerning the shaping ability of the rotary systems used. Thus, all these systems could be used in instrumentation of primary molars.

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Egyptian Dental Journal
Volume 70, Issue 1 - Serial Number 5
January (Conservative Dentistry and Endodontics)
January 2024
Pages 691-698

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