Impact of Various Sleeve Materials on Temperature Variations During Guided Endodontic Access Cavity Preparation Utilizing Finite-Element Analysis

Q: What problem does guided endodontics introduce in calcified cases?

Guided endodontics improves precise access, but drilling during access can generate temperature increases that may risk damage to periradicular tissues.

Q: Which sleeve materials were compared for their thermal effects?

The study compared zirconia, cobalt-chromium (CoCr), and titanium sleeve materials and evaluated their influence on temperature changes during guided access.

Q: How were temperature changes evaluated in the study?

Temperature changes were assessed using finite-element analysis based on 3D models and validated experimentally using thermocouples under identical drilling conditions.

Sep 30, 2026

Uploaded by Alex Sinclair

Guided endodontics enables precise access in difficult cases such as calcified canals, yet drilling may create temperature rises that endanger periradicular tissues. This study assessed how different sleeve materials—zirconia, cobalt-chromium (CoCr), and titanium—affect temperature changes during guided endodontic access. Finite-element analysis used micro-CT-derived 3D models and Abaqus simulations, with experimental thermocouple validation under matched drilling conditions.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages11

Reading Time28 min

AccessFree to download

Abstract

Introduction

Materials and Methods

Finite-Element Analysis (FEA)

Experimental Validation

Results

Conclusion

Clinical and Experimental Dental Research ORIGINAL ARTICLE Impact of Various Sleeve Materials on Temperature Variations During Guided Endodontic Access Cavity Preparation Utilizing Finite‐Element Analysis Anna Muryani1,2 | Wandi Prasetia2 | Dudi Aripin2 | Hendra Dian Adhita Dharsono2 | Zainul Ahmad Rajion3 | Satrio Wicaksono4 1Faculty of Medicine, Universitas Padjadjaran, Bandung, West Java, Indonesia | 2Department of Conservative Dentistry, Faculty of Dentistry, Universitas Padjadjaran, Bandung, West Java, Indonesia | 3Department Oral Maxillofacial Surgery and Oral Diagnosis, Kulliyyah of Dentistry International Islamic University, Malaysia, Kuantan, Malaysia | 4Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, West Java, Indonesia Correspondence: Anna Muryani ([anna.muryani@unpad.ac.id](anna.muryani@unpad.ac.id)) Received: 14 June 2025 | Revised: 20 November 2025 | Accepted: 1 December 2025 Funding: Universitas Padjadjaran Keywords: access cavity preparation | cobalt‐chromium | finite‐element analysis | Guided endodontics | sleeve materials | thermal control | titanium | zirconia ABSTRACT Purpose: Guided endodontics allows precise access in challenging cases such as calcified canals; however, drilling can generate temperature increases that risk damaging periradicular tissues. This study aimed to evaluate the influence of different sleeve materials—zirconia, cobalt‐chromium (CoCr), and titanium—on temperature changes during guided endodontic access using finite‐element analysis (FEA) . Materials and Methods: High‐resolution three‐dimensional (3D) models of a human central incisor and titanium sleeve were developed using micro‐computed tomography (micro‐CT), 3D Slicer, Meshmixer, and SolidWorks. FEA simulations were conducted in Abaqus under a 2° deviation and 700 rpm drilling, with thermal properties based on literature. Experimental validation employed thermocouples to determine the temperature changes under identical conditions. Results: Results showed that zirconia sleeves produced the lowest temperature elevation (< 10°C) with localized concentration, while CoCr and titanium allowed more even heat dissipation. Conclusion: Zirconia is an effective insulator due to its thermal conductivity properties. CoCr has emerged as a promising alternative to titanium, offering more favorable thermal and mechanical characteristics. 1 | Introduction Guided endodontics has evolved as a novel technology for precisely finding and treating hardened root canals. In static guided procedures, computer‐generated, three‐dimensional (3D)‐printed surgical templates guide the drill along a predetermined trajectory into the pulp chamber. Clinical studies demonstrate that guided access significantly enhances canal detection and conserves tooth structure: for instance, one in vitro study revealed that guided templates facilitated canal identification in 91.7% of teeth, compared to merely 41.7% with the traditional freehand technique, while excising approximately 9.8 mm³ of dentin versus 49.9 mm³ through freehand preparation (Bansal et al. 2025; Connert et al. 2022, 2019; Muryani et al. 2025) . These findings suggest that guided endodontics enhances the predictability and minimally invasive nature of root canal therapy, generally irrespective of the operator's expertise. A guide sleeve is a cylindrical insert within the surgical template that supports and directs the bur during guided implant osteotomy (Kulinkovych‐Levchuk et al. 2022; Kim et al. 2021; This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2026 The Author(s) . Clinical and Experimental Dental Research published by John Wiley & Sons Ltd. Clinical and Experimental Dental Research, 2026; 12:e70260 1 of 11 [https://doi.org/10.1002/cre2.70260](https://doi.org/10.

FAQs

What problem does guided endodontics introduce in calcified cases?

Guided endodontics improves precise access, but drilling during access can generate temperature increases that may risk damage to periradicular tissues.

Which sleeve materials were compared for their thermal effects?

The study compared zirconia, cobalt-chromium (CoCr), and titanium sleeve materials and evaluated their influence on temperature changes during guided access.

How were temperature changes evaluated in the study?

Temperature changes were assessed using finite-element analysis based on 3D models and validated experimentally using thermocouples under identical drilling conditions.

Sep 30, 2026

Uploaded by Alex Sinclair