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Updated: Jul 2, 2026
Dynamic Navigation in Endodontics: Guided Access Cavity Preparation by Means of a Miniaturized Navigation System
Published on: May 5, 2022
Impact of Various Sleeve Materials on Temperature Variations During Guided Endodontic Access Cavity Preparation
Anna Muryani1,2, Wandi Prasetia2, Dudi Aripin2
1Faculty of Medicine, Universitas Padjadjaran, Bandung, West Java, Indonesia.
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.
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