Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth

Abdul Rahim, Noor Fatiha and Alawi, Rabihah and Ariffin, Azirrawani and Abd Rahman, Normastura and Abdul Muttlib, Nor Aidaniza (2025) Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth. Scientific Reports, 15 (1). pp. 1-14. E-ISSN 2045-2322

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Abstract

Abstract Post plays a crucial role in reinforcing final restoration in endodontically treated teeth (ETT). The appropriate selection of the post system is crucial for enhancing the clinical success of the restored tooth. This study aims to evaluate the adaptation, fracture resistance, and fracture patterns of ETT restored with different post systems, specifically zirconia posts, cast metal posts (CMP), and anatomically customised fibre-reinforced composite (FRC) posts. Twenty-four human premolars were randomly allocated into four groups. The teeth were root canal treated and prepared to receive zirconia, CMP, and anatomically customised FRC posts. All the samples were subjected to adaptation evaluation, fracture resistance test, and fracture pattern analysis. One-way ANOVA showed a statistically significant difference in mean adaptation between the groups (p= 0.001). Post-hoc Bonferroni analysis reported a significant difference in fracture resistance in zirconia and control (p = 0.001), CMP and FRC (p < 0.001), and FRC and control. The categorical analysis of fracture patterns revealed no statistically significant differences among the zirconia, CMP, and FRC post systems. Zirconia posts show lower adaptation than CMP and FRC posts. However, their fracture resistance is comparable to CMPs and FRCs. Fracture patterns were generally consistent across the different post systems; however, the control group exhibited a significantly different pattern, highlighting the influence of post presence on fracture behaviour.

Item Type:	Article (Journal)
Uncontrolled Keywords:	CAD-CAM post; Endodontically treated teeth; Post and core; Zirconia post; Milled zirconia post; Medicine; Science
Subjects:	R Medicine > RK Dentistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Dentistry > Department of Prosthodontics Kulliyyah of Dentistry
Depositing User:	Dr Noor Fatiha Abdul Rahim
Date Deposited:	27 Aug 2025 10:04
Last Modified:	27 Aug 2025 10:04
URI:	http://irep.iium.edu.my/id/eprint/122866

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