Article Type
Original Article
Abstract
Objectives: This study evaluated the impact of various cavity preparation designs on fracture resistance of CAD/CAM ceramic inlays and onlays.
Materials and methods: Forty-eight teeth were randomly assigned to six groups (n=8): (group A) inlays with 75% width of the inter-cuspal distance (ICD, buccal cusp tip-to-palatal cusp tip), (group B) inlays with 100% width of the ICD, (Group C) onlays that had a palatal cusp reduction of 2.0 mm (functional cusp) and 75% width of ICD, (Group D) had a palatal cusp reduction of 2.0 mm (functional cusp) with 100% width of ICD,(Group E) had a palatal cusp reduction of 2.0 mm (functional cusp) and a buccal cusp reduction of 1.5mm (non-functional cusp) and 75% width of ICD, and (Group F) had palatal cusp reduction of 2.0 mm (functional cusp) and had buccal cusp reduction of 1.5mm (non-functional cusp) and 100% width of ICD. The fracture resistance of each group was measured using a universal testing machine. Data were statistically analyzed using the Shapiro-Wilk, one-way ANOVA, and post-hoc Tukey tests.
Results: One-way ANOVA revealed statistically non-significant differences among the tested groups at (p
Conclusions: The various types of preparation designs had no significant difference in fracture resistance except for inlays with 75% width of ICD.
Keywords
Fracture resistance; CAD/CAM; Inlays; Ceramic; Onlays
How to Cite This Article
Saleem N , Elkaffas A , Ali A , Mahmoud S .
Do different Cavity Preparation Designs Influence Fracture Resistance of CAD/CAM Fabricated Ceramic Inlay and Onlay?.
Mans J Dent.
2023;
11(2):
107-114.
Available at:
https://doi.org/10.61793/2812-5479.1121
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
