Next Article in Journal
Study of the Deformation by Compression of a Premolar with and Without Ceramic Restoration Using Speckle Optical Interferometry
Previous Article in Journal
Computational Pipeline for Anticancer Drug Repurposing via Dimensionality Reduction
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Applied Sciences
Volume 15
Issue 19
10.3390/app151910706
applsci-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Fracture Resistance of CAD/CAM Onlays Versus Direct Composite Repairs for Ceramic Crown Chipping

by
Mariona Rodeja-Vazquez
,
Oscar Figueras-Álvarez
*,
Alma Aschkar-Carretero
,
Cristina Corominas-Delgado
,
Santiago Costa-Palau
,
Josep Cabratosa-Termes
and
Francisco Real-Voltas
Department of Integrated Dentistry, Faculty of Dentistry, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2025, 15(19), 10706; https://doi.org/10.3390/app151910706
Submission received: 17 September 2025 / Revised: 30 September 2025 / Accepted: 30 September 2025 / Published: 3 October 2025
(This article belongs to the Special Issue Recent Development and Emerging Trends in Dental Implants)
Versions Notes

Featured Application

This study provides clinicians with experimental evidence supporting the use of CAD/CAM onlays and direct composite resin as reliable and conservative alternatives for the repair of fractured metal–ceramic crowns. The findings highlight practical applications in daily dental practice, demonstrating that these techniques can withstand posterior occlusal forces and may reduce the need for complete crown replacement.

Abstract

This in vitro study evaluated the fracture resistance of metal–ceramic crowns repaired with milled hybrid resin, printed hybrid resin, lithium disilicate, and direct composite resin. One hundred crowns were fabricated, fractured under controlled loading, and 80 with standardized defects were randomly assigned to four groups (n = 20). Repairs were performed using CAD/CAM onlays or direct composite, followed by compressive testing until fracture. Mean fracture resistance values ranged from 1858.95 N to 1997 N across all groups, exceeding typical posterior occlusal forces (700–900 N). No statistically significant differences were found among groups (p = 0.200). Most failures were cohesive. These results indicate that both digital (milled and printed) and direct techniques offer sufficient strength to serve as minimally invasive and cost-effective alternatives to full crown replacement. Although limited by the in vitro design, this study supports the applicability of modern repair approaches in daily practice.
Keywords: fracture resistance; CAD/CAM onlay repair; metal–ceramic crowns; ceramic chipping; direct composite restoration; in vitro study fracture resistance; CAD/CAM onlay repair; metal–ceramic crowns; ceramic chipping; direct composite restoration; in vitro study

Share and Cite

MDPI and ACS Style

Rodeja-Vazquez, M.; Figueras-Álvarez, O.; Aschkar-Carretero, A.; Corominas-Delgado, C.; Costa-Palau, S.; Cabratosa-Termes, J.; Real-Voltas, F. Fracture Resistance of CAD/CAM Onlays Versus Direct Composite Repairs for Ceramic Crown Chipping. Appl. Sci. 2025, 15, 10706. https://doi.org/10.3390/app151910706

AMA Style

Rodeja-Vazquez M, Figueras-Álvarez O, Aschkar-Carretero A, Corominas-Delgado C, Costa-Palau S, Cabratosa-Termes J, Real-Voltas F. Fracture Resistance of CAD/CAM Onlays Versus Direct Composite Repairs for Ceramic Crown Chipping. Applied Sciences. 2025; 15(19):10706. https://doi.org/10.3390/app151910706

Chicago/Turabian Style

Rodeja-Vazquez, Mariona, Oscar Figueras-Álvarez, Alma Aschkar-Carretero, Cristina Corominas-Delgado, Santiago Costa-Palau, Josep Cabratosa-Termes, and Francisco Real-Voltas. 2025. "Fracture Resistance of CAD/CAM Onlays Versus Direct Composite Repairs for Ceramic Crown Chipping" Applied Sciences 15, no. 19: 10706. https://doi.org/10.3390/app151910706

APA Style

Rodeja-Vazquez, M., Figueras-Álvarez, O., Aschkar-Carretero, A., Corominas-Delgado, C., Costa-Palau, S., Cabratosa-Termes, J., & Real-Voltas, F. (2025). Fracture Resistance of CAD/CAM Onlays Versus Direct Composite Repairs for Ceramic Crown Chipping. Applied Sciences, 15(19), 10706. https://doi.org/10.3390/app151910706

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop