Accéder directement au contenu Accéder directement à la navigation
Nouvelle interface
Article dans une revue

Behavior of CAD/CAM ceramic veneers under stress: A 3D holographic study

Abstract : Objectives Ceramic veneers restorations may undergo damages, such as cracks, fractures, or debonding. Full-field measurements must be carried out in order to visualize and analyze the strain fields. This paper demonstrates that digital holography permits to investigate the mechanical behavior under stress of a natural incisor and a natural incisor reconstructed with CAD/CAM ceramic veneer. Methods The facial surface of a maxillary central incisor is prepared to receive a monolithic ceramic reconstruction manufactured using a chairside computer-aided design and computer aided manufacturing (CAD/CAM) system (Cerec AC® system, Sirona Dental System®, Bensheim, Germany). One incisor is kept intact for comparison. The samples are sectioned longitudinally to obtain a planar observation of the region of interest. A mechanical indentation head and digital holographic set-ups permit a full-field, contact-less and single-shot measurement of the three-dimensional displacement fields at the surface of the tooth sample when subjected to load. Stain fields are then estimated and comparison of the results between two samples can be carried out. Results 3D displacement, fields and strain fields are measured and highlight the behavior of the region of interest in three directions of space for the ceramic veneer and the natural incisor. The strain maps reveal the local behavior, especially the concentration or the sudden change in strain. The transition zones are clearly observed, particularly for the veneered sample. Conclusion Digital holography highlights the localization of stress concentration zones in regions of interest and yields comparative analysis between samples with different tooth preparations. Significance holography permits to visualize and compare the mechanical response of the ceramic veneer and natural tooth. This helps choosing the mechanical properties of the bonding interface.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.mines-ales.fr/hal-03176007
Contributeur : Administrateur IMT - Mines Alès Connectez-vous pour contacter le contributeur
Soumis le : jeudi 3 juin 2021 - 14:51:25
Dernière modification le : mardi 27 septembre 2022 - 13:20:58
Archivage à long terme le : : samedi 4 septembre 2021 - 18:50:02

Fichier

behavior-of-cad-cam-ceramic-ve...
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

J.-C. Durand, Pierre Slangen, Silvio Montrésor, A. Desoutter, O.Y. Solieman, et al.. Behavior of CAD/CAM ceramic veneers under stress: A 3D holographic study. Journal of the mechanical behavior of biomedical materials, 2021, 118, pp.104436. ⟨10.1016/j.jmbbm.2021.104436⟩. ⟨hal-03176007⟩

Partager

Métriques

Consultations de la notice

153

Téléchargements de fichiers

104