Abuhammoud, Salahaldeen; Emtier, Banan; Fu, Chin-Chuan; Rojas-Rueda, Silvia; Jurado, Carlos A; Afrashtehfar, Kelvin I (2024). Fracture resistance of CAD/CAM milled versus direct hand-made interim laminate veneers. The Saudi dental journal, 36(6), pp. 920-925. Elsevier 10.1016/j.sdentj.2024.04.002
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BACKGROUND
Comparative studies of interim veneer restorations crafted using subtractive computer-aided manufacturing (s-CAM) milling technology and traditional direct hand-made approaches are needed.
PURPOSE
This comparative in vitro study evaluated the fracture resistance of two types of provisional veneer restorations for maxillary central incisors: milled (s-CAM) and traditional direct hand-made bis-acryl veneers.
MATERIALS AND METHODS
Fifty maxillary right central incisor veneers (25 specimens per group) were fabricated and divided according to the fabrication method: (1) s-CAM milled (Structure CAD, VOCO Dental); and (2) hand-made (Protemp Plus, 3M). The restorations were cemented onto 3D-printed resin dies using temporary cement and subjected to 1000 cycles of thermal cycling between 5° and 55 °C. These restorations subsequently were subjected to compressive loading until fracture occurred. Images of the fractured samples were captured using a scanning electron microscope (SEM). Statistical analysis was performed using the one-way ANOVA test and the Mann-Whitney U test.
RESULTS
Significant differences (p < 0.001) in the fracture resistance were observed between the two groups. s-CAM milled interim veneers displayed higher fracture resistance values (439.60 ± 26 N) compared to the traditional method (149.15 ± 10 N).
CONCLUSION
The manufacturing method significantly influences the fracture resistance of interim veneer restorations. s-CAM interim laminate veneer restorations for maxillary central incisors exhibit a fracture resistance superior to that of the traditional method using bis-acryl.Clinical relevanceClinicians should consider CAD/CAM milled veneers for scenarios demanding long-term interim restoration and the withstanding of high occlusal forces.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology |
UniBE Contributor: |
Afrashtehfar, Kelvin Ian |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1013-9052 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
18 Jun 2024 11:04 |
Last Modified: |
19 Jun 2024 13:28 |
Publisher DOI: |
10.1016/j.sdentj.2024.04.002 |
PubMed ID: |
38883892 |
Uncontrolled Keywords: |
Aesthetic dentistry CAD/CAM systems Cosmetic dentistry Dental materials Dental prosthesis Dental prosthesis design Dental restorations Dental veneers Direct restorations Fracture resistance Indirect restorations Interim restorations Laminate veneers Partial restorations Provisional restorations Temporary restorations |
BORIS DOI: |
10.48350/197902 |
URI: |
https://boris.unibe.ch/id/eprint/197902 |
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