Fracture resistance of CAD/CAM milled versus direct hand-made interim laminate veneers

Salahaldeen Abuhammoud; Banan Emtier; Chin-Chuan Fu; Silvia Rojas-Rueda; Carlos A. Jurado; Kelvin I. Afrashtehfar

doi:10.1016/j.sdentj.2024.04.002

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Fracture resistance of CAD/CAM milled versus direct hand-made interim laminate veneers

Journal article

Open access

Fracture resistance of CAD/CAM milled versus direct hand-made interim laminate veneers

Salahaldeen Abuhammoud, Banan Emtier, Chin-Chuan Fu, Silvia Rojas-Rueda, Carlos A. Jurado and Kelvin I. Afrashtehfar

The Saudi dental journal, Vol.36(6), pp.920-925

06/01/2024

DOI: 10.1016/j.sdentj.2024.04.002

PMCID: PMC11178957

PMID: 38883892

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Abstract

Comparative studies of interim veneer restorations crafted using subtractive computer-aided manufacturing (s-CAM) milling technology and traditional direct hand-made approaches are needed. 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. 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. 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). 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 relevance Clinicians should consider CAD/CAM milled veneers for scenarios demanding long-term interim restoration and the withstanding of high occlusal forces.

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

Details

Title: Subtitle: Fracture resistance of CAD/CAM milled versus direct hand-made interim laminate veneers
Creators: Salahaldeen Abuhammoud - University of Iowa
Banan Emtier - University of Iowa
Chin-Chuan Fu - University of Alabama at Birmingham
Silvia Rojas-Rueda - Pontificia Universidad Javeriana
Carlos A. Jurado - University of Iowa
Kelvin I. Afrashtehfar - RWTH Aachen University
Resource Type: Journal article
Publication Details: The Saudi dental journal, Vol.36(6), pp.920-925
DOI: 10.1016/j.sdentj.2024.04.002
PMID: 38883892
PMCID: PMC11178957
NLM abbreviation: Saudi Dent J
ISSN: 1013-9052
eISSN: 1658-3558
Publisher: Elsevier B.V
Number of pages: 6
Language: English
Date published: 06/01/2024
Academic Unit: Dental Clinic Administration; Prosthodontics; Family Dentistry
Record Identifier: 9985143123202771

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