Mechanical properties of composite resin blocks for CAD/CAM

Sasipin LAUVAHUTANON; Hidekazu TAKAHASHI; Maho SHIOZAWA; Naohiko IWASAKI; Yuya ASAKAWA; Meiko OKI; Werner J. FINGER; Mansuang ARKSORNNUKIT

doi:10.4012/dmj.2014-208

Original Paper

Mechanical properties of composite resin blocks for CAD/CAM

Sasipin LAUVAHUTANON, Hidekazu TAKAHASHI, Maho SHIOZAWA, Naohiko IWASAKI, Yuya ASAKAWA, Meiko OKI, Werner J. FINGER, Mansuang ARKSORNNUKIT

Author information

Sasipin LAUVAHUTANON
Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Course for Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University
Hidekazu TAKAHASHI
Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Course for Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
Maho SHIOZAWA
Removable Partial Prosthodontics, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
Naohiko IWASAKI
Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Course for Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
Yuya ASAKAWA
Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Course for Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
Meiko OKI
Comprehensive Oral Health Engineering, Department of Fundamental Oral Health Engineering, Course for Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
Werner J. FINGER
Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry
Mansuang ARKSORNNUKIT
Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University

Keywords: Composite resin blocks, CAD/CAM, Flexural strength, Vickers hardness, Elemental composition

JOURNAL FREE ACCESS

2014 Volume 33 Issue 5 Pages 705-710

DOI https://doi.org/10.4012/dmj.2014-208

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Abstract

This study compared commercial composite resin blocks with one ceramic block for use in computer-aided design/computer aided manufacturing (CAD/CAM). Four composite resins, one composite ceramic, and one feldspar-ceramic block were investigated. Flexural strength (FS), flexural modulus (FM), and Vickers hardness (VH) were determined under three conditions: dry storage; immersion in water at 37°C for 7 days; and immersion in water at 37°C for 7 days followed by 10,000 thermocycles. After dry storage, FS ranged from 127 to 242 MPa, FM from 9.6 to 51.5 GPa, and VH from 64 to 455. Two-way ANOVA was performed for FS, FM and VH followed by Tukey’s multiple comparison (α<0.05). Results demonstrated that the materials degraded after water immersion and thermocycling, but their properties were within the acceptable range for fabrication of single restorations according to the ISO standard for ceramics (ISO 6872:2008).

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