Korean J Dent Mater.  2018 Mar;45(1):45-56. 10.14815/kjdm.2018.45.1.45.

The evaluation of the shear bond strength between various Hybrid CAD/CAM restorative materials and repairing composite resins

Affiliations
  • 1Department of Dental Biomaterials and the institute of Biomaterials·Implant, College of Dentistry, Wonwkang University, Iksan, Korea. shoh@wku.ac.kr
  • 2Dental Laboratory, Wonkwang Dental Hospital, Iksan, Korea.
  • 3Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Korea.

Abstract

The purpose of this study was to evaluate the shear bond strengths between various hybrid computer-aided design (CAD)/computer-aided manufacturing (CAM) restorative materials and repairing resin. Two resin network-based hybrid (Lava Ultimate and Polyglass), one ceramic framework-based hybrid (Enamic), and one zirconia (Zenotec Zr bridge) CAD/CAM restorative materials were used in this study. The shear bond strength test and failure modes of four experimental groups designated LUS (Lava Ultimate), ENA (Enamic), PGB (Polyglass), and ZBR (zirconia control group) were characterized in this study. The hybrid CAD/CAM restorative materials showed stronger shear bond strengths in the sequence of PGB, LUS, and ENA (P < 0.05). The shear bond strengths of PGB and LUS groups showed significantly higher than those of ZBR (P < 0.05), while ENA did not show any significant difference from ZBR (P < 0.05). The PEG and LUS groups mostly exhibited cohesive failure, but the ENA and ZBR groups predominantly showed adhesive failure. Therefore, resin network-based hybrid CAD/CAM restorative materials such as Lava Ultimate and Polyglass should be more useful for intra-oral repairs.

Keyword

Hybrid CAD/CAM restorative materials; Repairing Resin; Zirconia; Shear bond strength; Intra-oral repair

MeSH Terms

Adhesives
Ceramics
Composite Resins*
Computer-Aided Design
Prostaglandins B
Adhesives
Composite Resins
Prostaglandins B
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