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Open AccessArticle

Effect of Surface Treatments on Shear Bond Strength of Polyetheretherketone to Autopolymerizing Resin

Department of Prosthodontics & Oral rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8504, Japan
Author to whom correspondence should be addressed.
Dent. J. 2019, 7(3), 82;
Received: 6 July 2019 / Revised: 24 July 2019 / Accepted: 24 July 2019 / Published: 1 August 2019
PDF [5490 KB, uploaded 1 August 2019]


These days, new prosthodontic materials are appearing with the development of digitalization. Among these, the use of polyetheretherketone (PEEK) as the clasp of removable partial dentures has been proposed. The adhesive strength between the PEEK and acrylic resin influences the probability of denture fracture. To investigate the effect of PEEK surface treatments on the shear bond strength to acrylic resin, five surface treatment conditions of PEEK were analyzed: 1. no treatment; 2. ceramic primer application; 3. Al2O3 sandblasting; 4. Rocatec; and 5. Rocatec with ceramic primer application, comparing with a metal primer-treated Co-Cr alloy. Two kinds of autopolymerizing resin (Unifast II and Palapress Vario) were used as bonding materials. The specimens were evaluated to determine the bond strength. Rocatec treatment with ceramic primer application yielded the highest bond strengths (12.71 MPa and 15.32 MPa, respectively, for Unifast II and Palapress Vario). When compared to a metal primer-treated Co-Cr alloy, the bond strength of PEEK to Unifast II was similar, whereas it was about 60% of that to Palapress Vario. Rocatec treatment, combined with ceramic primer, showed the highest bond strength of PEEK to acrylic resin. Treatment of PEEK will enable its use as the clasp of removable dentures and the fixation of PEEK prostheses. View Full-Text
Keywords: polyetheretherketone (PEEK); shear bond strength; acrylic resin; clasp retainer polyetheretherketone (PEEK); shear bond strength; acrylic resin; clasp retainer

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Kurahashi, K.; Matsuda, T.; Ishida, Y.; Ichikawa, T. Effect of Surface Treatments on Shear Bond Strength of Polyetheretherketone to Autopolymerizing Resin. Dent. J. 2019, 7, 82.

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