Evaluation of shear bond strength between PEEK and resin-based luting material

Publication date: Available online 21 September 2017
Source:Journal of Oral Biosciences
Author(s): Hiroki Tsuka, Koji Morita, Kan Kato, Hiromichi Kawano, Hitoshi Abekura, Kazuhiro Tsuga
ObjectivesThe purpose of this study was to evaluate the bond strength of polyetheretherketone (PEEK) to resin-based luting material.MethodsEighty PEEK specimens were randomly divided into two groups (n = 40/group): no treatment and sandblasting. Each of the 40 specimens of dental gold-silver-palladium alloy (PALLAZ12-n; Yamamoto Precious Metal Co., Ltd., Osaka, Japan), zirconia (Aadva Zirconia; GC, Tokyo, Japan), and hybrid composite resin (CERASMART; GC, Tokyo, Japan) was used as a control material for PEEK. Each group was divided into four subgroups (n = 10) for the different resin-based luting materials: Panavia^® V5 (Kuraray Medical, Tokyo, Japan), RelyX^TM Ultimate Resin Cement (3M ESPE, St Paul, MN, USA), G-CEM Link Force (GC, Tokyo, Japan), and Super-Bond C&B (Sun Medical, Siga, Japan). The resin-based luting materials were bonded onto the specimens. All specimens were stored in distilled water at 37°C for 24h. Bond strength was measured with a shear test, and failure modes were assessed by stereomicroscopy. The surfaces were observed by scanning electron microscopy after the various pretreatments.ResultsCompared with the control group, the PEEK group showed a significantly lower (p < 0.05) shear bond strength for most of the specimens. Among PEEK groups, the most frequent failure mode was adhesive failure between the material and the resin-based luting material.ConclusionsThis study found that the bond strength between PEEK and resin-based luting materials was not adequate for clinical use of PEEK.



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