J Korean Acad Prosthodont.
2022 Jul;60(3):231-238. 10.4047/jkap.2022.60.3.231.
A study of the tensile bond strength between Polyetherketoneketone (PEKK) and various veneered denture base resin
- Affiliations
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- 1Department of Prosthodontics, Institute of Oral Bio-Science, School of Dentistry, Jeonbuk National University, Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
- KMID: 2532256
- DOI: http://doi.org/10.4047/jkap.2022.60.3.231
Abstract
- Purpose
This study aimed to investigate the effect of different veneering methods on the tensile bond strength between polyetherketoneketone (PEKK) and denture base resins.
Materials and methods
A total of 80 PEKK T-shaped specimens were fabricated and the primer (Visio.link) was applied after airborne-particle abrasion with 110 µm alumina oxide powder. According to the veneering method, the specimens were divided into four groups (n = 20) to be veneered with the gingival colored packable photopolymerized composite resin (SR Adoro); flowable photopolymerized composite resin, (Crea.lign); heat-polymerized resin (Vertex); and self-polymerized resin (ProBase Cold). Each group was divided into two subgroups (n = 10) according to the artificial thermal aging. After the tensile bond strength measurement via universal testing machine, the fracture sections of all specimens were observed. Two-way ANOVA and Tukey’s HSD post hoc test were used for the statistical analysis (α = .05).
Results
The results of the two-way ANOVA showed statistically significant differences in the tensile bond strength according to the veneering method and artificial thermal aging of denture base resins (P<.001). The highest tensile bond strength showed in the packable photopolymerized resin group before and after the artificial thermal aging. The lowest tensile bond strength showed in the heat-polymerized resin group. The mixed and adhesive fracture showed in all groups.
Conclusion
The veneering method and artificial thermal aging can influence in the tensile bond strength between the resin and PEKK. The artificial thermal aging can reduce the tensile bond strength.
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