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KMID : 1004520200360010001
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Journal of Dental Rehabilitation and Applied Science
2020 Volume.36 No. 1 p.1 ~ p.11
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Comparative study of surface modification on bond strength of polyetherketoneketone adhesively bonded to resins for temporary restoration
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Hong Mun-Gi
Shin Soo-Yeon
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Abstract
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Purpose: The purpose was to compare shear bond strength (SBS) of three types of resin for temporary restoration to polyether- ketoneketone (PEKK) depending on surface modification.
Materials and Methods: Sixty disks made from PEKK were air-abraded with 110 μm alumina particles (Cobra, Renfert GmbH, Hilzinge, Germany) and thirty specimens were divided into two groups each: PEKK without Visio.link (Bredent, Senden, Germany)(U) and with Visio.link (P). Resins for temporary restoration (polymethylmethac- rylate; PMMA, polyethylmethacrylate; PEMA, bis-acryl composite resin) in the shape of a square with one side 3.2 mm were bonded to PEKK twenty respectively and classified into six groups (UM, UE, UC, PM, PE and PC). All specimens were stored in distilled water at 37°C for 24 hours. SBS of each group was measured at a crosshead speed of 2 mm/min in universal testing machine. SBS was compared using one-way ANOVA and a Tukey HSD test (P = 0.05).
Results: Group UM and group UE showed a significant difference in SBS with group UC (P < 0.05). Group PC showed a significant increase in SBS than group UC (P < 0.05).
Conclusion: It is recom- mended to apply Visio.link to PEKK for adhering bis-acrylic composite resin, but not for PMMA and PEMA in clinical practice.
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KEYWORD
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polyetherketoneketone, polymethylmethacrylate, polyethylmethacrylate, bis-acryl composite resin, shear bond strength
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