Polyetherketoneketone (PEKK)과 다양한 의치상용 전장 레진 간의 인장결합강도에 관한 연구 = A study of the tensile bond strength between Polyetherketoneketone (PEKK) and various veneered denture base resin

국문 초록 (Abstract)

목적: 본 연구는 의치상용 레진의 전장방법이 polyetherketoneketone (PEKK)과의 인장결합강도에 미치는 영향을 알아보고자 하였다.
재료 및 방법: 총 80개의 PEKK 시편을 T자 형태로 절삭 가공하고, airborne-particle abrasion 처리 후 전처리제(Visio.link)를 도포하였다. 전장 방법에 따라 4개의 군(n = 20)으로 나누어, 충전형 광중합형 복합레진(SR Adoro), 유동형 광중합형 복합레진(Crea.lign), 열중합형 의치상용 레진(Vertex RS), 자가중합형 의치상용 레진(ProBase Cold)으로 전장하였다. 각 군은 인공시효처리 여부에 따라 2가지 하위 군(n = 10)으로 나누었다. 만능시험기를 이용해 인장결합강도 측정하고 현미경으로 파절단면을 관찰하였다. 통계적 검증을 위해 이원 분산분석 및 Tukey’s HSD 사후 검정을 시행하였다(α = .05).
결과: 인공시효처리와 레진 전장방법은 인장결합강도에 통계적으로 유의한 영향을 주었다(P < .001). 인공시효처리 전과 후 모두 유동형 광중합형 복합레진 군에서 가장 높은 값을 보였고, 열중합형 레진 군에서 가장 낮은 값을 보였다(P < .05). 파절 단면은 군에 따라 혼합 파절과 계면 파절이 혼재되어 나타났다.
결론: 레진의 전장 방식은 PEKK과의 인장결합강도에 영향을 줄 수 있으며, 인공시효처리는 인장결합강도를 감소시킨다.

다국어 초록 (Multilingual 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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