다양한 접착 시스템 및 포스트의 표면 처리가 섬유 강화 포스트의 접착 강도에 미치는 영향
Effect of different adhesive systems and post surface treatments on the push-out bond strengths of fiber-reinforced post
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목적: 본 연구에서는 자가-접착 레진 시멘트의 접착 강도에 포스트의 표면 처리와 접착 시스템이 미치는 영향을 조사하고자 하였다. 재료 및 방법: 비슷한 치근 길이를 가진 48개의 사람 상악 단근치를 사용하여 160개의 시편을 제작하고 접착 시스템에 따라 4개의 군으로 분류하였다(no adhesive, Adper Single Bond 2, Clearfil SE Bond, Clearfil S3). 각 군은 포스트 표면 처리 방식에 따라 다시 4개의 군으로 세분하였다(no treatment, sandblast, silane, sandblast and silane). 포스트를(Parapost Fiber White) Rely X Unicem을 사용하여 접착하였다. 치아를 장축에 수직으로 1 mm 두께로 절단 하였다. Push-out test를 0.5 mm/분의 crosshead speed로 시행하였다. 2-way ANOVA, 1-way ANOVA 검정을 시행하였고 Tukey test를 통한 사후 검정을 시행하였다(α=0.05). 결과: Tukey test를 통한 사후 검정에서 접착 시스템에 따른 차이가 나타났다. Clearfil SE Bond가 가장 높은 접착 강도를 나타내었다. 결론: 상아질에 Clearfil SE bond를 사용하고 포스트를 실란 처리시 가장 높은 접착 강도를 나타내었다.
Abstract
Purpose: The purpose of this study was to evaluate the push-out bond strength of glass-fiber post cemented with different adhesive systems and surface treatments. Materials and methods: 160 tooth samples made from 48 human maxillary single-rooted teeth with similar root length were divided into 4 groups according to the adhesive system (no adhesive, Adper Single Bond 2, Clearfil SE Bond, Clearfil S3). Each group had 4 subgroups according to the post surface treatment methods (no treatment, sandblast, silane, sandblast and silane). Posts (Parapost Fiber White) were cemented with Rely X Unicem. The teeth were sectioned perpendicular to their long axis into 1-mm thick sections. The push-out tests was performed at a speed of 0.5 mm/min. The results were evaluated by 2-way ANOVA, 1-way ANOVA and multiple comparison procedures (Tukey test) (α=0.05). Results: Tukey test showed that the adhesive system significantly influenced the push-out strength. The Clearfil SE Bond group showed the highest value. Post surface treatments showed no significant effect. Conclusion: Bond strength of glass-fiber post cemented with self-adhesive resin cement using Clearfil SE Bond showed significantly higher values compared to other adhesive systems.
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