연마 방법에 따른 flowable bulk fill 복합레진의 표면 거칠기
Surface roughness of flowable bulk fill composite resin by different polishing protocols
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초록
"목적: 표층 적용이 가능한 full body bulk fill flowable 복합레진을 일반 복합레진과 동일하게 연마했을 때의 표면 특성을평가하고자 하였다. 연구 재료 및 방법: 일반 복합레진인 Filtek Supreme Flowable과 3종의 full body bulk fill flowable 복합레진인 Metafil Bulk Fill, Charisma Bulk Flow ONE, G-aenial BULK Injectable을 사용하였다. 시편은 SoflexTM Extra-thin, One Gloss midi, One Gloss midi + Jiffy brush의 세 가지 방법으로 연마하였고, 공초점레이저현미경과 주사전자현미경을 이용해표면 조도 및 형상을 분석하였다. 통계는 이원배치 분산분석 및 Scheffe’s test를 시행하였다. 결과: 복합레진 종류와 연마 방법 간 상호작용은 없었으며, Metafil Bulk Fill이 가장 거친 표면을 나타냈고, 연마 방법에서는 SoflexTM Extra-thin 사용군이 가장 매끈한 표면을 보였다(P < 0.05). 결론: Full body bulk fill 복합레진은 복합레진의 종류와 연마 방법에 따라 표면 거칠기가 차이날 수 있으므로 적절한 제품과 연마 방법을 선택하는 것이 중요하다."
Abstract
"Purpose: This study aimed to evaluate the surface characteristics of full body bulk fill flowable composite resins when polished using the same protocols applied to conventional flowable composite resins. Materials and Methods: One conventional composite resin (Filtek Supreme Flowable) and three full body bulk fill flowable composite resins (Metafil Bulk Fill, Charisma Bulk Flow ONE, G-aenial BULK Injectable) were tested. Specimens were polished using three methods: Soflex™ Extra-thin, One Gloss midi, and One Gloss midi combined with Jiffy brush. Surface roughness (Sa) was measured using a confocal laser scanning microscope, and surface morphology was examined under a scanning electron microscope. Statistical analysis was performed using two-way ANOVA and Scheffé’s test. Results: No interaction was found between the composite resin type and polishing method. Metafil Bulk Fill showed the highest surface roughness, while specimens polished with Soflex™ Extra-thin showed the smoothest surfaces (P < 0.05). Conclusion: The surface roughness of full body bulk fill composite resins varies depending on the resin type and polishing method. Therefore, understanding each product’s characteristics and selecting an appropriate polishing technique is essential for achieving a clinically acceptable surface finish and long-term success of the restoration."