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치근단 역충전용 포틀랜드 시멘트 신복합재료의 물리적 성질 고찰

Physical properties of novel composite using Portland cement for retro-filling material

박정길|김현철|허복|조옥인|염지완|이상진
대한치과보존학회 (Korean Academy Of Conservative Dentistry)|2010.11|Restorative Dentistry and Endodontics|제35권 제6호|pp. 445-454

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참고문헌

키워드

경화시간; 방사선불투과도; 에폭시 레진; 역충전; 포틀랜드 시멘트; MTAEpoxy resin; MTA; Portland cement; Radio-opacity; Retro-filling; Setting time
주제분류치의학

초록

연구목적: 이 연구의 목적은 새로운 근단 역충전 재료를 개발하기 위해 MTA, MTA와 AH-plus 혼합물 (AMTA), 그리고실험적 개발재료인 Portland cement-Epoxy resin composite (EPPC)의 미세 누출 및 물리적인 성질을 비교하는 것이다. 연구 재료 및 방법: 발거 치아 49개를 근관 성형하고 gutta-percha와 sealer로 충전하였다. 각 치아의 치근을 근단부 3 mm 에서 절단하고 3 mm 깊이의 역충전 와동을 형성하였다. 15개씩 무작위로 분류한 치근을 세 군으로 나누어 각각 MTA,AMTA, EPPC로 충전하였고 네 개의 치근은 대조군으로 사용하였다. 각 군의 재료로 역충전이 완료된 모든 실험군을 젖은거즈로 덮고 24시간 동안 경화시켰다. 경화 후 72시간 동안 1% methylene blue 염색액에 담근 후, 치근단을 수직 절단하여 사진을 촬영하고 미세 누출을 평가하였다. Vicat apparatus를 사용하여 실험군 별로 경화시간을 측정하였으며, aluminum step wedge를 사용한 디지털 방사선 사진을 촬영하여 각 군의 방사선 불투과도를 평가하였다. 미세누출과 경화시간에 대해 각 군간의 차이를 일원배치분산분석 및 Scheffe 사후 검증으로 유의수준 95%에서 평가하였다. 결과: AMTA와 EPPC는 MTA군에 비해 적은 미세누출량을 보였다 (p < 0.05). AMTA는 가장 높은 방사선 불투과도를 보였으며 개발 재료인 EPPC군은 5 mm aluminum 두께의 방사선 불투과도를 보였다. MTA가 가장 긴 경화시간을 나타낸반면 EPPC군은 다른 군에 비해 초기경화와 최종경화 모두 가장 짧은 경화시간을 나타냈다 (p < 0.05). 결론: 이 연구 조건하에서, 신개발 재료인 EPPC는 치근단 역충전 재료로서 기존의 MTA보다 양호한 밀폐능력과 방사선 불투과성 및 짧은 경화시간 등의 역충전 재료로서 적절한 물리적 성질을 가진 것으로 보인다.

Abstract

Department of Conservative Dentistry, Pusan National University School of Dentistry, Yangsan, Korea Objectives: The aim of this study was to compare apical sealing ability and physical properties of MTA,MTA - AH-plus mixture (AMTA) and experimental Portland cement - Epoxy resin mixture (EPPC) for a development of a novel retro-filling material. Materials and Methods: Forty-nine extracted roots were instrumented and filled with gutta-percha. Apical root was resected at 3 mm and the retro-filling cavity was prepared for 3 mm depth. Roots were randomly divided into 3 groups of 15 roots each. The retro-filling was done using MTA, AMTA, and EPPC as the groups divided. Four roots were used as control groups. After setting in humid condition for 24 hours, the roots were immersed in 1% methylene blue dye solution for 72 hours to test the apical leakage. After immersion, the roots were vertically sectioned and photos were taken to evaluate microleakage. Setting times were measured with Vicat apparatus and digital radiographs were taken to evaluate aluminum equivalent thickness using aluminum step wedge. The results of microleakage and setting time were compared between groups using one-way ANOVA and Scheffe’s post-hoc comparison at the significance level of 95%. Results: AMTA and EPPC showed less microleakage than MTA group (p < 0.05). AMTA showed the highest radio-opacity than other groups and the novel EPPC showed 5 mm aluminum thickness radio-opacity. EPPC showed the shortest initial and final setting times than other groups while the MTA showed the longest (p < 0.05). Conclusions: Under the condition of this study, the novel composite using Portland cement-Epoxy resin mixture may useful for retro-filling with the properties of favorable leakage resistance, radio-opacity and short setting time. [J Kor Acad Cons Dent 2010;35(6):445-452.]ABSTRACT

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관련 논문AI추천

MTA와 4-META/MMA & TBB레진 혼합 재료의 치근단 미세누출에 관한 연구고현정, 김미리, 김진철, 양원경대한치과보존학회 · Restorative Dentistry and Endodontics2009 · 제34권 제4호OrthoMTA, ProRoot MTA 그리고 Portland cement의 경화 팽창과 경화 시간 비교강지예, 김종수, 유승훈대한소아치과학회 · 대한소아치과학회지2011 · 제38권 제3호Evaluation of Sealing Effect and Working Time of Root Canal Filling MTA Materials권태엽, 김영진, 김현정, 김효진, 남순현대한소아치과학회 · 대한소아치과학회지2016 · 제43권 제2호Physical properties of a new resin-based root canal sealer in comparison with AH Plus Jet김진우, 박세희, 조경모, Myint Thu대한턱관절교합학회 · 구강회복응용과학지2017 · 제33권 제2호모조 근관의 크기와 충전 방법이 orthograde MTA apical plug의 미세누출에 미치는 영향허복, 김현철, 남득림, 박정길대한치과보존학회 · Restorative Dentistry and Endodontics2009 · 제34권 제3호Comparative analysis of physicochemical properties of root perforation sealer materialsAlvaro Henrique Borges, Fábio Luis Miranda Pedro, Matheus Coelho Bandeca, Maura Cristiane Gonçales Orçati Dorileo, Orlando Aguirre Guedes, Ricardo Dalla Villa대한치과보존학회 · Restorative Dentistry and Endodontics2014 · 제39권 제3호

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