Restorative Dentistry and Endodontics

  • 제35권5호
  • /
  • Pages.344-352
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  • 2010
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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Glass ionomer cement와 혼합한 mineral trioxide aggregate의 물리적 및 화학적 성질

Physical and chemical properties of experimental mixture of mineral trioxide aggregate and glass ionomer cement

  • 정유나 (전남대학교치의학전문대학원, 보존학교실) ;
  • 양소영 (전남대학교치의학전문대학원, 해부학교실) ;
  • 박범전 (전라남도보건환경연구원) ;
  • 박영준 (전남대학교치의학전문대학원, 재료학교실) ;
  • 황윤찬 (전남대학교치의학전문대학원, 보존학교실) ;
  • 황인남 (전남대학교치의학전문대학원, 보존학교실) ;
  • 오원만 (전남대학교치의학전문대학원, 보존학교실)
  • Jeong, Yu-Na (Dept. of Conservative Dentistry, Chonnam National University School of Dentistry) ;
  • Yang, So-Young (Dept. of Oral Anatomy, Chonnam National University School of Dentistry) ;
  • Park, Bum-Jun (Jeollanam-do institute of Health and Environment) ;
  • Park, Yeong-Joon (Dept. of Conservative Dentistry, Chonnam National University School of Dentistry) ;
  • Hwang, Yun-Chan (Dept. of Conservative Dentistry, Chonnam National University School of Dentistry) ;
  • Hwang, In-Nam (Dept. of Conservative Dentistry, Chonnam National University School of Dentistry) ;
  • Oh, Won-Mann (Dept. of Conservative Dentistry, Chonnam National University School of Dentistry)
  • 투고 : 2010.07.02
  • 심사 : 2010.08.05
  • 발행 : 2010.09.30
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초록

연구목적: 본 연구의 목적은 glass ionomer cement (GIC)와 혼합한 mineral trioxide aggregate (MTA)의 경화 시간, 압축 강도, 용해도, pH를 평가하고 이것을 MTA, GIC, IRM, SuperEBA와 비교하는 것이다. 연구 재료 및 방법: 경화 시간과 압축 강도는 ISO 9917, 그리고 용해도는 ISO 6876 기준에 따라 측정하였다. pH는 고체시편 전용 전극이 연결된 pH meter를 이용하여 측정하였다. 결과: GIC와 혼합한 MTA의 경화시간은 MTA보다 유의하게 짧았으며 압축 강도는 7일간 모든 시점에서 다른 재료보다 유의하게 낮았다. GIC와 혼합한 MTA 중에서 1 : 1과 2 : 1 시편의 용해도는 다른 실험군보다 유의하게 높았다. 또한 GIC와 혼합한 MTA의 pH는 혼합직후 2-4의 범위에서 1일 후 5-7 사이로 증가하였다. 결론: GIC와 혼합한 MTA의 경화시간은 MTA에 비해 개선되었으나 압축강도 및 pH와 같은 다른 성질들은 MTA에 비해 오히려 열등한 것으로 밝혀졌다. 임상적 사용이 가능하려면, MTA의 기존 장점을 저해하지 않으면서 단점을 개선하기 위한 적절한 혼합비를 찾아내고 생체친화성을 평가하는 추가적인 연구가 필수적이다.

Objectives: The purpose of this study was to determine the setting time, compressive strength, solubility, and pH of mineral trioxide aggregate (MTA) mixed with glass ionomer cement (GIC) and to compare these properties with those of MTA, GIC, IRM, and SuperEBA. Materials and Methods: Setting time, compressive strength, and solubility were determined according to the ISO 9917 or 6876 method. The pH of the test materials was determined using a pH meter with specified electrode for solid specimen. Results: The setting time of MTA mixed with GIC was significantly shorter than that of MTA. Compressive strength of MTA mixed with GIC was significantly lower than that of other materials at all time points for 7 days. Solubility of 1 : 1 and 2 : 1 specimen from MTA mixed with GIC was significantly higher than that of other materials. Solubility of 1 : 2 specimen was similar to that of MTA. The pH of MTA mixed with GIC was 2-4 immediately after mixing and increased to 5-7 after 1 day. Conclusions: The setting time of MTA mixed with GIC was improved compared with MTA. However, other properties such as compressive strength and pH proved to be inferior to those of MTA. To be clinically feasible, further investigation is necessary to find the proper mixing ratio in order to improve the drawbacks of MTA without impairing the pre-existing advantages and to assess the biocompatibility.

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