Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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A study on the water sorption and the effect of water sorption on micro-hardness of dual-cure resin cements

이원 중합 레진시멘트의 수분 흡착도와 수분 흡착에 따른 경도 변화 비교 연구

  • Choi, Su-Jeong (Department of Prosthodontics, School of Dentistry, Kyungpook National University) ;
  • Cho, Jin-Hyun (Department of Prosthodontics, School of Dentistry, Kyungpook National University) ;
  • Lee, Cheong-Hee (Department of Prosthodontics, School of Dentistry, Kyungpook National University)
  • 최수정 (경북대학교 치의학전문대학원 치과보철학교실) ;
  • 조진현 (경북대학교 치의학전문대학원 치과보철학교실) ;
  • 이청희 (경북대학교 치의학전문대학원 치과보철학교실)
  • Received : 2014.03.26
  • Accepted : 2014.05.01
  • Published : 2014.06.30
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Abstract

Purpose: This study examined the water sorption of commonly used dual-cure resin cements and compared the change in the micro-hardness among the cements. Materials and Methods: Five types of dual-cure resin cements (Maxcem, Duo-link, Panavia F, Variolink II, Rely X Unicem) were selected. Fifty specimens were classified into five groups containing ten specimens in each group. The water sorption of the five specimens in each group was evaluated after being immersed in distilled water (DDW) for seven days. The following results were obtained by comparing the specimens immersed in DDW with those not immersed in DDW. Results: 1. The water sorption of Maxcem showed the highest score, followed by Panavia F. These two cements were followed by Duo-link and Rely X Unicem. The water sorption of Variolink II showed the lowest score among the cements used in this study. 2. Among the specimens not immersed in DDW, the micro-hardness of Rely X Unicem showed the highest score followed by Panavia F and Variolink II. These cements were followed in order by Duo-link and Maxcem. 3. Among the specimens immersed in DDW, the microhardness of Rely X Unicem showed the highest score followed by Maxcem, Panavia F and Variolink II. Duo-link shoed the lowest score among the cements used in this study. 4. Maxcem, Duo-link, Panavia F and Rely X Unicem showed significant differences in micro-hardness due to water resorption but Variolink II was unaffected by immersion in water. Conclusion: Using the resin cement which has lower water sorption and higher micro-hardness is recommended.

목적: 이 연구의 목적은 다양한 이원 중합 레진 시멘트의 수분 흡착도를 조사하고, 수분 흡착에 따른 미세 경도 변화를 비교해보는 것이다. 연구 재료 및 방법: 다섯 가지의 이원중합 레진시멘트를 선정하였다(Maxcem, Duo-link, Panavia F, Variolink II, Rely X Unicem). 각 그룹 당 10개씩, 총 50개의 시편을 제작하였다.각 그룹 당 5개의 시편들을 증류수에 7일 동안 보관 후 수분 흡착도를 평가하였다. 증류수에 보관한 시편과 보관하지 않은 시편들을 비교하여 결과를 얻었다. 결과: 1. 수분 흡착도에 있어서 Maxcem이 유의성 있게 가장 높았다. 2. 증류수에 보관하지 않았던 시편의 미세 경도는 Rely X Unicem의 유의성 있게 가장 높았다. 3. 증류수에 보관하였던 시편의 미세 경도는 Rely X Unicem이 유의성 있게 가장 높았다. 4. 수분 흡수에 따른 미세 경도의 변화에 있어서 Variolink II는차이가없는것으로나타났으나, Duo-link, Panavia F, 그리고 Rely X Unicem은 감소되었으며, Maxcem은 증가되었다. 결론: 임상적으로 레진시멘트 선택시 수분 흡착도가 작고, 미세 경도가 높은 재료를 선택하는 것이 추천된다.

Keywords

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