Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

The Influence of Water Storage on Mechanical Properties of Adhesive Resin

수중 보관이 접착용 레진의 물리적 성질에 미치는 영향

  • Kim, Won-Chan (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Lee, Kwang-won (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Lee, Jeong (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Yu, Mi-Kyoung (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Kim, Jeong-Hee (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University)
  • 김원찬 (전북대학교 치과대학 치과보존학교실) ;
  • 이광원 (전북대학교 치과대학 치과보존학교실) ;
  • 이정 (전북대학교 치과대학 치과보존학교실) ;
  • 유미경 (전북대학교 치과대학 치과보존학교실) ;
  • 김정희 (전북대학교 치과대학 치과보존학교실)
  • Published : 2006.06.30
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Abstract

Objective To evaluate the influence of water storage on the mechanical properties of dental adhesives over 1 and 3 months. Materials and Methods Adhesive resin sheets were prepared by pouring either All-bond 2(AB), Clearfil SE Bond(SE) into a mold measuring $15{\times}15{\times}0.9mm$. After solvent in primer evaporation, the adhesives were light-cured and removed from the mold and divided in two pieces, trimmed to hourglass shape that were used to determine the micro-tensile strength(MTS). Another hourglass shaped metal mold measuring $2.0{\times}1.5mm$ in cross-section area was made to determine the Young's modulus(E). Adhesive specimens for Young's modulus(E) were prepared in the same method. Specimens were stored at $37^{\circ}C$ in distilled water and tested after 1 and 3 months. The data were analyzed by one-way ANOVA and Tukey's test. Results Water storage significantly decreased the micro-tensile strength(MTS) of AB and SE specimens after 1 and 3 months(P<0.05). The Young's modulus(E) were also decreased after water storage for 1 and 3 months, but statistically not significant in each group of AB and SE group respectively. Conclusions Long-term exposure of adhesive resin to water can cause reduction of mechanical properties. It may compromise resin/dentin bonds and affect longevity of restorations.

Keywords

References

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