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Long-term degradation of resin-dentin interface in vivo

Research Project

Project/Area Number 07672071
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Conservative dentistry
Research InstitutionTokyo Medical and Dental University

Principal Investigator

SANO Hidehiko  Tokyo Medical and Dental University, 歯学部, 講師 (90205998)

Co-Investigator(Kenkyū-buntansha) YOSHIKAWA Takako  Tokyo Medical and Dental University, 助手 (00182733)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsDentin bonding / Durability / Monkey teeth / Adhesion
Research Abstract

The long-term durability of bonds between adhesive resins and dentin is of significant importance for the longevity of bonded restorations. Objectives. This in vivo long-term study was carried out to evaluate the degradation of resin-dentin bonds in the oral cavity, as well as to test the hypothesis that the three-dimensional ashesive interfac would show morphological changes in vivo over time. Materials and Methods : Very shallow saucer-shaped dentin cavities were prepared in 12 intact teeth of one Japanese monkey (Macaca fuscata) under general anesthesia. The cavities were restored with Clearfil Liner Bond II and Clearfil Photo Posterior resin composite. The teeth were extracted at three different times ; immediate, 180, and 360 days after placement of the restorations. One day after sacrifice of the monkey, specimens of the three time periods were subjected to the micro-tensile bond test at a cross head speed of 1 mm/min. The surfaces of the failed bonds were observed under a field emission scamming electron microscope (FE-SEM). Results : Bond strength measurements in this study were successfully performed and were stable approximately 19 MPa during the one-year testing. Scanning electron microscopic observations of the failed surfaces revealed porosities at the top of the hybrid layr and within the adhesive resin which increased over time. Significance : Long-term bonds can be assessed in vivo using the microtensile bond test, and morphological changes of the adhesive interphase can be evaluated after the bond strength.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] H.SANO,M.YOSHIYAMA,S.EBISU,M.F.BURROW,T.TAKATSU,B.CIUCCHI,R.M.CARBALHO,D.H.PASHLEY: "Comparative SEM and TEM observation of nanoleakage with the hybrid layr." Operative Dentistry. 20 (4). 160-167 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.YOSHIKAWA,H.SANO,J.TAGAMI: "Effect of Cavity Configurations on Bond Strength to Floor Dentin-A role of C-factor on dentin bonding-" Japan Society for Adhesive Dentistry. 14 (2). 43-49 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.YOSHIKAWA,H.SANO,M.F.BURROW,T.TAKATSU,M.YOSHIYAMA,B.CIUCCHI,R.M.CARVALHO,D.H.PASHLEY: "Cavity bonding : Effect of Dentin Depth." DEMTOM/PULP COMPLEX Proceedings of the International Conference on Dentin/Pulp Complex 1995 and the International Meeting on Clinical Topics of Dentin/Pu' Complex. 357-358 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.SANO, M,YOSHIYAMA, S,EBISU, M.F.BMRROW, T.TAKATSU, E.CIVCCHI, R.M.CARVACHO, D.H.PASHLEY: "Comparative SEM and TEM observation of nanoleakage with the hybrid layer" Operative Dentistry. 20・4. 160-167 (1995)

    • Related Report
      1997 Annual Research Report
  • [Publications] 吉川孝子, 佐野英彦, 田上順次: "修復用コンポジットレジンの窩底象牙質に対する接着に及ぼす窩洞形態の影響-C-factorと接着強さとの関係について-" 接着歯学. 14・2. 43-49 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.YOSHIKAWA, H.SANO, M.F.BURROW, T.TAKATSU, M.YOSHIYAMA, R.CIVECCOH, RM.CARVALHO, D.H.RASHLRY: "Cavity Bonding : Effect of Dentin Depth" DENTIN/PVLP COMPLEX Proceedings of the International Conference on Dentin/Palp Complex 1995 and the International Meeting on CIincal Topics of Pnetin/Pulp Complex. 357-358 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.SANO,M.Yasuiyama,S.Ebisu MF.Burrow,T.Takatsu,B.Ciuahi RM.Carualho,DH Pashley: "Comparatise SEM and TEM onseruation of nanoleakage within the hyhrid layer" Operative Dentisery. 20(4). 160-167 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 吉川孝子、佐野英彦、田上順次: "修復用コレポジフトレジンの安底象牙質に対する接着に及ぼす窩洞形態の影等-C-factorと接着強さとの関係について" 接着歯学. 14(2). 43-49 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H SANC.M.YOSHIYAMA,S.EBISU MF.BURROW,T.TAKATSU.B.CIUCUTY CM.CARVALHC.DH PASHLEY: "Comparative SEM and TEM coservation of nanoleakage within the hybrid layer" Operative Dentistry. 20(4). 160-167 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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