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A study of the cavity design in restoration with adhesive composite resin in primary molars

Research Project

Project/Area Number 10671947
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 矯正・小児・社会系歯学
Research InstitutionIwate Medical University

Principal Investigator

NOZAKA Kumiko  Iwate Medical University, Department of Pediatric Dentistry, Associate professor, 歯学部, 助教授 (80048363)

Co-Investigator(Kenkyū-buntansha) SURUGA Yuriko  Iwate Medical University, Department of Pediatric Dentistry, assistant, 歯学部, 助手 (70244952)
ABE Eiichi  Iwate Medical University, Department of Pediatric Dentistry, assistant, 歯学部, 助手 (60265171)
SATOH Teruko  Iwate Medical University, Department of Pediatric Dentistry, assistant, 歯学部, 助手 (70205938)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
KeywordsTrial bar / Cavity outline form / Adhesive compsosite resin / Inflammation of tooth pulp / Young dog / 乳臼歯 / 微小漏洩 / ボンデイング材の厚さ / コンポジットレジン / 窩縁形態 / 微少漏洩 / ボンデイング剤の厚さ / ボンデイング剤の種類
Research Abstract

PURPOSE : In our studies from 1998 to 1999, an attempt to establish the outline form of the cavity was made minimizing microleakage from the margin, without unpolymerized resin leaving behind, keeping the cutting to a minimum amount, and to decide the kind of bar adequate to prepare such a cavity. During the concerned year, since the trial bar as above mentioned had already been made, we performed the cavity preparation in infantile dogs and compared the effects on the pulpal tissues between those prepared with a conventional bar and with the trial bar. MATERIAL AND METHODS : Nine 2-month-old mongrel dogswere used. Under intra-abdominal anesthesia with pentobarbital, tooth cavities of approximately 0.5 mm depth were prepared in the right lower third molars using the trial bar, whereas in the left teeth the cavities were formed with a FG301 diamond bar. Next, a stopping was placed in the floor of these cavities and High-bond Carbo-cement ^<TM> was filled to cover it. At 3, 14 and 28 day … More s after the cavity preparation, mandibles were extirpated and decalcified with Plank-Rychlo solution following fixation. Then, the specimens were dehydrated, embedded in paraffin, cut into 30 μm-thick sections and stained with hematoxylin and eosin. Observation was made on the pulpal tissue changes. RESULTS AND DISCUSSION : At 3 days after the cavity preparation, dilatation of the blood capillaries and disappearance or vacuolar degeneration of the odontoblasts in the proximity of the cavities were observed in both the control and experimental groups. These changes were more significant in the control group. At 14 days, although the vacuolar degeneration of odontoblasts was no more observed, marked inflammatory cell infiltration and capillary dilatation were revealed in the pulpal tissue adjacent to the cavity floor. These changes were also more intensely expressed in the control group. At 28 days, these inflammatory signs still persisted only in the control group. Base on the present results, it is concluded that this experimentally tested bar for the adhesive composite resin is applicable to the clinical usage. Less

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 1.K.Nozaka, et al.: "Microleakage of composite resins in cavities of upper primary molars."International Journal of Paediatric Dentistry. 9. 185-194, (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 野坂久美子 他: "乳臼歯における接着性コンポジットレジン充填に対する窩洞形態"小児歯科学雑誌. 38. 953-964 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 野坂久美子 他: "接着性コンポジットレジンに適した乳臼歯窩洞形態に関する研究"小児歯科学雑誌. 38. 1042-1052 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 野坂久美子 他: "乳臼歯における接着性コンポジットレジン充填に対する窩洞形態"第37回日本小児歯科学会大会及び総会(1999年5月 於大坂).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 野坂久美子 他: "接着性コンポジットレジンに適応した乳歯窩洞形態に関する研究"第38回日本小児歯科学会大会及び総会(2000年6月 於札幌).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nozaka,K.et al.: "Cavity Design in Restorations with Adhesive Composite Resin in Deciduous Teeth."The 17^<th> Congressof the International Association of Peadiatric Dentistry, September 1999.London.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nozaka,K., et al.: "Application of Adhesive composite resin inlays (CR inlay) to the deciduous molars."The Second Conference of Pediatric Dentistry Association of Asia, November 2000,Shanghai..

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Nozaka, Y.Suruga, and E.Amari: "Microleakage of composite resins in cavities of upper primary molars."International Journal of Paediatric Dentistry. 9. 185-194 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Nozaka, T.Satoh, Y.Suruga, E.Abe and A.Namioka: "Cavity design in restration with adhesive Composite resin in primary molars."The Japanese Journal of Pediatric Dentistry. 38. 953-964 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Nozaka, T.Satoh, Y.Suruga, E.Abe and A.Namioka: "A study of cavity forms in primary molars applying adhesive composite resin."The Japanese Journal of Pediatric Dentistry. 38. 1042-1052 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 野坂久美子 他: "乳臼歯における接着性コンポジットレジン充填に対する窩洞形態"小児歯科学雑誌. 38. 953-964 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 野坂久美子 他: "接着性コンポジットレジンに適した乳臼歯窩洞形態に関する研究"小児歯科学雑誌. 38. 1042-1052 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 野坂久美子 他: "接着性コンポジットレジンに適応した乳歯窩洞形態に関する研究"第38回日本小児歯科学会大会及び総会(2000年6月於札幌).

    • Related Report
      2000 Annual Research Report
  • [Publications] Nozaka,K., et al.: "Application of Adhesive composite resin inlays (CR inlay) to the deciduous molars."The Second Conference of Pediatric Dentistry Association of Asia, November 2000, Shanghai..

    • Related Report
      2000 Annual Research Report
  • [Publications] 野坂久美子他: "接着性コンポジットレジンに適応した乳歯窩洞形態に関する研究"第38回 日本小児歯科学会大会にて発表予定(2000年6月22、23日於北海道).

    • Related Report
      1999 Annual Research Report
  • [Publications] 野坂久美子他: "乳臼歯における接着性コンポジットレジン充填に対する窩洞形態" 第37回日本小児歯科学会大会にて発表予定(1999年5月22〜23日、於大阪).

    • Related Report
      1998 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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