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A Study of the cost-benefit analysis of caries prevention at the dental clinc for children

Research Project

Project/Area Number 11672046
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 InstitutionOkayama University

Principal Investigator

OKAZAKI Yoshihide  Pediatric Dentistry, dental hospital, Okayama University, Lecture, 歯学部・附属病院, 講師 (70169100)

Co-Investigator(Kenkyū-buntansha) MATSUMURA Seishi  Pediatric Dentistry, school of Dentistry, Okayama University, Assistant Professor, 歯学部, 助教授 (00173881)
SHIMONO Tsutomu  Pediatric Dentistry, school of Dentistry, Okayama University, Professor, 歯学部, 教授 (40028783)
東 知宏  岡山大学, 歯学部, 助手 (50238268)
宮城 淳  岡山大学, 歯学部, 助手 (40243464)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1999: ¥3,000,000 (Direct Cost: ¥3,000,000)
Keywordsdental clinc for the children / caries prevention / recall system / dental restorations / dental expenses / cost benefit analysis / cost effectiveness / 乳歯齲蝕 / 再修復 / 齲蝕治療
Research Abstract

This study was conducted to compare the effectiveness of the caries prevention on primary and permanent teeth of two groups, the recallant the control group, and to estimate the economical benefits of the caries prevention by the recall system of their life time.
The recall group was composed of 88 preschool children who had undergone dental caries treatment and had regular oral health check-ups until the age of 12.
The control group was composed of 151 preschool children who had undergone dental caries treatment, but never had regular oral health cheek-ups until at the age of 12.
With the recall group, the average duration of the first restorations in the primary molars was 3.30, years and with the control group, 2.48 years. The duration for the restorations for the recall group was 0.8 years longer than the control group.(ANOVA p<0.001)
With the recall group, the mean DF-teeth was 2.39 at 12 years of age, and with the control group was 4.52. The recall group showed 2.1 difference in the number of caries teeth than the control group.(ANOVA p<0.001)
Of the recall group the dental expensess for tretment of the primary molar theeth was about 39,456〜89,664 yen cheaper than the control group.
Of the recall group the dental expensess for tretment of the permanent teeth was about 13,802 yen cheaper than the control group at the age of 12years.
Basing on the recall system, the estimated decrease of dental expenses was about 522,526〜572,734 yen till age of 75.
The cost-effectiveness ratio, which means to decrease the possible dental expenses per one vist, is about 19,000〜21,000 yen.
The cost-benefit ratio, which means to decrease the possible dental expenses per one vist expense, is 5.5〜6.0
These results suggests that the recall system during childhood is effective in decreasing of the dental expenses, in their life time.

Report

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

    (7 results)

All Other

All Publications (7 results)

  • [Publications] 岡崎好秀: "小児歯科における定期健診の必要性に関する研究 第1報 乳歯修復物の機能年数につぃて"小児歯科学雑誌. Vol.38. 1106-1112 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岡崎好秀: "小児における定期健診の必要性に関する研究 第2報 定期健診が乳歯修復物の機能機間に与える影響"小児歯科学雑誌. Vol.39. 206-214 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yoshihide, Okazaki: "A study of the Validty of a Recall System in a Dental Clinc for children. Part1 : A longitudinal survey into the durability of restorations at primary molars."J.Pediatric Dentistry. 38(5). 1100-1105 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yoshihide, Okazaki: "A study of the Validty of a Recall System in a Dental Clinc for children. Part2 : The influence of the durability of restorations at primary molars by the recall system."J.Pediatric Dentistry. 39(1). 206-214 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岡崎好秀: "小児における定期健診の有知性に関する研究・乳歯修復物の保持年数について"口腔衛生学雑誌. Vol50.4. 602-603 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 岡崎好秀: "乳歯齲蝕の初発年齢が以後の修復回数に与える影響について"小児歯科学雑誌. Vol.38.2. 412 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 岡崎好秀: "小児歯科における定期健診の有効性に関する研究 第1報 乳歯修復物の機能年数について"小児歯科学雑誌. Vol33.5. 1106-1112 (2000)

    • Related Report
      2000 Annual Research Report

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

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