• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A multicenter study of elucidation of status and risk factors of osteoradionecrosis of the jaw

Research Project

Project/Area Number 16K11878
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Social dentistry
Research InstitutionKansai Medical University

Principal Investigator

KOJIMA Yuka  関西医科大学, 医学部, 講師 (70720655)

Co-Investigator(Kenkyū-buntansha) 池田 通  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (00211029)
五月女 さき子  長崎大学, 病院(歯学系), 講師 (20325799)
上田 順宏  奈良県立医科大学, 医学部, 助教 (40571005)
山田 慎一  信州大学, 学術研究院医学系(医学部附属病院), 准教授 (50380853)
梅田 正博  長崎大学, 医歯薬学総合研究科(歯学系), 教授 (60301280)
桐田 忠昭  奈良県立医科大学, 医学部, 教授 (70201465)
渋谷 恭之  名古屋市立大学, 大学院医学研究科, 教授 (90335430)
長谷川 巧実  神戸大学, 医学部附属病院, 助教 (50546497)
中村 聡明  関西医科大学, 医学部, 准教授 (60420452)
藤澤 琢郎  関西医科大学, 医学部, 講師 (20330201)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords放射線性顎骨壊死 / 頭頸部がん / リスク因子 / 抜歯 / 根尖病巣 / 顎骨壊死 / 放射線治療 / 歯学
Outline of Final Research Achievements

A multicenter study of 392 patients with head and neck cancer receiving radiotherapy from 2008 to 2014 revealed that primary site (oral or oropharyngeal cancer), periapical lesion at the start of radiotherapy, and tooth extraction after radiotherapy were independent risk factors for development of osteoradionecrosis of the jaw (ORN) by multivariate analysis of Cox regression. Investigations of 30 patients who developed ORN showed that most lesions occurred in the lower jaw and the frequent triggers for ORN were periapical lesion, extraction after radiotherapy, and radiation-induced dental caries. The occurrence rate of ORN in patients with oral or oropharyngeal cancer receiving radiotherapy from 2015 to 2017 was higher than those treated before 2015, although the reason was not unclear and further investigation is necessary.

Academic Significance and Societal Importance of the Research Achievements

頭頸部癌治療において放射性治療(RT)はしばしば用いられる治療法である。RTの重篤な晩期有害事象に放射線性顎骨壊死(ORN)がある。ORNが発症すると保存治療で治癒することはまれで、顎骨切除を余儀なくされ患者のQOLを大きく低下させることも多い。そこでこの研究においてORN発症予防のためにどのような歯科管理をするべきか明らかにする。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2019 2017 2016

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Invited: 1 results)

  • [Journal Article] Relationship between dental status and development of osteoradionecrosis of the jaw: a multicenter retrospective study.2017

    • Author(s)
      Kojima Y, Yanamoto S, Umeda M, Kawashita Y, Saito I, Hasegawa T, Komori T, Ueda N, Kirita T, Yamada SI, Kurita H, Senga Y, Shibuya Y, Iwai H.
    • Journal Title

      Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

      Volume: 124 Issue: 2 Pages: 139-145

    • DOI

      10.1016/j.oooo.2017.04.012

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 放射線性顎骨壊死(ORN)のリスク因子と予防法について ~多施設共同後ろ向き研究の結果より~2019

    • Author(s)
      Kojima Yuka
    • Organizer
      第37回日本口腔腫瘍学会総会・学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 放射線性顎骨壊死発症リスク因子の検討2016

    • Author(s)
      兒島由佳
    • Organizer
      第61回日本口腔外科学会総会・学術大会
    • Place of Presentation
      千葉幕張メッセ
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
  • [Presentation] 放射線性治療前にどのような歯を抜歯すべきか2016

    • Author(s)
      兒島由佳
    • Organizer
      第12回日本口腔ケア協会学術大会
    • Place of Presentation
      長崎ブリックホール国際会議場
    • Related Report
      2016 Research-status Report
    • Invited

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi