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Establishment of the nasal airway obstruction improvement method of children with cleft lip and palate using the fluid analysis

Research Project

Project/Area Number 19K21399
Project/Area Number (Other) 18H06312 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0907:Oral science and related fields
Research InstitutionKagoshima University

Principal Investigator

Ban Yusuke  鹿児島大学, 医歯学域鹿児島大学病院, 助教 (60827294)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords小児 / OSA / 流体解析 / 呼吸 / 口唇口蓋裂 / 急速拡大 / 鼻腔通気障害 / 鼻腔通気 / 圧力
Outline of Research at the Start

上気道通気障害によって生じる小児の閉塞性睡眠時無呼吸症候群 (OSAS) は、その原因がアデノイド・口蓋扁桃肥大であることが多く、治療の第一選択はアデノイド切除・口蓋扁桃摘出術とされる。一方、口唇口蓋裂児(CLP 児)のOSAS 罹患率は約30%と報告されており、定型発達児の罹患率2%に比べ著しく高い。この理由はCLP 児に認められる鼻腔通気障害に起因していると考えられる。そこで本研究は流体解析を用いて① CLP 児の複雑な鼻腔の通気障害部位の特定方法を確立する。② CLP 児の歯列側方拡大時の鼻腔各部の通気状態の改善状況を解析し、歯科的鼻腔通気障害の改善方法を確立する。

Outline of Final Research Achievements

This study evaluated RME induced changes in ventilation parameters in children with UCLP using computational fluid dynamics. Setting and Sample Population: Nineteen patients (10 boys, mean age 10.7years) who required RME had cone‐beam computed tomography images taken before and after RME. Methods: Nasal airway ventilation parameters were analysed via computational fluid dynamics, and nasal cross‐sectional area (CSA) was measured. Results: Maximum pressure, velocity and nasal resistance were significantly reduced by RME in the UCLP group. Air flow rate and CSA on the cleft side significantly were increased by RME in the UCLP group. Conclusions: In children with UCLP, increasing the quantity of airflow and CSA on the cleft side by RME substantially improved nasal ventilation

Academic Significance and Societal Importance of the Research Achievements

口唇口蓋裂児(CLP児)には審美・哺乳・咀嚼・言語等の多職種医療従事者の成育的支援が実践されている。しかし、CLP児の約30%が閉塞性睡眠時無呼吸症候群(OSAS)に罹患していると報告されているにもかかわらず、呼吸の面からの支援は十分とはいえない。しかし、本研究で、SASは鼻腔から下咽頭までの上気道のあらゆる部位が原因となり発症する。その罹患率は定型発達児で2%とされている一方、CLP児は30%と著しく高いことから、OSASの主な原因部位として鼻腔が考えられ、その治療方法としてRMEの有効性が示され、歯科からの睡眠医療への貢献が期待される

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (2 results)

All 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results)

  • [Journal Article] Relationship between pharyngeal airway depth and ventilation condition in mandibular setback surgery: A computational fluid dynamics study2020

    • Author(s)
      Shirazawa Yoshito、Iwasaki Tomonori、Ooi Kazuhiro、Kobayashi Yutaka、Yanagisawa‐Minami Ayaka、Oku Yoichiro、Yokura Anna、Ban Yuusuke、Suga Hokuto、Kawashiri Shuichi、Yamasaki Youichi
    • Journal Title

      Orthodontics & Craniofacial Research

      Volume: 1 Issue: 3 Pages: 1-9

    • DOI

      10.1111/ocr.12371

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rapid maxillary expansion effects of nasal airway in children with cleft lip and palate using computational fluid dynamics2019

    • Author(s)
      Iwasaki Tomonori、Yanagisawa‐Minami Ayaka、Suga Hokuto、Shirazawa Yoshito、Tsujii Toshiya、Yamamoto Yuushi、Ban Yuusuke、Sato‐Hashiguchi Makiko、Sato Hideo、Kanomi Ryuzo、Yamasaki Youichi
    • Journal Title

      Orthodontics & Craniofacial Research

      Volume: - Issue: 3 Pages: 201-207

    • DOI

      10.1111/ocr.12311

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2018-08-27   Modified: 2024-03-26  

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