Development of the diagnostic method of the sleeping airway stenosis site by the sound analysis of the snoring

• Project/Area Number: 23890141
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Surgical dentistry
• Research Institution: Yamaguchi University
• Principal Investigator: SUGA Hokuto 山口大学, 医学部附属病院, 医員 (40610621)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 睡眠時無呼吸症候群 / 流体解析 / 音響解析 / いびき

Research Abstract

(1) Computational fluid dynamics demonstrated that the levels of the base of the tongue and the soft palate improve airflow in the rigid OA group and in the Silensor group, respectively. It was suggested that both the rigid OA and the Silensor improve respiratory status, but that there are differences in the regions affected by each of the appliances.
(2) The snoring is divided into vibration type and stenosis type. In the vibration type, basic frequency is 150Hz or less, and it keeps a relatively correct period. On the other side the stenosis type, basic frequency is around 500Hz, and characteristically, it has an irregular cycle. We think that we can find an acoustic parameter to help a diagnosis of OSAS if we can clarify an acoustic characteristic of the snoring.

Research Products

• [Journal Article] A new method for determining the optimal CT threshold for extracting the upper airway (2013)
  • Author(s): Nakano H, Mishima K, Ueda Y, Matsushita A, Suga H, Miyawaki Y, Mano T, Mori Y, Ueyama Y.
  • Journal Title: DentoMaxilloFacial Radiology Volume: 42(3) Issue: 3 Pages: 1-6
  • DOI: 10.1259/dmfr/26397438
  • Peer Reviewed
• [Journal Article] Efficacy of the Silensor for treating obstructive sleep apnea syndrome (2012)
  • Author(s): Nakano H., et al
  • Journal Title: Oral Maxillofac Surg Volume: (in press) Issue: 2 Pages: 105-8
  • DOI: 10.1007/s10006-012-0332-y
  • Peer Reviewed
• [Journal Article] Orthognatic surgery in an acromegalic patient with obstructive sleep apnea syndrome (2012)
  • Author(s): Nakano H., et al
  • Journal Title: Sleep Breath Volume: (in press) Issue: 1 Pages: 29-32
  • DOI: 10.1007/s11325-012-0711-5
  • Peer Reviewed
• [Journal Article] Orthognatic surgery in an acromegalic patients with obstructive sleep apnea syndrome (2012)
  • Author(s): Hiroyuki Nakano
  • Journal Title: Sleep and Breathing Volume: (In press)
  • Peer Reviewed
• [Journal Article] Efficacy of the Silensor for treating obstructive sleep apnea syndrome (2012)
  • Author(s): Hiroyuki Nakano
  • Journal Title: Oral and Maxillofacial Surgery Volume: (In press)
  • Peer Reviewed
• [Journal Article] A new method for determining the optimal CT threshold for extracting the upper airway (2012)
  • Author(s): Hiroyuki Nakano
  • Journal Title: DentoMaxilloFacial Radiology Volume: (In press)
  • Peer Reviewed
• [Presentation] 数値流体力学を用いた口腔内装置の作用機序についての検討 (2013)
  • Author(s): 菅 北斗, 三島克章, 中野旬之, 松村真由美, 上山吉哉
  • Organizer: 第67回 NPO 法人日本口腔科学会学術集会
  • Place of Presentation: 栃木県総合文化センター(栃木)
• [Presentation] 睡眠時無呼吸症候群に対して用いられる口腔内装置の作用機序について (2013)
  • Author(s): 松村真由美, 三島克章, 中野旬之, 菅 北斗, 上山吉哉
  • Organizer: 第67回 NPO 法人日本口腔科学会学術集会
  • Place of Presentation: 栃木県総合文化センター(栃木)
• [Presentation] 数値流体力学を用いた口腔内装置の作用機序についての検討 (2013)
  • Author(s): 菅 北斗
  • Organizer: 第67回NPO法人日本口腔科学会学術集会
  • Place of Presentation: 栃木県総合文化センター（栃木）
• [Presentation] 睡眠時呼吸障害と気道形態の関連について (2012)
  • Author(s): 松村真由美, 三島克章, 中野旬之, 中野明日香, 菅 北斗, 中川進太郎, 真野隆充, 上山吉哉
  • Organizer: 第41回日本口腔外科学会中・四国地方会
  • Place of Presentation: 愛媛大学総合情報メディアセンター(愛媛)
  • Year and Date: 2012-04-28
• [Presentation] Analysis of upper airway oral appliances in OSAS patients by computational fluid dynamics (2012)
  • Author(s): Suga H, Mishima K, Nakano H, Matsumura M, Nakagawa S, Nakano A, Ueyama Y
  • Organizer: The 7th Asian Sleep Research Society Congress
  • Place of Presentation: 台北国際会議センター(台湾)
• [Presentation] Mechanisms of oral appliances for treatment of obstructive sleep apnea syndromes (2012)
  • Author(s): Matsumura M, Mishima K, Nakano H, Suga H, Nakagawa S, Nakano A, Miyawaki Y, Ueyama Y
  • Organizer: The 7th Asian Sleep Research Society Congress
  • Place of Presentation: 台北国際会議センター(台湾)
• [Presentation] Analysis of upper airway oral appliances in OSAS patients by computational fluid dynamics (2012)
  • Author(s): Hokuto Suga
  • Organizer: The 7th Asian Sleep Research Society Congress
  • Place of Presentation: 台北国際会議センター（台湾）
• [Presentation] Mechanisms of oral appliances for treatment of obstructive sleep apnea syndromes (2012)
  • Author(s): Mayumi Matsumura
  • Organizer: The 7th Asian Sleep Research Society Congress
  • Place of Presentation: 台北国際会議センター（台湾）
• [Presentation] Differences between a rigid oral appliance and a semi-rigid appliance for the treatment of Obstructive Sleep Apnea Syndrome (2011)
  • Author(s): 菅北斗
  • Organizer: World Sleep 2011
  • Place of Presentation: 京都国際会議場+(京都)
  • Year and Date: 2011-10-17
• [Presentation] Differences between a rigid oral appliance and a semi-rigid appliance for the treatment of Obstructive Sleep Apnea Syndrome (2011)
  • Author(s): Suga H, Nakano H, Matsushita A, Matsumura M, Mano T, Hara H, Mishima K, Yamashita H, Ueyama Y
  • Organizer: World Sleep 2011
  • Place of Presentation: 京都国際会議場(京都)
• [Presentation] Relationship between airway volume and sleep-disordered breathing (2011)
  • Author(s): Nakano H, Mishima K, Matsushita A, Suga H, Miyawaki Y, Mano T, Hara H, Mori Y, Ueyama Y
  • Organizer: World Sleep 2011
  • Place of Presentation: 京都国際会議場(京都)
• [Presentation] Effects of Orthognathic Surgery on Airway and Sleep Disordered Breathing (2011)
  • Author(s): Matsushita A, Mishima K, Nakano H, Suga H, Miyawaki Y, Mano T, Hara H, Mori Y, Ueyama Y
  • Organizer: World Sleep 2011
  • Place of Presentation: 京都国際会議場(京都)
• [Presentation] Effects of the silensor treatment for the Obstructive Sleep Apnea Syndrome cases (2011)
  • Author(s): Matsumura M, Mishima K, Nakano H, Matsushita A, Suga H, Mano T, Hara H, Fukuda T, Yamashita H, Ueyama Y
  • Organizer: World Sleep 2011
  • Place of Presentation: 京都国際会議場(京都)
• [Presentation] 睡眠時呼吸障害と気道形態の関連について
  • Author(s): 松村 真由美
  • Organizer: 第41回日本口腔外科学会中・四国地方会
  • Place of Presentation: 愛媛大学総合情報メディアセンター（愛媛）