Analysis on the Relationship between Major Connector of Mandibular Denture and Speech Production

• Project/Area Number: 24792065
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Prosthetic dentistry
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: WADA Junichiro 東京医科歯科大学, 医歯(薬)学総合研究科, 助教 (20611536)
• Research Collaborator: HIDESHIMA Masayuki ; INUKAI Shusuke ; MATSUURA Hiroshi
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 発語機能 / 部分床義歯 / 客観評価 / 発語機能評価システム / 大連結子 / 客観的機能評価 / 音声認識 / 客観的評価 / 可撤性義歯

Outline of Final Research Achievements

The objective is to investigate the effects of design of major connector in lower jaw and width and cross-sectional shape of the major connectors of located on the middle area of the palate on speech production. Six sounds [si], [chi], [ri], [ni], [hi], and [ki] were objectives. The experimental connectors were fabricated to simulate common designs of connector in lower jaw and connectors located in the middle of palate (width: 8-mm and 20-mm; cross-sectional shape: flat and plump edge). One-way ANOVA with Tukey's test was used for statistical analysis. The appearance ratio of phonetic segment labels was calculated with the speech recognition system to indicate the accuracy of phonetic output. The mean appearance ratio of correct labels decreased with the increasing covered area of lower jaw. In upper jaw, width and cross-sectional shape had limited effects on the articulation of consonants at the palate.

Research Products

• [Journal Article] A comparison of the fitting accuracy of thermoplastic denture base resins used in non-metal clasp dentures to a conventional heat-cured acrylic resin. (2015)
  • Author(s): Wada J, Fueki K, Yatabe M, Takahashi H, Wakabayashi N.
  • Journal Title: Acta Odontol Scand Volume: 73(1) Issue: 1 Pages: 33-7
  • DOI: 10.3109/00016357.2014.946966
  • Peer Reviewed / Open Access
• [Journal Article] A case rehabilitated with fixed bridge and clasp-retained removable partial dentures for a partially edentulous patient with cosmetic disturbance and severe periodontal disease (2015)
  • Author(s): 和田淳一郎
  • Journal Title: Annals of Japan Prosthodontic Society Volume: 7 Issue: 1 Pages: 73-76
  • DOI: 10.2186/ajps.7.73
  • NAID: 130004954390
  • ISSN: 1883-4426, 1883-6860
  • Peer Reviewed / Open Access
• [Journal Article] Influence of the width and cross-sectional shape of major connectors of maxillary dentures on the accuracy of speech production. (2014)
  • Author(s): Wada J, Hideshima M, Inukai S, Matsuura H, Wakabayashi N.
  • Journal Title: Folia Phoniatr Logop Volume: 66(6) Issue: 6 Pages: 227-36
  • DOI: 10.1159/000369439
  • Peer Reviewed / Open Access
• [Journal Article] 日本語を学ぶ留学生のための音声セグメントラベルを用いた促音・長音の発語学習システム (2014)
  • Author(s): 松浦博，和田淳一郎，犬飼周佑，秀島雅之.
  • Journal Title: 日本e-Learning学会会誌 Volume: 14 Pages: 14-23
  • NAID: 130007890323
  • Peer Reviewed / Open Access
• [Presentation] 日本語アクセントの音声セグメントと基本周波数を用いた自動評価. (2014)
  • Author(s): 松浦博，大城一輝，和田淳一郎，犬飼周佑，秀島雅之.
  • Organizer: 日本音響学会2014年秋季研究発表会
  • Place of Presentation: 北海学園大学豊平キャンパス
  • Year and Date: 2014-09-03 – 2014-09-05
• [Presentation] ノンメタルクラスプデンチャーに用いる熱可塑性樹脂の適合性に関する基礎的研究 (2013)
  • Author(s): 和田淳一郎、笛木賢治、谷田部優、浜口潤也、高橋英和、五十嵐順正
  • Organizer: 社団法人日本補綴歯科学会 第122回学術大会
  • Place of Presentation: 福岡国際会議場
• [Presentation] 上顎可撤性義歯の大連結子の幅および断面形態が発語機能に及ぼす影響について (2012)
  • Author(s): 和田淳一郎、秀島雅之、犬飼周佑、安藤智宏、五十嵐順正、松浦博
  • Organizer: 社団法人日本補綴歯科学会 第121回学術大会
  • Place of Presentation: 神奈川県民ホール
• [Presentation] 下顎部分床義歯の連結装置の形態が発音に及ぼす影響について (2012)
  • Author(s): 犬飼周佑、秀島雅之、和田淳一郎、安藤智宏、五十嵐順正、松浦博
  • Organizer: 社団法人日本補綴歯科学会 第121回学術大会
  • Place of Presentation: 神奈川県民ホール
• [Presentation] 矯正装置装着が構音時脳賦活状態および自己評価に与える影響について：fMRIによる研究 (2012)
  • Author(s): 金島貴子, 臼井信男, 和田淳一郎, 犬飼周佑, 大森浩子, 島崎一夫, 秀島雅之, 小野卓史
  • Organizer: 第71回日本矯正歯科学会大会
  • Place of Presentation: いわて県民情報交流センター
• [Presentation] Effects of the orthodontic appliance ．on brain activity during syllable pronunciation: An fMRI study.
  • Author(s): 金島貴子, 和田淳一郎, 犬飼周佑, 大森浩子, 島崎一夫, 秀島雅之, 泰羅雅登, 倉林 亨, 五十嵐順正, 松浦 博, 小野卓史
  • Organizer: 第77回口腔病学会学術大会
  • Place of Presentation: 東京医科歯科大学特別講堂