A randomized trial of efficacy of nonmetal clasp dentures

• Project/Area Number: 15K11150
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: Fueki Kenji 東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (30334436)
• Project Period (FY): 2015-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 部分床義歯 / 熱可塑性樹脂 / ノンメタルクラスプデンチャー / ランダム化比較試験 / 口腔関連QoL / 患者満足度 / 費用対効果 / 咀嚼能力

Outline of Final Research Achievements

The aim of this study was to conduct a clinical trial to clarify efficacy of removable partial dentures (RPDs) using thermoplastic resin (nonmetal clasp denture) comparing to metal-clasp retained RPDs. The results revealed that oral-health related OHRQoL, patient satisfaction and oral appearance was superior to metal-clasp retained RPDs, while influence of wearing nonmetal clasp dentures had limited was limited in short duration. Cost-effectiveness of nonmetal clasp dentures was inferior to that of metal-clasp RPDs.

Academic Significance and Societal Importance of the Research Achievements

近年，ノンメタルクラスプデンチャーは見た目のよい義歯として注目されているが，本研究によりその臨床的妥当性が裏付けられた．さらに，ノンメタルクラスプデンチャーで懸念されている支台歯の歯周組織への為害作用は短期間であれば問題ないことが示された．ただし，ノンメタルクラスプデンチャーの費用対効果は従来の義歯よりも劣るため，臨床においては，治療効果だけでなく治療費用も患者に十分に説明をする必要がある．

Research Products

• [Journal Article] Minimal clinically important differences of oral health-related quality of life after removable partial denture treatments. (2020)
  • Author(s): Myint Oo KZ, Fueki K, Yoshida-Kohno E, Hayashi Y, Inamochi Y, Wakabayashi N.
  • Journal Title: Journal of Dentistry Volume: 92 Pages: 103246-103246
  • DOI: 10.1016/j.jdent.2019.103246
  • Peer Reviewed
• [Journal Article] Cost-effectiveness analysis of prosthetic treatment with thermoplastic resin removable partial dentures (2020)
  • Author(s): Fueki K, Inamochi Y, Kohno-Yoshida E, Wakabayashi N.
  • Journal Title: Journal of Prosthodontic Research. Volume: -
  • NAID: 130007990331
  • Peer Reviewed
• [Journal Article] Pretreatment impairment of oral health-related quality of life is associated with variations in minimal clinically important differences among patients with removable partial denture treatment (2020)
  • Author(s): Myint Oo KZ, Fueki K, Yoshida-Kohno E, Hayashi Y, Inamochi Y, Wakabayashi N.
  • Journal Title: Journal of Oral Rehabilitaion Volume: - Issue: 7 Pages: 902-909
  • DOI: 10.1111/joor.12980
  • Peer Reviewed
• [Journal Article] The association between mucosal pain and subjective masticatory function in patients with partial removable dental prostheses. (2019)
  • Author(s): Fueki K, Kohno-Yoshida E, Inamochi Y, Wakabayashi N.
  • Journal Title: Journal of Oral Rehabilitaion Volume: 46 Issue: 12 Pages: 1095-1099
  • DOI: 10.1111/joor.12841
  • Peer Reviewed
• [Journal Article] Patient satisfaction and preference with thermoplastic resin removable partial dentures: a randomised cross-over trial (2019)
  • Author(s): Fueki K, Kohno-Yoshida E, Inamochi Y, Wakabayashi N.
  • Journal Title: Journal of Prosthodontic Research Volume: 64 Issue: 1 Pages: 20-25
  • DOI: 10.1016/j.jpor.2019.05.003
  • NAID: 130007845538
  • ISSN: 1883-1958, 1883-9207
  • Peer Reviewed
• [Journal Article] Comparison of immediate and conventional loading protocols with respect to marginal bone loss around implants supporting mandibular overdentures: A systematic review and meta-analysis (2019)
  • Author(s): Sanda Minoru、Fueki Kenji、Bari Pranjal Radke、Baba Kazuyoshi
  • Journal Title: Japanese Dental Science Review Volume: 55 Issue: 1 Pages: 20-25
  • DOI: 10.1016/j.jdsr.2018.09.005
  • NAID: 50014414215
  • Peer Reviewed
• [Journal Article] Effect of incorporation of surface pre-reacted glass ionomer filler in tissue conditioner on the inhibition of <i>Candida albicans</i> adhesion (2018)
  • Author(s): TAKAKUSAKI Kensuke、FUEKI Kenji、TSUTSUMI Chiaki、TSUTSUMI Yusuke、IWASAKI Naohiko、HANAWA Takao、TAKAHASHI Hidekazu、TAKAKUDA Kazuo、WAKABAYASHI Noriyuki
  • Journal Title: Dental Materials Journal Volume: 37 Issue: 3 Pages: 453-459
  • DOI: 10.4012/dmj.2017-171
  • NAID: 130007394716
  • ISSN: 0287-4547, 1881-1361
  • Year and Date: 2018-05-28
  • Peer Reviewed / Open Access
• [Journal Article] Trueness and precision of digital impressions obtained using an intraoral scanner with different head size in the partially edentulous mandible (2018)
  • Author(s): Hayama Hironari、Fueki Kenji、Wadachi Juro、Wakabayashi Noriyuki
  • Journal Title: Journal of Prosthodontic Research Volume: 62 Issue: 3 Pages: 347-352
  • DOI: 10.1016/j.jpor.2018.01.003
  • NAID: 130007458284
  • ISSN: 1883-1958, 1883-9207
  • Peer Reviewed
• [Journal Article] Effect of dietary counselling with prosthetic restoration on fruit and vegetable intake in partially dentate patients: A prospective study (2018)
  • Author(s): Nabeshima G.、Fueki K.、Inamochi Y.、Wakabayashi N.
  • Journal Title: Journal of Oral Rehabilitation Volume: 45 Issue: 8 Pages: 618-626
  • DOI: 10.1111/joor.12647
  • Peer Reviewed
• [Journal Article] 離端欠損をどこまで回復する必要があるのか？ ～短縮歯列という考え方と臨床エビデンス～ (2018)
  • Author(s): 笛木賢治，稲用友佳
  • Journal Title: 東京都歯科医師会雑誌 Volume: 66 Pages: 405-412
  • Peer Reviewed
• [Journal Article] Oral health-related quality of life in patients with non-metal clasp dentures: a randomised cross-over trial (2017)
  • Author(s): Fueki K.、Yoshida-Kohno E.、Wakabayashi N.
  • Journal Title: Journal of Oral Rehabilitation Volume: 44 Issue: 5 Pages: 405-413
  • DOI: 10.1111/joor.12494
  • Peer Reviewed
• [Journal Article] Clinical evidence of non-metal clasp denture: a systematic review (2017)
  • Author(s): 笛木 賢治、稲用 友佳
  • Journal Title: Annals of Japan Prosthodontic Society Volume: 9 Issue: 4 Pages: 297-302
  • DOI: 10.2186/ajps.9.297
  • NAID: 130006179184
  • ISSN: 1883-4426, 1883-6860
  • Open Access
• [Presentation] 客観的・主観的咀嚼能力評価法の反応性 －部分床義歯による補綴治療効果を指標とした検討－ (2019)
  • Author(s): 林 葉子，笛木賢治，河野英子，稲用友佳，若林則幸.
  • Organizer: 日本咀嚼学会
• [Presentation] ノンメタルクラスプデンチャーを用いた補綴治療の費用効果分析 (2018)
  • Author(s): 稲用友佳， 笛木賢治， 河野英子，谷田部 優，若林則幸.
  • Organizer: 日本補綴歯科学会
• [Presentation] 咬合支持が補綴治療と共に行う栄養指導の効果に及ぼす影響. (2018)
  • Author(s): 鍋島 玄， 笛木賢治， 稲用友佳， 若林則幸.
  • Organizer: 日本補綴歯科学会
• [Presentation] 部分床義歯装着者における床下粘膜痛と口腔関連QoL の関連. (2018)
  • Author(s): 河野英子， 熊谷勇人， 笛木賢治， 若林則幸.
  • Organizer: 日本補綴歯科学会