Technical innovation for Er: YAG laser-formed cavity

• Project/Area Number: 16K20464
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Conservative dentistry
• Research Institution: Tokyo Dental College
• Principal Investigator: HARUYAMA AKIKO 東京歯科大学, 歯学部, 講師 (30385174)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: Er:YAGレーザー / 接着強さ / コンポジットレジン / レーザー / 接着 / 歯学

Outline of Final Research Achievements

Microtensile bond strength to the enamel surface irradiated with Er:YAG laser was significantly lower in the two-step self-etch adhesive than in the non-irradiated one, but was significantly higher than that in the one-step self-etch adhesive when irradiated. Although the bond strength to the dentin surface irradiated with Er:YAG laser was almost the same as that of the non-irradiated surface, the two-step self-etch adhesive was significantly higher than the one-step self-etch adhesive. It was not effective to the phosphoric acid pretreatment before applying the one-step self-etch adhesive.

Academic Significance and Societal Importance of the Research Achievements

歯科治療のあらゆる領域でレーザーが活用されているが，レーザー照射被着歯面への接着性の不安定さゆえに，硬組織切削でのレーザー使用は普及しているとはいいがたい．
本研究において，レーザー照射エナメル質・象牙質に対して，以前の研究と異なる結果となった．接着システムは日々材料の進歩があり，必ずしも接着システムの種類で選択するとも言い難い．接着の解明をするために，今後も研究が必要と思われる．

Research Products

• [Journal Article] Influence of solvent evaporation on ultimate tensile strength of contemporary dental adhesives (2019)
  • Author(s): Kameyama, A., Haruyama, A., Abo, H., Kojima, M., Nakazawa, Y., Muramatsu, T.
  • Journal Title: Applied Adhesion Science Volume: 7 Pages: 4-4
  • NAID: 120006709070
  • Peer Reviewed / Open Access
• [Journal Article] Micrographic and spectroscopic analyses of the application of methyl methacrylate-p-strene sulfonic acid copolymer based desensitizing agents to bovine dentin (2019)
  • Author(s): Kameyama, A., Haruyama, A., Nakazawa, Y., Furusawa M., Muramatsu, T
  • Journal Title: Asian Pac J Dent Volume: 19 Pages: 51-57
  • Peer Reviewed / Open Access
• [Journal Article] Repair Bond Strength of a Resin Composite to Plasma-Treated or UV Irradiated CAD/CAM Ceramic Surface (2018)
  • Author(s): Kameyama A, Haruyama A, Tanaka A, Noro A, Takahashi T, Yoshinari M, Furusawa M, Yamashita S
  • Journal Title: Coatings Volume: 8 Pages: 230-230
  • Peer Reviewed / Open Access
• [Journal Article] Combined effects of electric toothbrushing and dentifrice on artificial stain removal: An in vitro study (2018)
  • Author(s): Haruyama A, Kameyama A, Ono T, Baba Y, Sugiyama T, Sugiyama S, Takahashi T.
  • Journal Title: Journal of Clinical and Experimental Dentistry Volume: 10 Pages: 0-0
  • DOI: 10.4317/jced.54312
  • Peer Reviewed / Open Access
• [Journal Article] Er:YAGレーザー照射歯質へのレジン接着における問題点 (2017)
  • Author(s): 亀山敦史，春山亜貴子，加藤純二
  • Journal Title: 日本レーザー学会誌 Volume: 28
  • NAID: 130006832546
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effects of prophylaxis polishing on the surface roughness and gloss of CAD/CAM restorative materials. (2017)
  • Author(s): Sugiyama T, Kameyama A, Enokuchi T, Haruyama A, Chiba A, Sugiyama S, Hosaka M, Takahashi T
  • Journal Title: Journal of Clinical and Experimental Dentistry Volume: 9
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Resin bonding of self-etch adhesives to bovine dentin bleached from pulp chamber (2016)
  • Author(s): Haruyama A, Kameyama A, Kato J, Takemoto S, Oda Y, Kawada E, Takahashi T, Furusawa M.
  • Journal Title: BioMed Research International Volume: 2016 Pages: 1313586-1313586
  • DOI: 10.1155/2016/1313586
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Clinical observation of the tooth surface during air-drying of self-etching primer under 3D video microscope (2016)
  • Author(s): Abo H, Kameyama A, Haruyama A
  • Journal Title: Applied Adhesion Science Volume: 4 Issue: 1 Pages: 7-7
  • DOI: 10.1186/s40563-016-0064-6
  • Peer Reviewed / Open Access
• [Presentation] コンポジットレジンでの隔壁形成時における各種歯内療法用仮封材の辺縁封鎖性 (2019)
  • Author(s): 亀山敦史，春山亜貴子
  • Organizer: 第73回日本歯科理工学会学術講演会
• [Presentation] 歯科用ハンドピースの基本的使用法訓練用ツールの開発（第4報） (2018)
  • Author(s): 大澤航介，平田創一郎，田代宗嗣，春山亜貴子，松岡周吾，谷口健太郎，亀山敦史，髙橋尚子
  • Organizer: 第37回日本歯科医学教育総会および学術大会
• [Presentation] MSポリマー配合象牙質知覚過敏抑制剤の象牙細管封鎖効果 (2018)
  • Author(s): 亀山敦史，春山亜貴子，古澤成博
  • Organizer: 第11回日本総合歯科学会総会・学術大会
• [Presentation] ハンドピース用メインテナンススプレーがコンポジットレジンの象牙質接着性能に及ぼす影響 (2018)
  • Author(s): 春山亜貴子，亀山敦史，杉山利子，髙橋俊之
  • Organizer: 第11回日本総合歯科学会総会・学術大会
• [Presentation] ATP+AMP ふき取り検査を用いた歯科外来における間接接触感染ハイリスク領域の抽出 (2018)
  • Author(s): 田代宗嗣，平田創一郞，大澤航介，森永一喜，眞木吉信，春山亜貴子，杉戸博記.
  • Organizer: 第33回日本環境感染学会総会・学術集会
• [Presentation] 歯科用ハンドピースに基本的使用法訓練用ツールの開発（第2報）～訓練プロトコルの作成 (2017)
  • Author(s): 田代宗嗣，平田創一郞，春山亜貴子，大澤航介，谷口健太郎，酒寄孝治，半場秀典，高橋尚子，河田英司．
  • Organizer: 第36回日本歯科医学教育学会総会および学術大会
• [Presentation] 歯科用ハンドピース型技能訓練具を用いたトレーニング効果の検証について（第3報） (2017)
  • Author(s): 大澤航介，平田創一郞，田代宗嗣，春山亜貴子，松岡周吾，谷口健太郎，酒寄孝治，半場秀典，高橋尚子，河田英司．
  • Organizer: 第36回日本歯科医学教育学会総会および学術大会
• [Presentation] 重曹を用いた歯面の着色除去効果 (2017)
  • Author(s): 春山亜貴子，中澤妙衣子，亀山敦史．
  • Organizer: 第10回国際歯科審美学会(IFED)世界大会・日本歯科審美学会第28回学術大会
• [Presentation] PMTCペーストの応用がCAD/CAM用歯冠修復材料の光沢度と表面粗さに与える影響 (2016)
  • Author(s): 亀山敦史，江野口朋香，杉山節子，春山亜貴子，杉山利子，髙橋俊之，古澤成博
  • Organizer: 第9回日本総合歯科学会総会・学術大会
  • Place of Presentation: 岡山市
  • Year and Date: 2016-11-19
• [Presentation] Effect of surface treatment after the flowable composite base on the bond strength of the restorative ceramic block. (2016)
  • Author(s): Haruyama A, Kameyama A
  • Organizer: International Dental Materials Congress 2016
  • Place of Presentation: Bali, Indonesia
  • Year and Date: 2016-11-05
  • Int'l Joint Research
• [Presentation] Influence of solvent evaporation on ultimate tensile strength of cured dental adhesives. (2016)
  • Author(s): Kameyama A, Haruyama A
  • Organizer: International Dental Materials Congress 2016
  • Place of Presentation: Bali, Indonesia
  • Year and Date: 2016-11-05
  • Int'l Joint Research
• [Presentation] 歯科用ヘッドライトの曝露による修復用コンポジットレジンの硬化深さ (2016)
  • Author(s): 亀山敦史，春山亜貴子，中澤妙衣子
  • Organizer: 第27回日本歯科審美学会学術大会
  • Place of Presentation: 札幌市
  • Year and Date: 2016-08-27