Journal of Japanese Society for Laser Dentistry最新文献_第2页

Er: YAGレーザーによる歯牙硬組織切削 (窩洞形成) について Er:关于YAG激光切削牙硬组织(凹洞形成)

Journal of Japanese Society for Laser Dentistry Pub Date : 1995-06-01 DOI: 10.5984/JJPNSOCLASERDENT.6.16

護熊崎, 紘一豊田

{"title":"Er: YAGレーザーによる歯牙硬組織切削 (窩洞形成) について","authors":"護熊崎, 紘一豊田","doi":"10.5984/JJPNSOCLASERDENT.6.16","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.6.16","url":null,"abstract":"歯硬組織の光に対する態度について, 象牙質の紫外, 赤外領域における光吸収スペクトルを解析した.(1981年, 日本歯科保存学会にて発表)これらの結果より, エナメル質, 象牙質の吸収帯は3μm前後と10μm前後に存在し, 3μmの吸収スペクトルは水の吸収スペクトルと同じであることがわかった.以上の結果から, 硬組織に有効なレーザーとしては, 3μmではEr: YAGレ-ザーが有効で, 10μmではCO2レーザーが適当であると考えられる.しかしながら, CO2レーザーは発熱によって象牙表面に亀裂が発生することが臨床上で問題となり, 臨床ではEr: YAGレーザーの方が有利であると考えられる.(1990年, 日本レーザー歯学会にて発表)また, Er: YAGレーザーの歯牙切削の作用機序としてHydroxy-apatiteのOH基の噴発 (結晶中のHydration shellが瞬間に気相になる状態) によるものであることを明らかにすることができた.(1993年, 日本歯学保存学会にて発表)現在では, Er: YAGレーザーと私の開発してコンタクトチップを用いて臨床応用を行ない, 良好な結果を得ている.今回は, これらの結果を基に臨床症例について述べてみることにした.特にいずれの症例も切削時の疹痛が皆無であることは特記すべきことである.","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124150067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Etching with the Er: YAG Laser Er: YAG激光蚀刻

Journal of Japanese Society for Laser Dentistry Pub Date : 1995-04-25 DOI: 10.5984/JJPNSOCLASERDENT.5.103

M. Kumazaki, M. Kumazaki

{"title":"Etching with the Er: YAG Laser","authors":"M. Kumazaki, M. Kumazaki","doi":"10.5984/JJPNSOCLASERDENT.5.103","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.5.103","url":null,"abstract":"レーザー照射によるエナメル質表面の性状については, 従来よりNd: YAGレーザーによるものやCO2レーザーによる報告は見られるが, その効果については明らかにされていない.私は, 保存学的立場より, Er: YAGレーザーをエナメル質面に照射し, エッチング効果が生じるかどうかについて検討を行った.歯科領域にレーザーを使用する場合, 使用するレーザー光の波長によって吸収係数が異なるため, また光の到達深度も異なってくる.この場合, あらかじめ正確に歯質の吸収係数を測定し, 到達深度を見積もっておくことが必要であり, 適切なレーザーを選ぶに当たって, 臨床応用には重要なことの一つである.熊崎らは, 第1回レーザー歯学研究会において, 歯質の光吸収係数を詳しく検討した結果を報告し, 日本レーザー歯学会誌第3巻第1号 (1992) に発表した.その結果, エナメル質, 象牙質の吸収係数は3μm前後と10μm前後に大きな吸収を認め, 使用するレーザーの選択に当たっては, この2つの波長を有するレーザーが有効と考えられる.CO2レーザーについては, 日本歯科保存学会において熊崎らが既に発表を行ったので, 今回は3μm前後の波長を有するEr: YAGレーザーについてエナメル質の表面処理効果 (エッチング効果) の検討を行った.実験方法: 牛下顎前歯エナメル質にEr: YAGレーザーを9段階のパワーで照射を行い, それぞれの段階において歯質表面処理後にレジン充填を施し, 引張強さを測定し, エネルギー密度と引張強さとの関係について攻究した.さらに照射レーザービームの評価についてはSpiricon Type LMP32×32-81 (スピリコン社製) レーザービーム評価システムを用いて行った.さらに各々の照射条件におけるSEM像との対比において最適条件を決定し, 臨床応用に一段と近づいたものと考えている.実験結果: Er: YAGレーザーによる歯質表面処理効果 (エッチング効果) が生じることが, 引っ張り試験およびSEM像により明らかになった.牛歯エナメル質エッチングによる引張強さでは, エネルギー密度8.5J/cm2で139.7kg/cm2を示し, 酸エッチングの118.9kg/cm2より強い引張強さを示した.このことは明らかに表面にエッチング様変化が変こったものと考えられる.また, SEM像においてもエッチングによる像によく似た状態が見られる.レーザーによる表面処理効果の発生が考えられた.","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"375 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123496864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

The Incremental Effect of Acid Resistance and Remineralization on Incipient Caries of Enamel with Laser Irradiation 激光照射对牙釉质早期龋的耐酸和再矿化作用

Journal of Japanese Society for Laser Dentistry Pub Date : 1995-03-15 DOI: 10.5984/JJPNSOCLASERDENT.2.1

T. Morioka, S. Tagomori, Yuko Inai

{"title":"The Incremental Effect of Acid Resistance and Remineralization on Incipient Caries of Enamel with Laser Irradiation","authors":"T. Morioka, S. Tagomori, Yuko Inai","doi":"10.5984/JJPNSOCLASERDENT.2.1","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.2.1","url":null,"abstract":"The authors have demonstrated that a normal pulsed Nd: YAG laser was the most suitable among the lasers to produce resistance against acid decalcification of human tooth enamel, and a combined treatment of laser irradiation and fluoride application onto the enamel obtained most remarkale acid resistance.It is interest to determine whether the use of laser and fluoride in combination is a more effective procedure for incipient caries prevention.Artificial caries-like lesions were made on human enamel, and the enamel was then treated with laser irradiation and APF (acidulated phosphate fluoride). The laser used in this study was a normal pulsed Nd YAG laser which has 0.3 msec pulses with a pulse energy of 0.2 J/pulse. The tooth enamel was lased at a repitition rate of 20pps and total enegy density of 40J/cm2.The acid resistance of the enamel was determined by the amount of dissolved calcium from the enamel surface in the acidic solution. Fluoride uptake in the enamel was examined by mean of EPM (electron probe microanalyzer). Remineralization of the enamel was measured by microradiographic technique and microhardness test. The following results were obtained.1) An increment in acid resistance of enamel was caused by laser irradiation alone and also fluoride treatment after laser irradiation.2) In the case of fluoride treatment after laser irradiation, the fluoride uptake into the surface and subsurface enamel was higher than in the cases of fluoride treatment alone.3) The remineralization was remarkable in the cases of laser irradiation and fluoride treatment after laser irradiation groups. The extent of remineralization was seen from the surface to the bottom of the lesion area.","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132357188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

レーザー外科および放射線照射により治癒した上顎悪性黒色腫の 1 例激光外科和放射线治疗的上颚恶性黑色素瘤一例

Journal of Japanese Society for Laser Dentistry Pub Date : 1994-06-01 DOI: 10.5984/JJPNSOCLASERDENT.5.23

春美水城, 憲司河野, 正嗣清水

引用次数: 0

低出力 Nd: YAG レーザー星状神経節照射の効果について低功率Nd: YAG激光星状神经节照射的效果

Journal of Japanese Society for Laser Dentistry Pub Date : 1993-06-01 DOI: 10.5984/JJPNSOCLASERDENT.4.33

道生金子, 秀松下, 麦夫加藤, 憲司吉田, 昌彦深谷

引用次数: 1

半導体 (GaAlAs) レーザーの露出根面の知覚過敏症に対する効果および歯肉溝領域の細菌叢に及ぼす影響半导体(GaAlAs)激光的暴露对面知觉过敏症的效果以及对齿龈沟区域菌群的影响

Journal of Japanese Society for Laser Dentistry Pub Date : 1993-06-01 DOI: 10.5984/JJPNSOCLASERDENT.4.3

雅博飯田, 嘉則安藤, 久渡辺, 烈石川

{"title":"半導体 (GaAlAs) レーザーの露出根面の知覚過敏症に対する効果および歯肉溝領域の細菌叢に及ぼす影響","authors":"雅博飯田, 嘉則安藤, 久渡辺, 烈石川","doi":"10.5984/JJPNSOCLASERDENT.4.3","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.4.3","url":null,"abstract":"The purpose of this study was to investigate the effect of GaAlAs-semicondutorlaser irradition dentin hypersensitivity of exposed root surface and its influence to microflora in the dento-gingival region.Twenty two teeth from 6 patients with dentin hypersensitivity of exposed root surface weresubjected to this experiment. This irradiation of GaAlAs-semiconductor laser (central wavelength: 900nm, average output: 2.4mW) was applied to an exposed root surface for 2min30s in the experimental group. Effect of laser irradiation was varified by the examination ofsensitivity rate to cold water, air blow and mechanical stimuli of explorer at before, immediately after, 1 week after and 4 weeks after laser irradiation and at the same time samplingof dental plaque from the dento-gingival region and bacterial measurements by dark fieldmicroscopy were performed. Dummy laser device was used in the control group and followed to carry out the same examination.Laser irradiated group showed significant high improvement of hypersensitivity to coldwater, air blow and mechanical stimuli of explorer compared to control group (p<0.05).No remarkable difference was observed in the total bacterial cell counts and the compositionof micro biota between two groups.GaAlAs-semiconductor laser irradiation is indicated to be effective to dentin hypersensitivity of exposed root surface but failed to have its influence upon micro-flora in the dentogingival region. (J. Jpn. Soc. Laser Dent.4: 3-7, 1993Reprint requests to Dr. Iida)","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127898817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

KrF Excimer Laserの生体作用第2報 KrF Excimer Laser的生物作用第二报告

Journal of Japanese Society for Laser Dentistry Pub Date : 1993-06-01 DOI: 10.5984/JJPNSOCLASERDENT.4.75

睦彦村井, 賢二橋本, 一郎山田, 万枝山口, 善政北川, 聡落合, 勝彦佐藤

引用次数: 0

He-Ne Laserの歯質透過性について关于He-Ne Laser的牙齿穿透性

Journal of Japanese Society for Laser Dentistry Pub Date : 1993-06-01 DOI: 10.5984/JJPNSOCLASERDENT.4.53

治爾渡辺

引用次数: 3

Pulsed Nd: YAG Laser (D-Lase 300) 照射時のエナメル質と象牙質の形態学的研究 Pulsed Nd: YAG Laser (D-Lase 300)照射时牙釉质和象牙质形态学研究

Journal of Japanese Society for Laser Dentistry Pub Date : 1992-06-01 DOI: 10.5984/JJPNSOCLASERDENT.3.57

中山哲夫

引用次数: 6

Excision of Dental Caries 龋齿切除

Journal of Japanese Society for Laser Dentistry Pub Date : 1992-06-01 DOI: 10.5984/JJPNSOCLASERDENT.3.23

M. Kumazaki, H. Fujiwara, Takahiro Matsuda, Kunio Zennyu, M. Kumazaki, Koich Toyoda, B. Fujii

引用次数: 29