Pub Date : 2016-12-01DOI: 10.5984/JJPNSOCLASERDENT.27.111
航一 新海
{"title":"Er,Cr:YSGGレーザーを用いた窩洞形成とコンポジットレジン修復","authors":"航一 新海","doi":"10.5984/JJPNSOCLASERDENT.27.111","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.27.111","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114073280","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}
{"title":"Processing of Ceramic Blocks Using Femtosecond Lasers","authors":"Noritsugu Kitao, E. Matsubara, K. Kakimoto, T. Tsujibayashi, Y. Komasa","doi":"10.5984/JJPNSOCLASERDENT.27.90","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.27.90","url":null,"abstract":"要旨:フェムト秒レーザーを用いたセラミックブロックの切削について検討した。実験材料には,完全焼結ジルコニア,半焼 結ジルコニア,アルミナおよびハイドロキシアパタイトを用いた。設定条件は波長,照射光強度,焦点外し距離,オートステー ジの移動速度および切削粉除去のためのエアーの有無とし,設定条件を変化させてレーザー照射して形成した切削痕の深さと断 面積を比較した。 その結果,材料内部に水が浸透すると切削力が増した。ジルコニアは黒化が見られたが,再加熱で消失した。切削力は照射光 強度に依存性があった。照射光強度が増加すると切削痕の深さと断面積は増加したが,20mW を超えると増加量は低下した。同 じ照射光強度では,波長は短い方,パルス幅は短い方が切削量は大きかった。切削粉の除去が切削に有効であった。窩洞形成し た窩底の表面粗さは,臨床応用可能な範囲であった。 以上から,フェムト秒チタンサファイアレーザーは歯科用セラミックの高精度な加工に応用できることが示唆された。","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127263848","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}
Pub Date : 2014-04-01DOI: 10.5984/JJPNSOCLASERDENT.25.2
哲也 北, 克典 石井, 一志 吉川, 謙三 保尾, 一世 山本, 邦男 粟津
{"title":"波長5.85μmナノ秒パルスレーザーを用いたう蝕象牙質の選択的な除去；硬さと切削特性の関係","authors":"哲也 北, 克典 石井, 一志 吉川, 謙三 保尾, 一世 山本, 邦男 粟津","doi":"10.5984/JJPNSOCLASERDENT.25.2","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.25.2","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125865820","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}
Pub Date : 2013-04-01DOI: 10.5984/JJPNSOCLASERDENT.24.15
教一 大浦, 奥下 竜太郎, 誠一 大木
{"title":"抜歯直後インプラント（HAコーティング・1回法）における炭酸ガスレーザーの応用","authors":"教一 大浦, 奥下 竜太郎, 誠一 大木","doi":"10.5984/JJPNSOCLASERDENT.24.15","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.24.15","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127980953","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}
Pub Date : 2011-08-01DOI: 10.5984/JJPNSOCLASERDENT.22.77
正明 和賀, 達明 古本, 成良 杉原, 隆司 上田
The bactericidal effects of an Nd:YAG laser by using a reaction mediator of TiO2 are described. The laser beam was irradiated to the TiO2 suspension through a quartz optical fiber, and the generated induced dynamic stress was observed in the TiO2 particles which were absorbed by the laser beam. Our previous study demonstrated the bactericidal effect of an Nd:YAG laser due to thermal and induced dynamic stress. The aim of this study was to investigate the effect of different conditions of the Nd:YAG laser on induced dynamic stress. A pulsed Nd:YAG laser (STREAK-I ALTEK Co., Tokyo) and rutile type of TiO2 powder (TIO12PB Kojundo Chemical Lab. Co., Ltd., Saitama) were used. Streptococcus mutans ATCC 25175 was used for this experiment. Bacterial cell suspensions of the strain were irradiated by Nd:YAG laser with several different pulsed energies and times of exposure, then the samples were subjected to SEM investigation. After these treatments, the viable cell count was estimated in each sample under different conditions. Regarding the bactericidal effects of the Nd:YAG laser in the presence of TiO2, there was a significant reduction such as 90-99.9% of viable cells of S. mutans. SEM (JSM-6390LV JEOL Ltd. Tokyo) investigations revealed morphological damage according to the pulse energies and exposure times applied. It is suggested that the bactericidal action occurred as a result of the dynamic stress induced by the Nd:YAG laser irradiation and TiO2 as a reaction mediator.
{"title":"Nd: YAGレーザーとTiO2によるin vitroでの殺菌効果","authors":"正明 和賀, 達明 古本, 成良 杉原, 隆司 上田","doi":"10.5984/JJPNSOCLASERDENT.22.77","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.22.77","url":null,"abstract":"The bactericidal effects of an Nd:YAG laser by using a reaction mediator of TiO2 are described. The laser beam was irradiated to the TiO2 suspension through a quartz optical fiber, and the generated induced dynamic stress was observed in the TiO2 particles which were absorbed by the laser beam. Our previous study demonstrated the bactericidal effect of an Nd:YAG laser due to thermal and induced dynamic stress. The aim of this study was to investigate the effect of different conditions of the Nd:YAG laser on induced dynamic stress. A pulsed Nd:YAG laser (STREAK-I ALTEK Co., Tokyo) and rutile type of TiO2 powder (TIO12PB Kojundo Chemical Lab. Co., Ltd., Saitama) were used. Streptococcus mutans ATCC 25175 was used for this experiment. Bacterial cell suspensions of the strain were irradiated by Nd:YAG laser with several different pulsed energies and times of exposure, then the samples were subjected to SEM investigation. After these treatments, the viable cell count was estimated in each sample under different conditions. Regarding the bactericidal effects of the Nd:YAG laser in the presence of TiO2, there was a significant reduction such as 90-99.9% of viable cells of S. mutans. SEM (JSM-6390LV JEOL Ltd. Tokyo) investigations revealed morphological damage according to the pulse energies and exposure times applied. It is suggested that the bactericidal action occurred as a result of the dynamic stress induced by the Nd:YAG laser irradiation and TiO2 as a reaction mediator.","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120977796","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}
Pub Date : 2010-12-01DOI: 10.5984/JJPNSOCLASERDENT.21.141
英夫 大橋, 一乗 高森, 茂 渡部, 幸生 中村
{"title":"QLF™によるEr:YAGレーザー照射歯面とエア・タービン切削窩洞の観察","authors":"英夫 大橋, 一乗 高森, 茂 渡部, 幸生 中村","doi":"10.5984/JJPNSOCLASERDENT.21.141","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.21.141","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126611725","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}
Pub Date : 2002-03-30DOI: 10.5984/JJPNSOCLASERDENT.13.1
護 熊崎, 佳美 熊崎, 正樹 神原
{"title":"Er: YAGレーザーおよび分子振動レーザーに伴う歯硬組織 (窩洞形成) の剥離","authors":"護 熊崎, 佳美 熊崎, 正樹 神原","doi":"10.5984/JJPNSOCLASERDENT.13.1","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.13.1","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125176471","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}
Pub Date : 1999-06-01DOI: 10.5984/JJPNSOCLASERDENT.10.39
吉生 上田, 一郎 山田, 寿子 小松, 賢二 橋本, 康弘 時田, 正人 杉本
We developed the new colorimetric analysis system with the KOITO white light laser. The KOITO white light laser is a hollow cathode He-Cd laser device that simultane ously oscillates three light laser beams of three primary colors (red, green, blue) from a single laser tube. These beams are formed into a white light laser. In addition, because the oscillation wavelengths of red (635.5 nm, 636 nm), green (533.7 nm, 537.8 nm), blue (441.6 nm) color light are very near the ideal three primary colors.This system has three character. First character is non-contact type without integral sphere. Second is using pen-type probe which contain the bundle type fiber. Third is recording the rate to three colors in the standard reflex light.We examined the efficacy of this colorimetric analysis system with experimental study and clinical cases. On the other hand, we improved this system in the diagnosis of oral malignant tumor.Using this system, we could measure the color disorders in the oral cavity non-invasively, easily, immediately, exactly. Moreover we performed spectral analysis in patients with an oral squamous cell carcinoma. We found that there were bimodal peak at 650 and 690 nm at the excitation wavelength of 441.6 nm and that this result is different from the normal autofluorescenc.We consider that this coloriometric analysis system is useful to measure the color disorders in the oral cavity and has possibility to be improved in the diagnosis of oral malignant tumor.
{"title":"White Light Laser測色法による口腔病変の分析","authors":"吉生 上田, 一郎 山田, 寿子 小松, 賢二 橋本, 康弘 時田, 正人 杉本","doi":"10.5984/JJPNSOCLASERDENT.10.39","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.10.39","url":null,"abstract":"We developed the new colorimetric analysis system with the KOITO white light laser. The KOITO white light laser is a hollow cathode He-Cd laser device that simultane ously oscillates three light laser beams of three primary colors (red, green, blue) from a single laser tube. These beams are formed into a white light laser. In addition, because the oscillation wavelengths of red (635.5 nm, 636 nm), green (533.7 nm, 537.8 nm), blue (441.6 nm) color light are very near the ideal three primary colors.This system has three character. First character is non-contact type without integral sphere. Second is using pen-type probe which contain the bundle type fiber. Third is recording the rate to three colors in the standard reflex light.We examined the efficacy of this colorimetric analysis system with experimental study and clinical cases. On the other hand, we improved this system in the diagnosis of oral malignant tumor.Using this system, we could measure the color disorders in the oral cavity non-invasively, easily, immediately, exactly. Moreover we performed spectral analysis in patients with an oral squamous cell carcinoma. We found that there were bimodal peak at 650 and 690 nm at the excitation wavelength of 441.6 nm and that this result is different from the normal autofluorescenc.We consider that this coloriometric analysis system is useful to measure the color disorders in the oral cavity and has possibility to be improved in the diagnosis of oral malignant tumor.","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129463430","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}
Pub Date : 1996-06-01DOI: 10.5984/JJPNSOCLASERDENT.7.67
誠司 荻野, 邦男 粟津, 冨増 多喜夫
{"title":"象牙質に対する自由電子レーザ (FEL) の照射効果","authors":"誠司 荻野, 邦男 粟津, 冨増 多喜夫","doi":"10.5984/JJPNSOCLASERDENT.7.67","DOIUrl":"https://doi.org/10.5984/JJPNSOCLASERDENT.7.67","url":null,"abstract":"","PeriodicalId":187459,"journal":{"name":"Journal of Japanese Society for Laser Dentistry","volume":"15 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114033296","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}
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