Efficacy of a new jet nozzle for removal of carious dentin with an air abrasion system
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概要
- 論文の詳細を見る
A new version of an air abrasion device, which expelled abrasive sodium bicarbonate powder, was fabricated to remove carious tissue. This device had a motor-driven mechanism to control the amount of powder expelled. The purpose of this study was to estimate the abrading efficacy of this device, in particular the new jet nozzle, for removal of carious dentin. Powder was supplied to the handpiece by a rotary gear attached to the powder control motor. Two types of jet nozzles, a cylinder-type and a bugle-type, were fabricated and evaluated. The duct of bugle-type nozzle had an isthmus to increase the air pressure on the powder and to spread it out in a cone-shaped flow. Results obtained showed that the bugle-type jet nozzle exhibited a more prominent abrasive capability. Compared to the cylinder-type nozzle, it was thus more effective in removing the carious dentin which remained in the undercut region of the cavities.
著者
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SHIMIZU Akihiko
Department of Cardiovascular Medicine, Yamaguchi University Graduate School of Medicine
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ABE Tetsuya
Department of Thoracic Surgery, Aichi Cancer Center Hospital
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Hasegawa Makoto
Department of Sleep-Related Respiratory Disorders, Graduate School, Tokyo Medical and Dental Univers
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Shimizu Akihiko
Department Of Dentistry And Oral Surgery Hyogo College Of Medicine
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Honda Kosuke
Department Of Dentistry And Oral Surgery Hyogo College Of Medicine
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KINOSHITA Naoto
Department of Dentistry and Oral Surgery, Hyogo College of Medicine
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Shimizu Akihiko
Department Of Cardiovascular Medicine Yamaguchi University Graduate School Of Medicine
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Hasegawa Makoto
Department Of Applied Photonics System Technology Chitose Inst. Of Science And Technology
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Kinoshita Naoto
Department Of Dentistry And Oral Surgery Hyogo College Of Medicine
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Abe Tetsuya
Department Of Biochemistry School Of Medicine University Of Occupational And Environmental Health
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Abe Tetsuya
Department Of Dentistry And Oral Surgery Hyogo College Of Medicine
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Hasegawa Makoto
Department Of Dentistry And Oral Surgery Hyogo College Of Medicine
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Shimizu Akihiko
Department of Applied Chemistry, Faculty of Engineering, Osaka City University
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