書誌事項
- タイトル別名
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- Application of Er:YAG laser for root canal preparation
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<p>Abstract : The purpose of this study was to evaluate the use of Er:YAG laser in root canal preparation in vitro. Six human extracted lower incisors were used. The root canals were enlarged mechanically up to a size of #35 and then were irradiated by Er:YAG laser (Erwin Adverl, Morita) using two kinds of cone-shaped fiber tips (R200T and R300T). The tip was moved 20 times from the apex to the orifice, at a speed of 1 mm/s, with water spray (8.5 mL/min). The output energy was 30 mJ with a pulse frequency of 25 pps. Before and after laser irradiation, the teeth were scanned by micro computed tomography (μ-CT). Thereafter, three-dimensional images of the teeth were reconstructed and the volume of root canals was calculated. Subsequently, the teeth were split longitudinally and observed under a scanning electron microscope (SEM). It was confirmed that the root canals were enlarged after laser irradiation. The mean rates of increase of root canal spaces were 112.97±3.75% after R200T application, and 148.99±11.15% after R300T application. SEM observation showed that irradiated areas had an undulating wave-like appearance and showed no smear layer. These results show that the Er:YAG laser is an effective tool for root canal preparation.</p>
収録刊行物
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- 日本歯内療法学会雑誌
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日本歯内療法学会雑誌 30 (1), 5-12, 2009
一般社団法人 日本歯内療法学会
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詳細情報 詳細情報について
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- CRID
- 1390001205189460608
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- NII論文ID
- 130006233537
- 10025695180
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- NII書誌ID
- AA11837117
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- ISSN
- 24239429
- 13478672
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可