Preliminary Analysis of the Canal Configuration of Taiwanese Anterior Teeth through Radiovisiographic Image

中國醫藥大學機構典藏 China Medical University Repository, Taiwan > 牙醫學院 > 牙醫學系暨碩博士班、口腔醫學產業碩士班 > 會議論文 > Item 310903500/19708

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題名:	Preliminary Analysis of the Canal Configuration of Taiwanese Anterior Teeth through Radiovisiographic Image
作者:	涂明君(Tu,Ming-Gene);(鄭家俊);簡華宏(Chien,Ben Hua-Hong)
貢獻者:	醫學院牙醫學系;中國附醫牙醫部
日期:	2004-12-15
上傳時間:	2009-09-07 09:28:24 (UTC+8)
摘要:	The digital x-ray images are gradually becoming the main trend in dental practice which enable the doctor to “zoom in” on a specific area through post-processing ofthe image and provides less radiation, environmental pollution and a film-less dental clinic. However, among studies in root morphology and canal configuration：vertical sectioning, horizontal sectioning, microscopic investigation were most usedmethods.Some people studied canal configuration by traditional film-based radiographs.The purpose of this study is to investigate the working length and tapering configuration of the canals in Taiwanese anterior teeth through digital X-ray images and offers clinicians the reconsideration of canal cleaning and shaping in endodonitc therapy.A total of 120 extracted teeth were divided into four groups as maxillary, mandibularcentral incisors； maxillary cuspids and mandibular cuspids. All the teeth were rinsedand cleaned and placed in alignment with Rinn cone indicator. Radiovisiographs weretaken (“Poo Yee” X-ray Unit; Model: PY-70C; Dentsply Gendex visilux II)from anteroposterior and proximal view. The whole images were stored and processedby Dentsply Gendex VixWin 2000 v1.9. Measurements including the total tooth length,the major diameter and minor diameter of root canals, the tapering angle drawn fromthe apex to both apical third and cervical line crosses the root canals. The results oftooth length in Taiwanese are coincided to Asian population. The ratio of Max/minor diameter is 1.2-1.8. The tapering angle of each tooth from the apex to apical thirdless than 6% angulations in A-P view, but a nearly 12% angulations found in proximalview in mandibular incisors. The preliminary data reveals that the lower incisors mayrequire No. 30 and at least 0.12 tapered files instrumentation in order to obtain circumferential cleaning and shaping of the canals in Taiwanese teeth. Further studyand evaluation should be needed.
關聯:	第五屆亞洲區口腔顎顏面放射線研討會
顯示於類別:	[牙醫學系暨碩博士班、口腔醫學產業碩士班] 會議論文

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