Analysis of Cause of Endodontic Failure of C-Shaped Root Canals
- 주제(기타) Instruments & Instrumentation; Microscopy
- 설명문(일반) [Kim, Yemi] Ewha Womans Univ, Sch Med, Dent Res Inst, Dept Conservat Dent, Seoul, South Korea; [Lee, Donghee; Kim, Da-Vin; Kim, Sin-Young] Catholic Univ Korea, Coll Med, Seoul St Marys Dent Hosp, Dept Conservat Dent, Seoul, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 WILEY-HINDAWI
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000156514
- 본문언어 영어
- Published As http://dx.doi.org/10.1155/2018/2516832
초록/요약
The purpose of this study was to analyze various characteristics and classification of C-shaped root canals and evaluate the causes of endodontic failure of C-shaped root canals by examining the resected root surface with an endodontic microscope and a scanning electron microscope (SEM). Forty-two teeth with C-shaped root canals were included in this study and had undergone intentional replantation surgery. Before surgery, periapical radiography and cone-beam computed tomography were taken. The root canal configuration was analyzed and classified according to Melton's classification at coronal and apical level. After injection of 1 : 100,000 epinephrine with 2% lidocaine, the tooth was carefully extracted. After the root-end resection, the resected root surface was examined using an operating microscope and SEM. Mandibular second molars were most frequently involved teeth (90.4%). The most frequently observed root canal configurations were C1 at the coronal level (45.2%) and C3 at the apical 3 mm level (45.2%). The most common cause of failure for a C-shaped root canal treatment was a leaky canal (45.2%), followed by an isthmus (23.8%), missing canal, overfilling, and iatrogenic problems. In conclusion, C-shaped root canals were most frequently found in mandibular second molars. The most common cause of failure was a leaky canal and isthmus.
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