TY - JOUR
T1 - Analysis of cause of endodontic failure of C-shaped root canals
AU - Kim, Yemi
AU - Lee, Donghee
AU - Kim, Da Vin
AU - Kim, Sin Young
N1 - Funding Information:
This study was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science, ICT and Future Planning) (no. 2017R1C1B5017098) and Catholic Medical Center Research Foundation made in the program year of 2017.
Publisher Copyright:
Copyright © 2018 Yemi Kim et al. This is an open access article distributed under the Creative Commons Attribution License
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85059269290&partnerID=8YFLogxK
U2 - 10.1155/2018/2516832
DO - 10.1155/2018/2516832
M3 - Article
C2 - 30595786
AN - SCOPUS:85059269290
SN - 0161-0457
VL - 2018
JO - Scanning
JF - Scanning
M1 - 2516832
ER -