1.Endodontic treatment of a C-shaped mandibular second premolar with four root canals and three apical foramina: a case report.
Thikamphaa BERTRAND ; Sahng Gyoon KIM
Restorative Dentistry & Endodontics 2016;41(1):68-73
This case report describes a unique C-shaped mandibular second premolar with four canals and three apical foramina and its endodontic management with the aid of cone-beam computer tomography (CBCT). C-shaped root canal morphology with four canals was identified under a dental operating microscope. A CBCT scan was taken to evaluate the aberrant root canal anatomy and devise a better instrumentation strategy based on the anatomy. All canals were instrumented to have a 0.05 taper using 1.0 mm step-back filing with appropriate apical sizes determined from the CBCT scan images and filled using a warm vertical compaction technique. A C-shaped mandibular second premolar with multiple canals is an anatomically rare case for clinicians, yet its endodontic treatment may require a careful instrumentation strategy due to the difficulty in disinfecting the canals in the thin root area without compromising the root structure.
Bicuspid*
;
Dental Pulp Cavity*
2.In-depth morphological study of mesiobuccal root canal systems in maxillary first molars: review.
Seok Woo CHANG ; Jong Ki LEE ; Yoon LEE ; Kee Yeon KUM
Restorative Dentistry & Endodontics 2013;38(1):2-10
A common failure in endodontic treatment of the permanent maxillary first molars is likely to be caused by an inability to locate, clean, and obturate the second mesiobuccal (MB) canals. Because of the importance of knowledge on these additional canals, there have been numerous studies which investigated the maxillary first molar MB root canal morphology using in vivo and laboratory methods. In this article, the protocols, advantages and disadvantages of various methodologies for in-depth study of maxillary first molar MB root canal morphology were discussed. Furthermore, newly identified configuration types for the establishment of new classification system were suggested based on two image reformatting techniques of micro-computed tomography, which can be useful as a further 'Gold Standard' method for in-depth morphological study of complex root canal systems.
Dental Pulp Cavity
;
Molar
3.Antimicrobial activity of eight root canal sealers before and after setting.
Denny Y FANG ; Woocheol LEE ; Chern H LAI
Journal of Korean Academy of Conservative Dentistry 2002;27(2):207-211
No abstract available.
Dental Pulp Cavity
4.In vivo study on the biocompatibility of new resin-based root canal sealers.
Yong Beom KIM ; Seung Ho BAEK ; Kwang Shik BAE
Journal of Korean Academy of Conservative Dentistry 2002;27(2):122-134
No abstract available.
Dental Pulp Cavity
5.A maxillary canine with two separated root canals: a case report.
Dong Ryul SHIN ; Jin Man KIM ; Duck Su KIM ; Sun Young KIM ; Paul V ABBOTT ; Sang Hyuk PARK
Journal of Korean Academy of Conservative Dentistry 2011;36(5):431-435
Maxillary canines have less anatomical diversities than other teeth. They usually have a single root and root canal. This report describes an endodontic treatment of a maxillary canine with two separated root canals which have not been reported through the demonstration of radiography and computerized tomography (CT). Even though appropriated endodontic treatment has been performed, the severe pain could happen due to lack of consideration of anatomical variations of the teeth. Therefore, the clinicians should be well aware of the possibility of anatomical variations in the root canal system during endodontic treatment even if the number of root canals is obvious such as in this case.
Dental Pulp Cavity
;
Tooth
6.Root canal treatment of a mandibular second premolar with three separate root canals.
Seok Ryun LEE ; Seol Hee SHIN ; Sung Ok HONG ; Chang Kyu SONG ; Hoon Sang CHANG ; Kyung San MIN
Journal of Korean Academy of Conservative Dentistry 2010;35(4):302-305
Mandibular premolars show a wide variety of root canal anatomy. Especially, the occurrence of three canals with three separate foramina in mandibular second premolars is very rare. This case report describes the root canal treatment of an unusual morphological configuration of the root canal system and supplements previous reports of the existence of such configuration in mandibular second premolar.
Bicuspid
;
Dental Pulp Cavity
7.A study of insertion depth of buchanan plugger after shaping using NI-TI rotary files in simulated resin root canals.
Youn Sik PARK ; Dong Jun KIM ; Yun Chan HWANG ; In Nam HWANG ; Won Mann OH
Journal of Korean Academy of Conservative Dentistry 2006;31(2):125-132
This study was conducted to evaluate the insertion depth of Buchanan plugger after shaping by various Ni-Ti rotary files. It was conducted to determine which size of plugger are appropriate, when root canals are shaped with Ni-Ti rotary files and obturated by Continuous wave of condensation technique. Two type of eighty simulated resin blocks were used : J-shaped and straight shaped canal. The simulated canals were instrumented by ProTaper and ProFile. Buchanan pluggers were inserted into the canal, and then the image was recorded to scanner. The distance from the apex of the canal to the plugger tip was measured by image analysis program. Data were analyzed by one-way ANOVA followed by Scheffe's test. The results were as follows 1. In straight canal finished up to ProTaper F2 and F3 file, F and FM pluggers were inserted more than 5 mm short of working length. 2. In J-shaped canal finished up to ProTaper F2 file, F pluggers were inserted more than 5 mm short of working length. Finished up to ProTaper F3 file, F and FM pluggers were inserted more than 5 mm short of working length. 3. In straight and J-shaped canal finished up to ProFile .06/#20 and .06/#25, any of Buchanan plugger could not be inserted more than 5 mm short of working length. These results suggest that canals shaped by ProTaper could be obturated by Continuous wave of condensation technique with F and FM size Buchanan plugger.
Dental Pulp Cavity*
8.The instrument-centering ability of four Nickel-Titanium instruments in simulated curved root canals.
Jae Hoon KU ; Hoon Sang CHANG ; Seok Woo CHANG ; Hwan Hee CHO ; Ji Myung BAE ; Kyung San MIN
Journal of Korean Academy of Conservative Dentistry 2006;31(2):113-118
The aim of this study was to evaluate the ability of newly marketed NRT instruments to maintain the original root canal configuration and curvature during preparation in comparison with the three existing instruments in simulated root canals. Simulated canals in resin blocks were prepared with ProFile, K3, ProTaper, and NRT instrument (n = 10 canals in each case). Pre- and post-operative images were recorded, and assessment of canal shape was completed with a computer image analysis program. The data were analyzed statistically using the One-way ANOVA followed by Duncan's test. The ability of instruments to remain centered in prepared canals at 1-, 2-mm levels was significantly better in ProFile groups than in other groups (p < 0.05). The change of centering ratio in NRT groups at 5-mm level was significantly greater than ProFile group and at 6- and 7-mm level than all other groups (p < 0.05). Although the NRT system was comparable to other systems in regards to its ability to maintain the canal configuration of apical portion, this system was more influenced by the mid-root curvature due to its stainless-steel files for coronal preflaring.
Dental Pulp Cavity*
9.Regional bond strength of dentin bonding systems to pulp chamber dentin.
Sang Hyuk LEE ; Gi Woon CHOI ; Kyoung Kyu CHOI
Journal of Korean Academy of Conservative Dentistry 2004;29(1):13-22
No abstract available.
Dental Pulp Cavity*
;
Dentin*
10.Biocompatibility of root-end filling materials: recent update.
Payal SAXENA ; Saurabh Kumar GUPTA ; Vilas NEWASKAR
Restorative Dentistry & Endodontics 2013;38(3):119-127
The purpose of a root-end filling is to establish a seal between the root canal space and the periradicular tissues. As root-end filling materials come into contact with periradicular tissues, knowledge of the tissue response is crucial. Almost every available dental restorative material has been suggested as the root-end material of choice at a certain point in the past. This literature review on root-end filling materials will evaluate and comparatively analyse the biocompatibility and tissue response to these products, with primary focus on newly introduced materials.
Dental Pulp Cavity