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Endodontic management of a C-shaped maxillary first molar with three independent buccal root canals by using cone-beam computed tomography.

Karanxha L, Kim HJ, Hong SO, Lee W, Kim PS, Min KS - Restor Dent Endod (2012)

Bottom Line: Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals.Our study describes a unique C-shaped variation of the root canal system in a maxillary first molar, involving the 3 buccal canals.In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry, Wonkwang University School of Dentistry, Iksan, Korea.

ABSTRACT
The aim of this study was to present a method for endodontic management of a maxillary first molar with unusual C-shaped morphology of the buccal root verified by cone-beam computed tomography (CBCT) images. This rare anatomical variation was confirmed using CBCT, and nonsurgical endodontic treatment was performed by meticulous evaluation of the pulpal floor. Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals. Our study describes a unique C-shaped variation of the root canal system in a maxillary first molar, involving the 3 buccal canals. In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.

No MeSH data available.


Related in: MedlinePlus

Transverse cone-beam computed tomography (CBCT) sections of the maxillary first molar indicate 'C-shaped' or 'horseshoe-shaped' buccal root. The second mesiobuccal canal is not obvious in these sections because of calcification.
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Figure 2: Transverse cone-beam computed tomography (CBCT) sections of the maxillary first molar indicate 'C-shaped' or 'horseshoe-shaped' buccal root. The second mesiobuccal canal is not obvious in these sections because of calcification.

Mentions: After profound anesthesia and rubber dam isolation, temporary restoration was removed. The pulp chamber was rinsed using 2.5% sodium hypochlorite. The evaluation of pulpal floor using an endodontic explorer revealed only 2 obvious canal orifices: mesiobuccal and palatal. Working length of the mesiobuccal and palatal canals was determined using an apex locator (Root ZX, Morita, Tokyo, Japan). The radiograph for determining the working length indicated a possibility of furcal perforation on buccal root (Figure 1b). To rule out the occurrence of perforation and the presence of any additional roots/canals, CBCT imaging of the tooth was performed. Informed consent was obtained from the patient, and a CBCT of the tooth was performed (Alphard VEGA, Asahi Roentgen Ind. Co., Kyoto, Japan) using a tube voltage of 80 kV and tube current of 8 mA. We used the D mode of the CBCT, which has the smallest field of view (FOV) covering only 2 to 3 teeth. All protective measures were taken to protect the patient from scattered radiation. Transverse slices of the tooth were obtained at different levels to determine the mesiobuccal and distobuccal canal morphology (Figure 2). The buccal root showed 3 root canals in the C-shaped root that extended from the cervical third up to the junction of the middle and apical third.


Endodontic management of a C-shaped maxillary first molar with three independent buccal root canals by using cone-beam computed tomography.

Karanxha L, Kim HJ, Hong SO, Lee W, Kim PS, Min KS - Restor Dent Endod (2012)

Transverse cone-beam computed tomography (CBCT) sections of the maxillary first molar indicate 'C-shaped' or 'horseshoe-shaped' buccal root. The second mesiobuccal canal is not obvious in these sections because of calcification.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3569404&req=5

Figure 2: Transverse cone-beam computed tomography (CBCT) sections of the maxillary first molar indicate 'C-shaped' or 'horseshoe-shaped' buccal root. The second mesiobuccal canal is not obvious in these sections because of calcification.
Mentions: After profound anesthesia and rubber dam isolation, temporary restoration was removed. The pulp chamber was rinsed using 2.5% sodium hypochlorite. The evaluation of pulpal floor using an endodontic explorer revealed only 2 obvious canal orifices: mesiobuccal and palatal. Working length of the mesiobuccal and palatal canals was determined using an apex locator (Root ZX, Morita, Tokyo, Japan). The radiograph for determining the working length indicated a possibility of furcal perforation on buccal root (Figure 1b). To rule out the occurrence of perforation and the presence of any additional roots/canals, CBCT imaging of the tooth was performed. Informed consent was obtained from the patient, and a CBCT of the tooth was performed (Alphard VEGA, Asahi Roentgen Ind. Co., Kyoto, Japan) using a tube voltage of 80 kV and tube current of 8 mA. We used the D mode of the CBCT, which has the smallest field of view (FOV) covering only 2 to 3 teeth. All protective measures were taken to protect the patient from scattered radiation. Transverse slices of the tooth were obtained at different levels to determine the mesiobuccal and distobuccal canal morphology (Figure 2). The buccal root showed 3 root canals in the C-shaped root that extended from the cervical third up to the junction of the middle and apical third.

Bottom Line: Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals.Our study describes a unique C-shaped variation of the root canal system in a maxillary first molar, involving the 3 buccal canals.In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry, Wonkwang University School of Dentistry, Iksan, Korea.

ABSTRACT
The aim of this study was to present a method for endodontic management of a maxillary first molar with unusual C-shaped morphology of the buccal root verified by cone-beam computed tomography (CBCT) images. This rare anatomical variation was confirmed using CBCT, and nonsurgical endodontic treatment was performed by meticulous evaluation of the pulpal floor. Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals. Our study describes a unique C-shaped variation of the root canal system in a maxillary first molar, involving the 3 buccal canals. In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.

No MeSH data available.


Related in: MedlinePlus