Canal configuration of the mesiobuccal root of the maxillary first molar of a Japanese sub‐population

Weine, Franklin S.; Hayami, S.; Hata, Gin-ichiro; Toda, Tadao

doi:10.1046/j.1365-2591.1999.00186.x

Cited by 115 publications

(114 citation statements)

References 11 publications

(10 reference statements)

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“…These reports depended on classic destructive examinations and were intended primarily for morphological classification. Weine et al 22) conducted observations based on new clinical criteria added to his own classification of root canals into 4 types 23) . The authors conducted pulp chamber opening and defined main root canal ramifications as root canals into which files could be inserted until they were seen at the root apex.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional Analysis of Mesiobuccal Root Canal of Japanese Maxillary First Molar Using Micro-CT

Yamada

Ide

Matsunaga

et al. 2011

Bull. Tokyo Dent. Coll.

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The objective of this study was to three-dimensionally observe the morphological characteristics of mesiobuccal root canals of Japanese maxillary first molars using microcomputed tomography (Micro-CT) and classify root canal variations. This study used 90 maxillary first molars. Three-dimensional reconstruction was performed using data obtained by Micro-CT, and cross-sections of the root canals were observed. Moreover, the root canal morphology was classified by the configuration and root canal diameter, and was evaluated for occurrence using the classification by Weine et al. (1969) as a reference. Overall, single root canals were observed in 44.4%, incomplete separation root canals in 22.3%, and completely separate root canals (upper and lower separation root canals) in 33.3%. Mesiobuccal root canals often had intricate configurations, and accessory root canals (lateral canals and apical ramifications) were observed in most of the mesiobuccal root canals (76.7%), irrespective of whether there were ramifications of the main root canals. While there were no marked differences in the incidence of root canal ramifications between this study and earlier reports, the incidence of accessory root canals was higher in this study. This result may be explained by the far more superior visualization ability of Micro-CT than conventional methods, which allowed the detection of microscopic apical ramifications previously difficult to observe.

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Section: Discussionmentioning

confidence: 99%

Three-dimensional Analysis of Mesiobuccal Root Canal of Japanese Maxillary First Molar Using Micro-CT

Yamada

Ide

Matsunaga

et al. 2011

Bull. Tokyo Dent. Coll.

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“…Due to the wide bucco lingual dimensions of mesiobuccal roots, multiple canals are more common in these roots as compared to the distobuccal and palatal roots (Ahmad & Al-Jadaa, 2014). When treating maxillary first molars, a major cause of endodontic failure is the inability to properly locate, debride, or obturate the additional canals in the mesiobuccal root (Weine et al, 1999). Cleghorn et al (2006) reviewed the studies on the morphology of maxillary first molars and showed that 57 % of mesibuccal roots had 2 or more root canals.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Complex Mesiobuccal Root Anatomy in Maxillary First Molar Teeth

Kaya-Büyükbayram

Kartal

2018

Int. J. Morphol.

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KAYA-BÜYÜKBAYRAM, I. & KARTAL, N.Evaluation of complex mesiobuccal root anatomy in maxillary first molar teeth. Int. J. Morphol., 36(2):460-464, 2018. SUMMARY:The objective of this study was to investigate the complex anatomy of mesiobuccal roots, supporting and complementing commonly applied clearing technique, using access cavity modification and the pulpal groove deepening method. Three hundred and ninety eight extracted intact human maxillary first molars were included in this study. Firstly, modified rhomboidal shape access cavities were prepared then, the developmental groove between the mesiobuccal and the palatal canals was deepened 1 mm with a round slow speed bur. Indian ink was injected into both the canal orifices of mesiobuccal roots and into the groove between mesiobuccal and palatal canals, using a 22 gauge syringe. Then the clearing technique was applied. The incidence of one canal was 30.90 %, two canals was 62.07 %, three canals was 7.03 %. In twenty five (6.28 %) of the mesiobuccal roots, 8 root canal types, which are not included in Vertucci's classification, were seen. All these root canal types had three root canals. The establishment of adequate access and deepening of the pulp chamber floor increased the probability of locating the third canal in the mesiobuccal root of maxillary first molars.

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“…The subsequent elements contribute to the variation found in root canal system of maxillary first molar, namely ethnic background, age, gender of the population studied, design, and methods of the study. 15,16 Variations in the root canal anatomy concerning distobuccal, distopalatal, and palatal roots are very infrequent (< 1%); nonetheless, their existence should be thoroughly scrutinized. 6 Recent advances in diagnostic technology have led to a paradigm shift, and therefore, CBCT is of paramount importance in dental imaging.…”

Section: Discussionmentioning

confidence: 99%

Management of Maxillary First Molar with Six Canals using Cone Beam Computed Tomography

Madan¹,

Gwalani²

2017

Journal of Operative Dentistry &Amp; Endodontics

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The probability of morphologic variations in a tooth should never be misconstrued and the cognition of these variations is the cue to successful endodontic treatment. The form, configuration, and number of root canals in maxillary first molar have been studied for more than half a century. An anatomic variation like three canals in the distal root of maxillary first molar is not frequently reported. Apart from a properly designed access cavity, well-angulated radiographs, and routine use of loupes, the practitioner should consider using cone beam computed tomography as an auxiliary method for detecting complex root canal anatomy. This clinical case report presents the successful management of maxillary first molar with six root canals with the use of computed tomography scans as a diagnostic aid. Key Messages:The incidence of second distobuccal canal ranges from 1.64 to 9.5%. However, the incidence of third distal canal (distopalatal) is rare (<1%). This report highlights the importance of computed tomography in the successful diagnosis and management of maxillary first molar.

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Canal configuration of the mesiobuccal root of the maxillary first molar of a Japanese sub‐population

Abstract: The proportion of cases with two canals in the mesiobuccal root of maxillary first molars from Japanese patients was high and similar to that described from studies of other ethnic populations.

Cited by 115 publications

References 11 publications

Three-dimensional Analysis of Mesiobuccal Root Canal of Japanese Maxillary First Molar Using Micro-CT

Three-dimensional Analysis of Mesiobuccal Root Canal of Japanese Maxillary First Molar Using Micro-CT

Evaluation of Complex Mesiobuccal Root Anatomy in Maxillary First Molar Teeth

Management of Maxillary First Molar with Six Canals using Cone Beam Computed Tomography

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