Use of CBCT to identify the morphology of maxillary permanent molar teeth in a Chinese subpopulation

Zhang, R.; Yang, Haibing; Yu, Xijiao; Wang, H.; Hu, Tao; Dummer, P. M. H.

doi:10.1111/j.1365-2591.2010.01826.x

Cited by 203 publications

(225 citation statements)

References 43 publications

(58 reference statements)

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“…In this study, we found that 69.23% of samples had four canals including MB 2 and 30.77% of teeth had three canals, which were relatively similar to the findings of Park (65.2%) (33), Thomas (68%) (14), Degerness (78.8%) (34), Yoshioka (66.32%) (35), Alavi (67.8%) (12), Al Shalabi (78%) (13) and Ng (68%) (11). However, Zhang (36) and Zheng (37) obtained different results of MB 2 in Chinese population using CBCT. They reported 52% and 50%, respectively, which were lower than the result of this study.…”

Section: Discussionsupporting

confidence: 76%

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Faramarzi¹,

Vossoghi²,

Shokri³

et al. 2015

Avicenna J Dent Res

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Background:The success of endodontic treatment depends on detection of all root canals so that they could be cleaned, shaped and obturated appropriately. To achieve this, it is essential to know root canals complexities such as the number of canals and types of each root canal, which are genetically determined. Besides, the highest failure rates occur in maxillary first molars. Objectives: Therefore, the aim of this study was to investigate the root and canal morphology of maxillary first molars in an Iranian population using cone-beam computed tomography (CBCT). Materials and Methods: In this study, images of 156 extracted maxillary first molars placed in the waxed blocks were produced using CBCT. Two professional investigators checked images by NNT software in New Tom 3G system. Axial view and cross section of 1 mm thickness were used. The number of roots, canals, each roots canal, MB 1 -MB 2 orifice distances and canal types of the Vertucci classification were recorded. Finally, data was analyzed using SPSS16 software. Results: We found 100% of cases with three separated roots, from which 69.23% had four canals including MB 2 and 30.77% with three canals. 71.3% of mesiobuccal roots were two canals of type two Vertucci and 28.7% type 4 with the mean distance value of 2.55 ± 0.57 mm between MB 1 and MB 2 orifice. Conclusions: Most extracted maxillary first molars were three rooted and four canals. CBCT has relatively high reproducibility and accuracy of distinguishing MB 2 canal.

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Section: Discussionsupporting

confidence: 76%

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Faramarzi¹,

Vossoghi²,

Shokri³

et al. 2015

Avicenna J Dent Res

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“…The high prevalence of the type III configuration, which is a typical Mongoloid trait, 28 conforms to the findings of earlier studies in east and south Asian, Indian, and Mexican populations. 3,5,6,12,22,23,[28][29][30] These are in contrast to the results obtained in caucasian teeth, 4,11 where most MB2 canals join the main MB canal and both exit through apical foramen. These differences in the prevalence of MB2 canals or canal configurations can be attributed to multiple factors, such as the study design (clinical or laboratory), method of canal identification, racial differences in the sample under investigation, and age of the subject or tooth.…”

Section: Discussioncontrasting

confidence: 72%

Minimum-intensity projection for in-depth morphology study of mesiobuccal root

Lee²,

Spångberg

et al. 2011

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, an

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“…This is in contrast to the results obtained by Silva et al (2014), with frequencies of 42.65% for the maxillary first molar and 34.32% for the second molar, and those obtained by Reis et al (2013), with 91% and 79.3% for the first and second molar, respectively. These differences in frequency reveal the anatomical variability of the mesial root in maxillary molars, which could be explained by the sample size, the observation technique (Peeters et al, 2011) and the patients' ethnicity (Cleghorn et al;Zhang et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

Abarca

Gómez²,

Zaror

et al. 2015

Int. J. Morphol.

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SUMMARY:The aim of this study was to assess the morphology of the mesial root canal system of maxillary molars and the frequency of MB2 canals using cone-beam computed tomography (CBCT). A total of 1374 teeth, first maxillary (1MS, n= 802) and second maxillary molars (2SM, n= 572) of 508 Chilean patients between 8 to 77 years were evaluated through CBCT. The mesiobuccal root was evaluated in all three thirds. Root canal morphology was classified according to Vertucci's method. Data were analyzed by Pearson's Chi-square and Cuzick trend tests. MB2 canal frequency in 1MS was 73.44% and in 2MS 42.48%. The most frequent morphology in 1MS and 2MS were Vertucci type II and I, respectively. No statistically significant association was found between frequencies and side or according to gender (P>0.05). A positive association was found as the age increased in both 1MS and 2MS (P<0.001 and P= 0.023, respectively). Given the anatomical complexity of the mesiobuccal root and the frequent presence of the MB2 canal, the clinician must assume the existence of two canals in this root. CBCT scanning is a good way to initially identify this canal in the different root thirds.

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Use of CBCT to identify the morphology of maxillary permanent molar teeth in a Chinese subpopulation

Cited by 203 publications

References 43 publications

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Minimum-intensity projection for in-depth morphology study of mesiobuccal root

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

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