Assessment of the Second Mesiobuccal Root Canal in Maxillary First Molars: A Cone-beam Computed Tomographic Study

Zhang, Yuerong; Xu, Hai; Wang, Dongmiao; Gu, Yongchun; Wang, Juan; Tu, Shuzhen; Qiu, Xiaohui; Zhang, Fuyu; Luo, Yao; Xu, Shi Qiong; Bai, Jianling; Grandini, Simone; Zhang, Guangdong

doi:10.1016/j.joen.2017.06.021

Cited by 57 publications

(57 citation statements)

References 31 publications

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“…For this reason, it is very important to know and use additional tools to help diagnose MB2 canal detection. The incidence of MB2 canals in 1MMs and 2MMs varies from 8.0% to 96.1% [4,35,47,[55][56][57]. In this study, the prevalence of MB2 was 18.75%, which is lower than some studies [4,7,12,31,38,42].…”

Section: Discussioncontrasting

confidence: 62%

“…Neaverth et al [36] stated that the older patients had fewer MB2 canal than younger ones because of an increase in the canal calcification, tertiary dentin formation and porosity of the cortical bone. Zhang et al [57] said that secondary dentin deposition separated a flattened canal into two canals or even create a calcified imperforate canal. In the present study, it was found that as the age progressed, the prevalence of MB2 decreased (p < 0.01), which is consistent with the results of Neaverth et al [36], Thomas et al [48], Betancourt et al [7] and Zhang et al [57].…”

Section: Discussionmentioning

confidence: 99%

“…Zhang et al [57] said that secondary dentin deposition separated a flattened canal into two canals or even create a calcified imperforate canal. In the present study, it was found that as the age progressed, the prevalence of MB2 decreased (p < 0.01), which is consistent with the results of Neaverth et al [36], Thomas et al [48], Betancourt et al [7] and Zhang et al [57]. For this reason, we recommend that the maxillary molar teeth be directed more attention to seeking and finding MB2 canals in the MB roots, especially in young patients.…”

Section: Discussionmentioning

confidence: 99%

“…We measured at 1 mm below the pulpal floor level. Zhang et al [57] reported that a larger distance ratio of MB1-PP to distobuccal (DB)-PP (> 1.26) indicated a highly probable existence of an MB2 canal. They stated that CBCT imaging with a small voxel size is particularly important in determining the presence of an MB2 canal if clinicians fail to locate it.…”

Section: Discussionmentioning

confidence: 99%

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Prevalence of second canal in the mesiobuccal root of permanent maxillary molars from a Turkish subpopulation: a cone-beam computed tomography study

Mağat

Hakbilen

2019

Folia Morphol

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Background: Permanent maxillary molar teeth have the most complex root and canal systems. This study aimed to determine the frequency and the localisation of secondary mesiobuccal canal (MB2) in the mesiobuccal roots of permanent maxillary molars in a Turkish subpopulation using cone-beam computed tomography (CBCT) and compare them by different age groups and gender. Materials and methods: In this retrospective study, a total of 800 maxillary molar teeth in 200 subjects were investigated. The distances between canals were calculated from the centre point of the MB2 canal (PMB2) to the centre point of the mesiobuccal canal (PMB1) and the centre point of the palatal canal (PP). Results: The incidence of MB2 canals was found to be 33.5% (23.2% in females, 43.6% in males) in 200 subjects. A significant difference was found between age groups and genders in terms of the frequency of MB2 (p < 0.05). The distances between PMB1-PMB2 were 2.95 ± 0.58 mm, 3.08 ± 0.67 mm for 1MM and 2MM, respectively. For 1MM and 2MM, the averages of PMB2-PP distances were 5.81 ± 1.09 mm and 5.55 ± 1.09 mm, respectively. The contralateral formation of the MB2 canals was 90.5% (16, 26) in the first molars and 93.9% in the second molars (17, 27). The contingency rate in the first quadrant was 86.0% (16, 17) and 83.5% (26, 27) in the second quadrant. Conclusions: It is important for the clinician to know the high probability of finding the MB2 canal in the maxillary first and second molars. CBCT imaging can facilitate the clinician to detect complex and variable root canal anatomy.

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Section: Discussioncontrasting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Prevalence of second canal in the mesiobuccal root of permanent maxillary molars from a Turkish subpopulation: a cone-beam computed tomography study

Mağat

Hakbilen

2019

Folia Morphol

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“…The anatomical complexity of the root canal system is the main challenge for the endodontic therapy (Ghasemi et al, 2017), preventing its completely cleaning and disinfection processes. To overcome this limitation, endodontics had a great evolution in the last century and managed to have a high degree of development not only in its biological bases but also in the development of techniques, instruments, solutions and materials (Borges et al, 2017;Duque et al, 2017;Kato et al, 2016;Zhang et al, 2017). These technological advances have enabled new techniques to facilitate clinical work and provide a quicker, safer, and more effective therapy (Plotino, Grande, Sorci, Malagnino, & Somma, 2007).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of chemical and morphological changes in radicular dentin after different final surface treatments

Lopes

Roperto

Akkus

et al. 2018

Microscopy Res & Technique

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The aim of this study was to evaluate the chemical and morphological effects of different lasers as a final surface treatment for endodontic therapy through energy dispersive X‐ray spectroscopy (EDS) and scanning electron microscopy (SEM) respectively. Twenty‐five maxillary canines were selected and instrumented with K3 system. Roots were randomly distributed into five groups (n = 5) according to the surface treatment: GI (distilled water), GII (NaOCl + EDTA), GIII (NaOCl + EDTA + 980 nm diode laser), GIV (NaOCl + EDTA+ 1,064 nm Nd:YAG laser), and GV (NaOCl + EDTA+ 2,780 nm Er, Cr:YSGG laser). Lasers were applied for 20 s and samples were bisected, exposing the treated surface and then subjected to elements quantification by EDS and morphological evaluation by scanning electron microscope (SEM). EDS data were submitted to ANOVA‐two way, and SEM scores were submitted to two‐way Kruskal–Wallis and Dunn's tests. The EDS analysis showed no difference for the chemical elements and Ca/P ratio between groups (p > .05). Statistical analysis showed more intense results for GV and less intense results for GI (p < .05). The GIII showed an amorphous organic matrix surface, while GV provided greater removal of intertubular dentin forming craters, and GIV promoted dentin fusion. The EDS method used in this study was not able to verify any chemical changes in root canal dentin; Nd:YAG, Er, Cr:YSGG, and 980 nm diode laser were capable of modifying the dentin morphology, correlating characteristics features for each one, which are essential clinical knowledge to establish the correct indication for each case. Research Highlights EDS was not able to verify any chemical changes in root canal dentin after 980 nm diode, Nd:YAG and Er;Cr:YSGG laser treatments Nd:YAG, Er, Cr:YSGG, and 980 nm diode laser modified dentin morphology, correlating characteristics features for each one.

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Tooth, Root, and Canal Anatomy

Ahmed¹,

Keleş²,

Martins³

et al. 2022

Endodontic Advances and Evidence‐Based Clinical Guidelines

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Assessment of the Second Mesiobuccal Root Canal in Maxillary First Molars: A Cone-beam Computed Tomographic Study

Cited by 57 publications

References 31 publications

Prevalence of second canal in the mesiobuccal root of permanent maxillary molars from a Turkish subpopulation: a cone-beam computed tomography study

Prevalence of second canal in the mesiobuccal root of permanent maxillary molars from a Turkish subpopulation: a cone-beam computed tomography study

Evaluation of chemical and morphological changes in radicular dentin after different final surface treatments

Tooth, Root, and Canal Anatomy

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