Micro–computed Tomographic Evaluation of the Prevalence, Distribution, and Morphologic Features of Accessory Canals in Chinese Permanent Teeth

Xu, Ting; Fan, Wei; Tay, Franklin R.; Fan, Bing

doi:10.1016/j.joen.2019.04.001

Cited by 18 publications

(18 citation statements)

References 29 publications

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“…Consequently, no chemomechanical preparation reaches the ARs space. According to previous studies, ARs are predominantly located at the apical region in all dental groups (3,4). In the present study, it was observed that most ARs were located at 1 mm and 2 mm from the main foramen.…”

Section: Discussionsupporting

confidence: 72%

“…The prevalence of apical ramifications (ARs) in human permanent teeth varies among populations and according to the methodology used to assess them. Thus, previous studies reported that the prevalence of ARs ranged from 17.1% to 75% (3)(4)(5).…”

Section: Introductionmentioning

confidence: 97%

“…ARs connect the main canal to the periodontal ligament and, as they are unlikely to be cleaned with conventional instrumentation and irrigation, biofilms may grow and cause periapical diseases (5,6). Hence, knowledge about the prevalence of irregularities in the apical region of different groups of teeth may guide the need for more specific procedures such as correct determination of the working length, agitation of irrigating solutions, and filling of ARs using an adequate obturation technique, in order to prevent an inflammatory response or treatment failure (7,8) Considering the impact of root canal anatomy on endodontic therapy, several studies using different evaluation methods, such as histology, clearing technique, scanning electron microscopy, cone beam computed tomography and microcomputed tomography (micro-CT), have been performed (4,9,10). Micro-CT has been widely used for the analysis of root canal systems due to its nondestructive nature, three-dimensionality, and high spatial resolution, which allows to evaluate subtle aspects of root canal anatomy (11,12).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Ramifications in the Apical Region of Root Canals: A Micro-CT Study in a Brazilian Population

et al. 2020

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The present study used microcomputed tomography (micro-CT) images to assess the prevalence, number, and location of apical ramifications (ARs) in the root canals of different dental groups in a Brazilian population. Three hundred and sixty-seven extracted human teeth, totaling 475 roots, were scanned by micro-CT at 19.6 µm spatial resolution. The obtained images were evaluated by two observers in consensus, and a descriptive analysis was performed to verify the prevalence, number, and location of ARs in each dental group. Chi-square test was used to compare the prevalence of ARs in different types of roots, and one-way analysis of variance compared the number of ARs in the apical 1 mm, 2 mm, and 3 mm of the root. Significance level was established at 5% (α=0.05). ARs were present in 253 (53.3%) of the 475 roots evaluated. A total of 607 ARs were detected, with the vast majority (530) located at one and two millimeters from the main foramen. The highest prevalence of ARs was observed in maxillary canines (65%); maxillary premolars - single-rooted (83.3%), buccal root (80%), and palatine root (73.3%); mandibular premolars (64.2%); mesiobuccal root of maxillary molars (76.6%); and mesial root of mandibular molars (66.6%). For the Brazilian population, most of the ARs are located in the apical 1 and 2 mm of the root, with greater prevalence in the posterior teeth and maxillary canines. These findings suggest the need for additional attention while planning endodontic treatments, including strategies to effectively clean and fill the apical region.

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Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Assessment of Ramifications in the Apical Region of Root Canals: A Micro-CT Study in a Brazilian Population

et al. 2020

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“…2015), canal isthmuses (Keleş & Keskin 2018), accessory canals (Xu et al . 2016, 2019) and root canal anomalies (Gu 2011, Zhang et al . 2014).…”

Section: Introductionmentioning

confidence: 99%

Application of a new system for classifying root and canal anatomy in studies involving micro‐computed tomography and cone beam computed tomography: Explanation and elaboration

et al. 2021

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Adequate knowledge and accurate characterization of root and canal anatomy is an essential prerequisite for successful root canal treatment and endodontic surgery. Over the years, an ever‐increasing body of knowledge related to root and canal anatomy of the human dentition has accumulated. To correct deficiencies in existing systems, a new coding system for classifying root and canal morphology, accessory canals and anomalies has been introduced. In recent years, micro‐computed tomography (micro‐CT) and cone beam computed tomography (CBCT) have been used extensively to study the details of root and canal anatomy in extracted teeth and within clinical settings. This review aims to discuss the application of the new coding system in studies using micro‐CT and CBCT, provide a detailed guide for appropriate characterization of root and canal anatomy and to discuss several controversial issues that may appear as potential limitations for proper characterization of roots and canals.

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“…The data obtained from these parameters can be exported (in an excel spreadsheet or other package) and plotted on graphs to provide information for the whole canal. Ellipticity is the degree of deviation from circularity (Xu et al, 2016), and tortuosity is defined as the ratio of the actual length of the flow path to the shortest distance between the beginning and the end of the flow path (Xu et al, 2016)-both parameters have been used for geometric analysis of accessory canals (Xu et al, 2016(Xu et al, , 2019) (Figure 22).…”

Section: B) Micro-computed Tomography (Micro-ct)mentioning

confidence: 99%

A critical analysis of laboratory and clinical research methods to study root and canal anatomy

Ahmed

2022

Int Endodontic J

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The technical execution of root canal treatment procedures demands a thorough understanding and knowledge of root and canal anatomy. Over the decades, and with the aid of various research methods such as staining and clearing, 2D radiographic imaging, sectioning procedures, cone beam computed tomography and micro‐computed tomography, many laboratory and clinical studies have been undertaken to understand the root and canal anatomy of the human dentition. This has resulted in a tremendous increase in the body of knowledge with a wide range of qualitative and quantitative presentations of the root and canal anatomy. This review aims to provide a critical analysis for the laboratory and clinical research methods in root and canal anatomy studies. In addition, it aims to identify existing gaps and present insights for directions of future research and ways for translation to clinical endodontics.

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Micro–computed Tomographic Evaluation of the Prevalence, Distribution, and Morphologic Features of Accessory Canals in Chinese Permanent Teeth

Cited by 18 publications

References 29 publications

Assessment of Ramifications in the Apical Region of Root Canals: A Micro-CT Study in a Brazilian Population

Assessment of Ramifications in the Apical Region of Root Canals: A Micro-CT Study in a Brazilian Population

Application of a new system for classifying root and canal anatomy in studies involving micro‐computed tomography and cone beam computed tomography: Explanation and elaboration

A critical analysis of laboratory and clinical research methods to study root and canal anatomy

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