A study of the symmetry of roots and root canal morphology in mandibular anterior teeth using cone-beam computed tomographic imaging in a Polish population

Sroczyk-Jaszczyńska, Magdalena; Kołecki, J; Lipski, Mariusz; Puciło, Michał; Wilk, Grażyna; Falkowski, Anna L.; Kot, Katarzyna; Nowicka, Alicja

doi:10.5603/fm.a2019.0128

Cited by 18 publications

(41 citation statements)

References 30 publications

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“…Of these, 2219 were removed because of their being duplicates or not related to the study. Of the remaining 71 studies, 52 were removed due to lack of relevance, not using CBCT as their diagnostic methodology, or being in vitro trials, case studies or systematic reviews, leaving a total of 19 studies [8,14,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] (Figure 3. Flowchart).…”

Section: Characteristics Of the Studiesmentioning

confidence: 99%

“…When there were two canals, the most frequent classification was type III, with the exception of four studies [8,22,23,35]. There was no heterogeneity as to the frequency of the rest of configurations, with studies where the next most frequent configurations were type II [14,23,26,27,30,33,34], type V [8,[19][20][21]24,25,28,29,32], or type IV [31]. The remaining types [VI, VII and others] were generally present in very low or non-existent percentages.…”

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

“…The remaining types [VI, VII and others] were generally present in very low or non-existent percentages. Five studies reported symmetry between the incisors on the right and left side of the patient [8,19,20,23,26,33]. Lateral incisors showed a higher prevalence in the existence of a second canal compared to central incisors in fourteen studies [7,14,[20][21][22]25,[27][28][29][31][32][33][34][35].…”

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

“…Lateral incisors showed a higher prevalence in the existence of a second canal compared to central incisors in fourteen studies [7,14,[20][21][22]25,[27][28][29][31][32][33][34][35]. The central incisor had a higher prevalence in only three [19,23,26]. Likewise, we calculated the weighted average of all the percentages in the existence of a second canal, obtaining 17.2% in the central and 23.7% in the lateral incisors.…”

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

“…The remaining studies did not assess patient age or, if so, did not find any significant differences [8,30]. Regarding gender influence, there was no unanimity as to a higher prevalence of second canals in men [19,20,24,31] than in women [27,29], and there were even certain studies where no significant differences were found [8,22,25,30,34,35]. Geographical distribution indicated a lower incidence of a second canal in the Chinese population [14,29,[32][33][34].…”

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

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Root Canal Morphology of the Permanent Mandibular Incisors by Cone Beam Computed Tomography: A Systematic Review

et al. 2020

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Knowledge of dental anatomy through the assessment of the anatomic variations of each tooth’s root canal system is essential to undertake endodontic therapy. The aim of this systematic review was to analyze the different studies on the internal morphology of permanent mandibular incisors where Cone-Beam Computed Tomography (CBCT) X-ray imaging is used. Pubmed, CENTRAL, Wiley Library and Web of Science electronic databases were searched for scientific studies included until March 2020. The terms used in the search were: “permanent mandibular incisors”, “root canal morphology” and “cone-beam computed tomography”. The search was limited to studies whose aim was the analysis of the morphology of the root canal system evaluating the parameters of methodology, population, sample, number and configuration. A total of 19 studies met the inclusion criteria. There was a noticeable lack of unanimity in the setting adjustments of each of the CBCT devices used. The presence of two root canals varied from 0.4% to 45%. The most frequent configurations were Vertucci’s Types I, III, II, V, IV, VII and VI. Type VIII configuration was non-existent. CBCT revealed the existence of anatomical symmetry patterns, and there was no unanimity of criteria regarding the presence of a second root canal. Results concerning the presence of a second root canal in the mandibular incisors differ widely, with a possible influence of the geographic area where the study was conducted. The prevalence of a second canal is higher in mandibular lateral incisors than in mandibular central incisors. There was no direct relationship between voxel size (0.125–0.3 mm) and increased prevalence of a second canal.

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Section: Characteristics Of the Studiesmentioning

confidence: 99%

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

Section: Synthesis Of Studies Includedmentioning

confidence: 99%

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Root Canal Morphology of the Permanent Mandibular Incisors by Cone Beam Computed Tomography: A Systematic Review

et al. 2020

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Morphometric micro-CT study of contralateral mandibular incisors

Sevgi,

Johnsen,

Hussain

et al. 2023

Clin Oral Invest

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Objectives This study aimed to determine the degree of similarity and symmetry in the anatomy of contralateral mandibular incisors. Three-dimensional (3D) models of extracted teeth were obtained from microtomography (micro-CT) scans. Qualitative and quantitative assessments of the morphology and comparison of contralateral pairs were made. The null hypothesis was that contralateral mandibular incisors could not be considered identical in simple morphometric measurements. Methods Sixty pairs of mandibular incisors were extracted from 30 patients and scanned with micro-CT. Virtual models of the cemento-enamel junction to the root apex were rendered. Parameters such as length, canal width, dentinal thicknesses, tortuosity, centerline length, accessory canals, root canal configurations, and root canal orifice cross-sections were used to compare the teeth. Width and thickness comparisons between paired teeth in the same individual were made by paired t-test (Wilcoxon signed-rank test for variables not normally distributed). An online randomization tool generated randomized pairs (independent of the individual/patient). Subsequently, an unpaired t-test (or Mann–Whitney U test for non-normally distributed parameters) and a correlation analysis were conducted. Canal configurations were classified according to preexisting classification schemes. The number and location of accessory canals and apical foramina were registered and compared. Results Utilizing advanced imaging techniques and quantitative analyses, our study establishes that contralateral mandibular incisors exhibit a remarkable degree of symmetry in multiple morphological parameters, including length, canal width, and dentinal thicknesses. The apical third showed a high degree of inter-variability for the contralateral pairs. The rigorous statistical analysis of the normalized parameters by Z-score showed no statistically significant differences between the contralateral mandibular incisors. Comparisons between central and lateral teeth revealed differences in root length but no significant disparity in the distribution of accessory canals. Central teeth, on average, were longer, while accessory canals were distributed relatively evenly between central and lateral teeth. Conclusions The findings of this study further establish the significant similarities between contralateral mandibular incisors, reinforcing their suitability as a reliable substrate for root canal comparison studies. Clinical relevance The absence of statistically significant differences between contralateral pairs in normalized parameters underscores their potential as a reliable reference point for root canal comparison studies in clinical dentistry. Furthermore, our findings emphasize the importance of individualized treatment planning, considering the natural symmetry in mandibular incisors to enhance clinical decision-making. This research contributes valuable insights to the field of endodontics, offering a standardized approach to sample selection and enriching the understanding of dental anatomy.

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Classifying the internal anatomy of anterior teeth in the Yemeni population using two systems: a retrospective CBCT study

Alhumaidi,

Mirza,

Karobari

et al. 2024

Odontology

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A study of the symmetry of roots and root canal morphology in mandibular anterior teeth using cone-beam computed tomographic imaging in a Polish population

Cited by 18 publications

References 30 publications

Root Canal Morphology of the Permanent Mandibular Incisors by Cone Beam Computed Tomography: A Systematic Review

Root Canal Morphology of the Permanent Mandibular Incisors by Cone Beam Computed Tomography: A Systematic Review

Morphometric micro-CT study of contralateral mandibular incisors

Classifying the internal anatomy of anterior teeth in the Yemeni population using two systems: a retrospective CBCT study

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