Symmetry of root anatomy and root canal morphology in maxillary premolars analyzed using cone-beam computed tomography

Li, Yi-Han; Bao, Shi-Jie; Yang, Xiangwen; Tian, Xiao-mei; Wei, Bin; Zheng, Yuan-li

doi:10.1016/j.archoralbio.2018.06.020

Cited by 41 publications

(37 citation statements)

References 33 publications

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“…Several studies have analyzed internal anatomy through CBCT imaging, and it has been observed that maxillary first premolars tend to present two roots, but according to geographical regions the frequency varies between 30.3 % on a Chinese subpopulation n (Li et al, 2018) to 80 % on a French (Monsarrat et al, 2016) and a Brazilian subpopulation (de Lima et al, 2019). There exist studies with similar results to those obtained in this research, like Abella et al, on a Spanish population and Vinothkumar et al, (2015) on an Indian population, who reported a frequency of two rooted first premolars of 51 % and Martins et al (2017) in Portugal, who reported a frequency of 49 %.…”

Section: Discussionmentioning

confidence: 99%

Root Anatomy and Canal Configuration of Maxillary Premolars: A Cone-beam Computed Tomography Study

et al. 2021

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Section: Discussionmentioning

confidence: 99%

Root Anatomy and Canal Configuration of Maxillary Premolars: A Cone-beam Computed Tomography Study

et al. 2021

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“…Contralateral maxillary premolars also show a tendency for symmetry in root morphology. [ 44 ] On the basis of the number of morphological variations inherently reported for this tooth, it would be prudent to incorporate sufficient modification of instrumentation process based on the morphology of tooth, which has to be looked into detail before the initiation of therapy. Also, the ethnicity should be factored during preoperative assessment.…”

Section: Discussionmentioning

confidence: 99%

Root form and morphology of human permanent maxillary first premolars of an Indo-Dravidian population based in southern India: An in vitro study

et al. 2020

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A BSTRACT Aim: The aim of this study was to analyze root form and morphology of human maxillary first permanent premolars of an Indo-Dravidian population from southern India. Materials and Methods: Eight hundred and twenty-two maxillary first permanent premolars were cleansed and stored appropriately. Morphology and root form analysed, segregated into Groups (Gps): Gp I, Gp II, and Gp III, and later divided into subgroups (SGs) based on specific criteria. Gp I was divided into two SGs: SG A (minimal or absence of grooving in the root) ( n = 252) and SG B (clear and defined longitudinal groove in the root) ( n = 104), and Gp II was divided into SG C (roots dividing in coronal one-third) ( n = 154), SG D (roots dividing in the middle one-third) ( n = 158), and SG E (roots dividing in the apical one third) ( n = 138). Gp III consisted of only one SG F (teeth with three roots) ( n = 16). The groups were analyzed separately, their external root form and morphology were recorded. Root form was analyzed, and results were tabulated. This study was compared with other studies and statistically analyzed. Results: Gp II was common with an incidence of 54.74%. Gp I was the next most common with an incidence of 43.3%. Gp III was the least common with an incidence of 1.94%. The number and distribution of roots was also computed. Six types of root form were identified (Type [Ty] A = 30.65%, Ty B = 12.65%, Ty C = 18.73%, Ty D = 19.22%, Ty E = 16.78%, and Ty F = 1.94%). Conclusion: Awareness and assessment of root form, number preoperatively with regard to specific populations before initiation will pave way for successful outcome of therapy.

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“…However, this study has some limitations. First, the limitation of our study was relative small sample size used in micro-CT analysis, especially considering the symmetry of root canal anatomy [33], so the research should be deepened by expanding the sample size to the entire Chinese population, including adolescent population in different areas of China in the future. Second, the studied teeth sample was mainly collected from young patients (15–25 y).…”

Section: Discussionmentioning

confidence: 99%

Root Canal Anatomy of Maxillary First Premolar by Microscopic Computed Tomography in a Chinese Adolescent Subpopulation

Liu

Gao

Ruan

et al. 2019

BioMed Research International

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Objectives To investigate the root morphology and root canal anatomy of maxillary first premolar using microscopic computed tomography (micro-CT). Methods 324 maxillary first premolars were collected and scanned. The root and canal diameter, canal wall thickness, root taper, and cross-sectional shapes were determined in the single root with 1 canal (SR1C), single root with 2 canals (SR2C), and 2 roots with 2 canals (2R2C) by micro-CT. Results The results showed that single-rooted maxillary premolars were more common than other types. The incidence of SR1C, SR2C, and 2R2C reached 25%, 26.39%, and 26.39%, respectively. Root and canal diameters and canal wall thickness were decreased from coronal third to apical foramen. The three parameters and canal taper showed increases from buccal and palatal (BP) to mesiodistal (MD) aspects. The root canal tapers were smallest of the middle third level. The findings showed the different variations in 2R2C teeth. The root canal cross-sectional morphology in maxillary first premolars is complicated, including round, oval, long oval, flat canal, and irregular canal shapes. The distribution varied in different aspects. Conclusion Root canal morphology showed a wide variation and complicated structure. The single-rooted teeth were more common in the Chinese adolescent population, and the majority of maxillary first premolars have two canals.

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Symmetry of root anatomy and root canal morphology in maxillary premolars analyzed using cone-beam computed tomography

Cited by 41 publications

References 33 publications

Root Anatomy and Canal Configuration of Maxillary Premolars: A Cone-beam Computed Tomography Study

Root Anatomy and Canal Configuration of Maxillary Premolars: A Cone-beam Computed Tomography Study

Root form and morphology of human permanent maxillary first premolars of an Indo-Dravidian population based in southern India: An in vitro study

Root Canal Anatomy of Maxillary First Premolar by Microscopic Computed Tomography in a Chinese Adolescent Subpopulation

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