Aim
The aim of this study was to investigate the root and canal morphology of maxillary first and second molars in Southern West Coastal Indian population using cone beam computed tomography (CBCT).
Materials and methods
Cone beam computed tomography images of (n = 143) maxillary first molar and (n = 139) maxillary second molar were obtained from Southern West Coastal Indian population. The number of roots, root canals, and presence of second mesiobuccal (MB2) canal were determined.
Results
Two roots were seen only in 1.4% of first molars and 8.6% of second molars. Three- rooted were the most common and seen in 98.6% of first molars and 89.9% of second molars. Single root was seen in 1.4% of second molars. The incidence of MB2 canal in the first molar is 64.1% and in second molar 23%. C-shaped canals were found in 1.4% of the second molars
Conclusion
Southern West Coastal Indian population showed features that were similar to other regions of Indian Population. The CBCT is a wonder tool for the study of root canal morphology and a reliable source of information for retrospective studies.
How to cite this article
Mohan RP, Thomas MS, Shetty N, Ahmed J, Pallippurath G, Tallada A. Evaluation of the Root and Canal Morphology of Maxillary First and Second Molar using Cone Beam Computed Tomography: A Retrospective Study. World J Dent 2017;8(2):134-138.
Recently, various diagnostic tools have emerged with a view to enhance endodontic treatment. Cone-beam computed tomography (CBCT) is presented as a new endodontic tool. The narrow field CBCT reduces the negative effects of anatomic noise, geometric distortion, and technique sensitivity observed on two-dimensional images. It can be used to identify canal morphology, numbers of canals, and relative positioning even in the presence of calcific metamorphosis (CM) and dystrophic calcifications. Calcific metamorphosis is characterized by the deposition of hard tissue within the pulp canal space. Most of the literature advices the treatment of CM through observation and periodic examination. Thus, it is imperative for the clinician to identify calcified canals preoperatively for conservative treatment approach. This case series illustrates about the versatility of CBCT over the conventional radiology for detecting calcified canals.
How to cite this article
Chougule AR, Kundabala M, Mohan RP, Shetty N. Cone-beam Computed Tomography: A Resolution to Paradoxical Judgments in Endodontic Diagnosis. World J Dent 2016;7(2):100-106.
Aim:The aim was to assess the influence of two irrigation regimens having ethylenediaminetetraacetic acid (EDTA) and ethylenediaminetetraacetic acid with cetrimide (EDTAC) as final irrigants, respectively, on the dentine wettability for AH Plus sealer by comparing its contact angle formed to the irrigated dentine.Materials and Methods:Study samples were divided into two groups (n = 10). The groups were irrigated with 3% sodium hypochlorite (NaOCl) solution followed by either 17% EDTA or 17% EDTAC solution. AH Plus was mixed, and controlled volume droplet (0.1 mL) of the sealer was placed on the dried samples. The contact angle was measured using a Dynamic Contact Angle Analyzer and results were analyzed using SPSS 21.0 and 2 sample t-test.Results:There was a significant difference in the contact angle of AH Plus formed to the dentine irrigated with the above two regimens. AH Plus showed significantly lower contact angle with the regimen having EDTAC as a final irrigant than the one with EDTA (P < 0.05).Conclusion:An irrigation regimen consisting of NaOCl with either EDTA or EDTAC solution as a final irrigant influences the dentine wettability and contact angle of a sealer. EDTAC as a final irrigant facilitates better dentin wettability than EDTA for AH Plus to promote its better flow and adhesion.
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