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Comparative Evaluation of Identifying Mb2 Canals Using Loupes and Dental Operating Microscope - An In-Vitro Study
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| Author:
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ANISHA.A.MAHTANI , S.PRADEEP
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| Abstract:
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In the past few years, there has been immense research in maxillary first molars for the location of MB2 canals. The aim of this study is to investigate the presence of MB2 canals in maxillary first molars using plain eyesight, magnifying loupes, and operating microscope of various magnifications. 25 permanent and intact, freshly extracted human maxillary first molars were collected and stored in 10% formalin for the study. Molars were then embedded in a 5 cm ~ 5 cm cylinder of modeling wax. The access cavity was prepared with a triangular outline. Mesio buccal (MB), Distobuccal (DB), and palatal canal orifices were located with an endodontic explorer DG16. The pulp chamber floor was then negotiated to locate the MB2 canal in 5 stages. With the naked eye, MB2 canals were detected only in 44% of teeth. The Dental loupes (2.5X) with LED light efficiently detected 56% of teeth with MB2 canals. At 3.4X, MB2 canal was identified in 64% of teeth. The occurrence increased with increase in magnification such that at 8.5X, 72% and at 21X, 84% of teeth had presence of MB2 canal. MB2 canals were present in 84% of teeth, however in 16% of teeth, MB2 canals still remained unidentified. The presence of MB2 canal was confirmed with working length determination radiographs at each level of identification in respective groups. Pearson's Chi square test showed statistically significant associations between the use of the naked eye, Dental loupes (2.5X) + LED and Dental operating microscope (DOM) with p value <0.05 stating that some form of magnification is required to detect the MB2 canals. Higher magnifications aid in better detection of MB2 canals.
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| Keyword:
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Access cavity, Dental operating microscope, LED, Loupes, Maxillary molars, MB2 canals.
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2020.SP2.028
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| Download:
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