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Comparative Study on J. Morita Accuitomo 170 Quality Settings on the Ability to Detect MB2 in Maxillary First and Second Molars

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[Technical Report, Master's Thesis]

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In endodontics better outcomes are associated with cleaning and shaping all the instrumentable root canal space. The prevalence of second mesial-buccal MB2 canals has been reported to be above 90 percent. In order to adequately treat the complex canal spaces, detection and identification is crucial. Digital imaging advancements including cone beam computed tomography CBCT have allowed greater identification of complex canal morphology. The aim of this study was to determine if the CBCT quality settings standard, high resolution mode, high fidelity mode, high speed mode on the J. Morita Accuitomo 170 would affect the ability to identify and locate MB2 canals. Fourteen extracted maxillary first and second molars were decoronated, mounted in putty and scanned using each of the quality settings. Measurements were obtained for x and y coordinates of the MB2 instrumentable space and compared to the gold standard of direct visualization under the operating microscope. An analysis of varianceANOVA was performed as well as mean difference. Significance was declared at P 0.05 for all statistical tests. The one-way ANOVA test did not detect significant differences in the x axis, y axis coordinates or in total. No differences were noted in the scanning modality for either coordinate accuracy or precision p 0.05. Considering there was no superior quality setting, the principle of as low as reasonably achievable should be practiced to obtain imaging that will allow location and complete debridement of all canal spaces with minimal radiation to the patient.

Subject Categories:

  • Anatomy and Physiology
  • Medicine and Medical Research
  • Optics

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[A, Approved For Public Release]