DOI: 10.69601/meandrosmdj.1775601 ISSN: 2149-9063

Comparison of the Reliability of Linear Mandible Measurements on Cone Beam Computed Tomography Images Obtained from Dry Human Mandible Using Three Different Inclinations

Gülçin Kılcı, Selin Yeşiltepe, Begüm İncedemir Ündey, Hulki Başaloğlu
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Objective: The aim of this study is to compare the linear measurements made on the images obtained from three different inclinations using cone-beam computed tomography (CBCT) from the dry bone mandibles with the anatomical measurements made directly on the dry bone mandibles, to evaluate and discuss the compatibility between these measurements.Material and Methods: The study included 20 dry bone mandibles and a total of 60 CBCT images were obtained for each jaw with the mandibular base parallel to the floor (parallel position) as well as +45º (up position) and -45º angle (down position). Linear measurements were made on the images obtained from with different inclinations.Results: Statistically significant differences were found between the three positions in CBCT measurements of the distance between the laterals of the right and left condyles, the distance between the right and left coronoid processes, the distance between the left coronoid point and the left mental foramen, and the distances between the left coronoid point and the right mental foramen.Conclusion: The reliability of measurements made on CBCT images using prominent anatomical landmarks does not depend on the experience of the operator, the measurements made on CBCT tend to be slightly less predictive than the anatomical measurements, all the measurements obtained in the down position in the CBCT scan are higher than the measurements in the up and parallel positions. Especially, we can say that the inclined forward positions of the mandible may affect the vertical measurements made according to the mandible regions.

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