Abstract
With the increasing expansion of miniscrew anchorage use in orthodontic treatment, more and more studies have been and will be carried out on the biochemistry, biomechanics and side effects of miniscrews in vivo. In such studies, a beagle has been the most commonly used animal model and its mandibular interradicular zones have been the greatest focus of interest. However, interradicular miniscrews risk failure by being loosened due to collision with adjacent roots. Therefore, it is necessary for the surgeon to be familiar with the anatomy of a beagle's mandible, especially that of the interradicular zones. This study has been performed to investigate the beagle's mandibular interradicular safe zones for miniscrew implantation to provide an anatomical guide for this type of study. Twenty-four beagle corpses were collected. Their mandible specimens were ground parallel to the respective buccal alveolar surface using a model trimmer until a horizontal plane was obtained, which was then sectioned on the line passing each tooth's central groove. In the image of this plane, cut at 2, 4, 6, 8 and 10 mm beneath the top of the alveolar crest, the mesiodistal width between the roots of P2 and P3, P3 and P4, P4 and M1 and the mesial and d...Continue Reading
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