Aim: To compare the ramus height between dentulous and edentulous groups using dental panoramic tomography. Materials and methods: Orthopantomographic images of 15 dentulous and 15 edentulous subjects, aged 20-60 years were compared and evaluated to measure the ramus height. Results: The results showed significant difference in ramus height between dentulous and edentulous mandibles (p=0.001). Conclusion: It can be concluded that mandibular basal bony morphology changes as a consequence of tooth loss, which could be expressed as shortening of ramus height measurement and ramus height could be the best parameter to predict edentulous and dentate status. Clinical significance: As seen in this study, the ramus height would be decreased due to teeth loss and this may affect the morphology of the face of edentulous patients, so fabricating of a new dental prosthesis of the loosing tooth or teeth immediately may limit ramus height decreasing after losing of teeth.
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