Maryam Mohammadi
Saeed Alinejad
Farida Abesi

Background and aims: The current investigation aimed to evaluate jaw bone changes, and compare the presence of gonial cortex bone thickness, mental index (MI), lamina dura (LD), lower dental canal, and bone density in panoramic radiography, in patients with hyperparathyroidism. Methods: The present cross-sectional descriptive-analytical study was performed on ۱۷ healthy individuals and ۱۷ patients who suffered from resorptive hypercalciuria in the dialysis center of Shahid Beheshti hospital in Babol in ۲۰۱۸. If patients had two or more decayed teeth, they were referred to a specialized maxillofacial clinic by the dentist for free panoramic imaging. Mandibular cortical index, LD, bone change, mandibular resorption (MR), and general cortical indices underwent examination. Results: The mean age of the control and case groups was ۳۶.۵۸±۱۱.۸۱ years and ۴۰.۲۳±۱۴.۳۲ years, respectively (P=۰.۴۲۴). In addition, the mean MI was ۴.۲۷±۰.۸۷ and ۲.۹۸±۰.۷۵ in the control and case groups, respectively (P<۰.۰۰۱). Based on the results, the mean gonion region’s cortical bone thickness was ۰.۹۳±۰.۲۳ and ۱.۰۹±۰.۲۴ in the case and control groups, respectively (P<۰.۰۰۱). Further, bone changes (P=۰.۰۳۶) and MR (P=۰.۰۱۷) were significantly different in the case and control groups. However, LD vision showed no significant difference in the hyperparathyroidism and the control groups (P=۰.۱۴۱). Conclusion: The results demonstrated a decrease in the thickness of the cortical bone in the guinea pig, mental region, and lack of dental canal in resorptive hypercalciuria compared to healthy individuals.