IADR Abstract Archives
Panoramic radiography measure for identifying asymptomatic osteoporosis in radiology clinic
Objectives: To clarify the usefulness of cortical shape of the mandible on panoramic radiographs for identifying asymptomatic individuals at risk of osteoporosis in general practice of our radiology clinic in Matsumoto Dental University Hospital.
Methods: Of the patients who visited our radiology clinic and had panoramic radiographs for the diagnosis of dental diseases such as dental caries between 2012 and 2015, panoramic radiographs of 4459 Japanese men and women (2112 men and 2347 women) aged 40 years and older were used in this study. Eight certificated oral and maxillofacial radiologists whose year of experience was between 6 and 37 years had classified cortical shape of the mandible into three categories (normal, mildly to moderately eroded, and severely eroded cortices) on panoramic radiographs independently during general practice of radiology clinic. Logistic regression analysis in forward selection, adjusted for gender, age, number of teeth present, hypertension (yes or no), diabetes mellitus (yes or no), was used to evaluate the association between cortical shape of the mandible and osteoporosis diagnosis.
Results: Of 4459 subjects, 244 (5.5%) had been diagnosed as osteoporosis by physician. Progression of cortical erosion of the mandible was significantly associated with gender (women) and advancing age (P<0.001). The odds ratio of having osteoporosis diagnosis for individuals with mildly to moderately and severely eroded cortices were 2.50 (95% confidence interval [CI], 1.65-3.78) and 3.83 (95% CI 2.37-6.17), respectively.
Conclusions: Our study suggested that mandibular cortical shape detected on panoramic radiographs was useful tool for identifying individuals at risk of osteoporosis in general practice of radiology clinic.
Methods: Of the patients who visited our radiology clinic and had panoramic radiographs for the diagnosis of dental diseases such as dental caries between 2012 and 2015, panoramic radiographs of 4459 Japanese men and women (2112 men and 2347 women) aged 40 years and older were used in this study. Eight certificated oral and maxillofacial radiologists whose year of experience was between 6 and 37 years had classified cortical shape of the mandible into three categories (normal, mildly to moderately eroded, and severely eroded cortices) on panoramic radiographs independently during general practice of radiology clinic. Logistic regression analysis in forward selection, adjusted for gender, age, number of teeth present, hypertension (yes or no), diabetes mellitus (yes or no), was used to evaluate the association between cortical shape of the mandible and osteoporosis diagnosis.
Results: Of 4459 subjects, 244 (5.5%) had been diagnosed as osteoporosis by physician. Progression of cortical erosion of the mandible was significantly associated with gender (women) and advancing age (P<0.001). The odds ratio of having osteoporosis diagnosis for individuals with mildly to moderately and severely eroded cortices were 2.50 (95% confidence interval [CI], 1.65-3.78) and 3.83 (95% CI 2.37-6.17), respectively.
Conclusions: Our study suggested that mandibular cortical shape detected on panoramic radiographs was useful tool for identifying individuals at risk of osteoporosis in general practice of radiology clinic.