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The Correlation between Mandible Trabecular Texture Parameter on Panoramic Radiograph with Bone Mass Density

Osteoporosis is a common metabolic disease characterized by low bone mass density. It affects both trabecular and cortical bone. Bone density is an important determinant which plays a vital role in the success of dental implant and denture treatment. A study to determine correlation between mandible trabecullar bone texture parameter with bone mass density value has been done. Samples of this study were panoramic radiographs and bone mass density values collected from 70 post-menopausal women. A digital panoramic radiograph and scanning using Dual X-ray Absorbtiometry (DEXA) for each site of right femoral neck and lumbar spine were taken from subjects. The aim of this study is to determine the correlation between texture parameter values of mandible trabecullar bone with bone mass density values. Texture parameter extraction on region of interest (ROI) of panoramic radiographs has been done using run length method, i.e. short run emphasis (SRE) and long run emphasis (LRE). SRE and LRE was correlated with each subject’s bone mass density (BMD) and T score. Spearman correlation test show significant negative correlation between SRE of right posterior ROI with lumbar spine T-score (p<0,05; -0,280<r<-0,257) and significant positive correlation between LRE of anterior ROI with femoral neck BMD (p<0,05; 0,106<r<0,114). Pearson correlation test show significant negative correlation between LRE of left posterior ROI with femoral neck BMD (r<0,05; -0,276<r<-0,249). Most of trabecular texture parameters in this study show no significant correlation with bone mass density value, therefore several trabecular feature extraction methods need to be developed in order to get best fit mandible density predictor using digital panoramic radiograph.