Low Body Mass Index as a Risk Factor for the Onset of Porosity of the Mandibular Bone in the Elderly

Objective:  To investigate whether a low body mass index (BMI) has significant relationship with mandibular bone porosity progression by conducting inferior cortex (MIC) classification in elderly Japanese people.  Material and Methods: A total of 266 study subjects, aged 70 at baseline, were recruited for this study, conducted from 1998 to 2007. The subjects divided into two groups according changes the MIC on serial panoramic radiographs during nine-year period: no change group (MIC-NC) (MIC-C). All MIC-C showed trending toward greater fragility. We evaluated BMI baseline. Logistic regression analysis was performed assess between condition period (0: MIC-NC, 1: MIC-C) (kg/m 2 ) adjusted gender, current health status (CHS), smoking habit (SH) baseline .  Results: mean standard deviations MIC-NC 22.8 ± 2.1 21.8 2.5 kg/m  for males 23.1   2.9 21.9   2.4 females. There both (p=0.04) females (p=0.01). logistic revealed association over (OR=0.84, p=0.003), which depending gender (OR=5.18, p=0.000), CHS (OR=0.53, p=0.015), SH (OR=4.15, p=0.002) Conclusion:  A carries risk developing measuring radiographs.