TY - JOUR ID - TI - Hard palate bone density and thickness determination using CT scan and their relationships with body compositions measured by bioelectrical impedance analysis for Iraqi adult sample AU - Zahraa M. Al- Fadily AU - Hadeel A. Al- Hashimi PY - 2015 VL - 27 IS - 2 SP - 163 EP - 172 JO - Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد SN - 18171869 23115270 AB - Background: This study was conducted to evaluate the hard palate bone density and thickness during 3rd and 4thdecades and their relationships with body mass index (BMI) and compositions, to allow more accurate mini-implantplacement.Materials and method: Computed tomographic (CT) images were obtained for 60 patients (30 males and 30females) with age range 20-39 years. The hard palate bone density and thickness were measured at 20 sites at theintersection of five anterioposterior and four mediolateral reference lines with 6 and 3 mm intervals from incisiveforamen and mid-palatal suture respectively. Diagnostic scale operates according to the bioelectric impedanceanalysis principle was used to measure body weight; percentages of body fat, water, and muscle; bone mass; andbasal and active metabolic rates.Results: No significant difference in overall bone density and thickness of hard palate during 3rd and 4th decades. Thegender should be considered in regard to bone thickness. Cortical bone density and thickness showed a tendencyto decrease posteriorly, while the cancellous bone density showed a tendency to increase posteriorly. In themediolateral areas, no specific patterns were observed. With increasing BMI, the cortical bone density wasincreased. The relationships of bone density and thickness with most scale measurements were not significant.Conclusion: Mini-implants for orthodontic anchorage can be effectively placed in most areas of hard palateregarding the bone density. While regarding bone thickness, care should be taken during the planning of theirplacement in hard palate. A new classification for bone thickness of hard palate has been developed

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