Morphometric Analysis of Mandibular Trabecular Bone Using Cone Beam Computed Tomography: An In Vitro Study

作者：Naitoh Munetaka^*; Aimiya Hidetoshi; Hirukawa Akiko; Ariji Eiichiro

来源：International Journal of Oral & Maxillofacial Implants, 2010, 25(6): 1093-1098.

• cone beam computed tomography
• dental implant
• mandible
• morphometric analysis
• trabecular bone

Purpose Recently, cone beam computed tomography (CBCT) was developed and applied to presurgical imaging for dental implant treatment Because the values obtained from CBCT images are not absolute values, unlike the Hounsfield units obtained by medical CT, the relationship between the values of trabecular bone morphometry obtained in small volume CBCT images and CT values obtained from multi slice CT was evaluated in an in vitro study Materials and Methods Small volume CBCT and multislice CT were performed in the posterior mandible Subsequently, morphometric analysis of the trabecular bone in CBCT images was performed using three dimensional bone morphometry software, and the correlations between the trabecular bone volume per total tissue volume (BV/TV) obtained using CBCT images and CT values generated from multislice CT images were analyzed Results BV/TV ranged from 3 1% to 42 7%, with a mean of 20 4% (SD 11 4) when the setting was 0 5 for the threshold The correlations between BV/TV using the threshold values ranged from 0 3 to 0 7, and CT values showed a high level of correlation (range 0 83 to 0 93) Conclusions The trabecular BV/TV was closely correlated with CT values obtained using multislice CT images It was suggested that the trabecular BV/TV can be used to evaluate the density of mandibular cancellous bone in dental implant treatment INT J ORAL MAXILLOFAC IMPLANTS 2010 25 1093-1098

• 出版日期2010-12