Accuracy of Cone Beam Computed Tomography Grayscale Density in Determining Bone Architecture in the Posterior Mandible: An In Vivo Study with Microcomputed Tomography Validation
| Autor: | Alberto Monje, Yiqun Wu, Wei Huang, Rachel A. Sheridan, Jesús Montanero-Fernández, Feng Wang, Hom-Lay Wang |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Molar Cone beam computed tomography Bone density business.industry medicine.medical_treatment General Medicine Grayscale 03 medical and health sciences 030104 developmental biology Medical imaging medicine Oral Surgery Dental implant business Nuclear medicine Dental alveolus Rank correlation |
| Zdroj: | The International journal of oralmaxillofacial implants. 32(5) |
| ISSN: | 1942-4434 |
| Popis: | Purpose: The aim of this study was to analyze the reliability of cone beam computed tomography (CBCT) in assessing the grayscale density (GSD) of bone by comparing it with microcomputed tomography (μ-CT) data. Materials and Methods: A total of 50 subjects with lost mandibular molars were included in the study. To assess the bone GSD, a previously fabricated template made of acrylic resin with a 2-mm-diameter metal rod was positioned, and CBCT was performed. The bone biopsies for μ-CT analysis were then obtained during implant surgery. The relationship between GSD assessed by CBCT and data from μ-CT analysis was studied using Spearman's rank correlation. Results: A total of 38 biopsies were available for μ-CT analysis. Positive correlations were identified between GSD and bone volumetric fraction (BV/TV) (r = 0.835, P < .001), bone volume (BV) (r = 0.353, P = .030), trabecular spacing (Tb.Sp) (r = -0.535, P = .001), and mean total volume (TV) (r = 0.470, P = .003). There was a clear positive linear correlation between normal values of GSD (< 700) and BV (r = 0.545). Conclusion: This study demonstrated the correlation between GSD assessed by CBCT and bone density assessed by μ-CT in the posterior mandible. For areas of typical bone density, there seems to be a positive linear correlation between GSD assessed by CBCT and bone density assessed by μ-CT. |
| Databáze: | OpenAIRE |
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