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The aim of this study was to evaluate the sexual dimorphism of maxillary sinus dimensions using the CBCT imaging modality. Thirty CBCT scans of bilateral maxillary sinuses (60 maxillary sinuses) were retrospectively selected and the height, width, and depth of the sinuses were measured. All data were subjected to descriptive and discriminative functional analysis with generation of multiple logistic regression model and ROC analysis.The overall values of the parameters were significantly greater in the males as compared to the females with the right height (90.0%) and the left height (83.3%) being the best predictors. This study proposes the importance of sexual dimorphism of maxillary sinus dimensions particularly the sinus height, when other methods used in the field of forensics seem to be indecisive. It suggests the use of CBCT in forensics thus obviating the complete dependence on the usage of conventional CT. Ó 2015 Hosting by Elsevier B.V. on behalf of The International Association of Law and Forensic Sciences (IALFS).

Objectives:To retrospectively evaluate the subjective quality of images of cone beam computed tomography and compare with periapical radiographs (PR) to determine whether lamina dura (LD) and periodontal ligament (PDL) space can be detected and reported.Study Design:Sixty scans for anterior and posterior teeth with PR were included and scored on four point subjective scale. Scores assessed using Wilcoxon Signed rank test with the level of statistical significance P < 0.05.Results:Maximum number of ties for LD in anteriors was seen in coronal section (16) and in posteriors with sagittal section (17). Assessing PDL space in anteriors, high number of ties was seen with coronal section (25) and sagittal section (21), while for posteriors showed a high number of ties in all sections.Conclusions:LD could be observed and reported in coronal section for anteriors and in sagittal section for posteriors and PDL space in all the sections for both anteriors and posteriors.

Orthokeratinized odontogenic cyst (OOC) was first identified as the rare variant of keratocystic odontogenic tumor (KCOT) for its different histopathology and rare recurrence which was reclassified by WHO in 2005. The orthokeratinized odontogenic cyst is a distinct clinicopathologic entity and is histologically characterized by a thin, uniform, epithelial lining with orthokeratinization and a subjacent granular cell layer. The basal cells are usually cuboidal or flattened. OOC in maxilla is rare. This article presents a case of 56-years-old male patient with OOC in left maxilla. The clinical, radiographic and histological features of the cyst are discussed in this case report.

Aim: The aim of this study was to assess the accuracy of linear measurements on cone beam computed tomography (CBCT) images of human cadaveric mandibles and to establish its use in various diagnostics and dental treatment modalities. Materials and methods: A prospective cohort study was carried out using four dried human mandibles that were obtained from the Department of Anatomy Topiwala National Medical College (TNMC) on which 10 different linear distances between defined anatomical points were identified and instrumented with K files (number 08) and then imaged using Kodak 9000 3DVT X-ray machine-CBCT mode. Electronic linear measurements of bone height were measured using Kodak viewing software. Physical measurements were done with digital calibrated calipers at the same location. The measurements were performed three times by three experienced observers and the mean of the measurements was taken as dimensional truth. Results: Intraclass correlation obtained with respect to each mandible and for each method of evaluation (Vernier caliper and CBCT) by the three observers was found to be highly significant (p < 0.001) and amounted to 0.996 [95% confidence interval (CI)], making all the readings justifiable. On comparing measurements by CBCT with gold standard Vernier calipers, we found the p-value to be greater than that of 0.05, mean difference of Vernier Callipers (VC) and CBCT is-0.0283, indicating that the mean difference is not equal to zero, and thus the CBCT results are almost equal to VC. Conclusion: The present study reveals that we are now able not only to provide more accurate diagnosis with this imaging modality, but also to guide and assess various surgical and clinical interventions.