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Year : 2015  |  Volume : 3  |  Issue : 1  |  Page : 30-37

Two-dimensional to three-dimensional: A new three-dimensional cone-beam computed tomography cephalometric analysis

Department of Orthodontics, A.M.E's Dental College, Hospital and Research Center, Raichur, Karnataka, India

Correspondence Address:
Raghu Devanna
Department of Orthodontics, A.M.E's Dental College, Hospital and Research Center, Bijengera Road, Raichur - 584 103, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2321-3825.146356

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Objectives of the Study: were (1) to develop a three-dimensional cephalometric analysis scheme applicable to assessing dentofacial deformities; and (2) to create a normative database of three-dimensional cephalometric measurements for adult North Karnataka population. Materials and Methods: A cross-sectional study was conducted on 40 male and 40 female adults with normal balanced facial profile and occlusion. Cone-beam computed tomography (CBCT) images obtained in digital imaging and communications in medicine format and the anatomic Cartesian three-dimensional cephalometric reference system according to Swennen et al. was used to standardize the reference planes. Cephalometric analysis was performed using various landmarks. New three-dimensional cephalometric analyses appropriate for orthognathic surgery as well as new parameters were used in this study. Results: The cephalometric norms generated in this study were comparable with those reported in the literature for conventional two-dimensional cephalometric analysis and unique features of North Karnataka population. The results showed significant differences between males and females in most of the facial measurements (P < 0.0001). Conclusion: This is the first database of three-dimensional cephalometric norms based on CBCT of the North Karnataka population. Norms generated were comparable with those reported in the literature with the conventional two-dimensional cephalometry: More accurate and reliable. Moreover, three-dimensional cephalometric analysis has the potential of incorporating new measurement methods that are difficult if not impossible in two-dimensional cepholmetric analysis. This method of cephalometric analyses can be useful in diagnosis and treatment planning for patients with dentofacial deformities.

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