Three-dimensional cephalometric imaging versus two-dimensional traditional analysis

Aim The aim of this study was to combine the data on low dose Cone Beam Computed Tomography (CBCT) with a cephalometric simplified protocol. Materials and methods We assesed 3D cephalometric measurement in 120 patients. Cephalometry is an essential clinical and research tool in orthodontics. Lateral cephalograms that are two-dimensional (2-D) are used to depict three-dimensional (3-D) structures. Consequently, cephalograms have inherent limitations as a result of distortion and differential magnification of the craniofacial complex. This may lead to errors of identification and reduced measurement accuracy. Results The advantages of CBCT over conventional CT include lower radiation dose, lower cost, potentially better access, high spatial resolution and imaging quality improvement. In contrast to those on radiographs, the angular and linear measurements detected on three-dimensionally become real, moreover the selection of fewer points and the automatic measurements made by the computer reduced human error, for a much more reliable and repeatable diagnosis. (p<0.01) Conclusion The value of a 3-D image model directly corresponds to the quality of the information, the accurate anatomic data derived, and its collection in a 3-D anatomic database. Various treatment plans may then be developed based on the practitioner’s philosophy and the patients desire and willingness to cooperate in treatment alternatives.