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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Adult, Cephalometry, Dental Articulators, Dental Models, Facial Asymmetry, Female, Humans, Jaw Abnormalities, Male, Malocclusion, Patient Care Planning, Prognathism, Reproducibility of Results, Tomography, X-Ray Computed.
user
Does accuracy of integration of dental cast in three-dimensional models? Context: This study investigated errors occurring in three-dimensional (3D) models when plaster dental casts are integrated into them. Three-dimensional milling models of three patients with a jaw deformity were fabricated using the Endoplan system (SPARC International Inc, Santa Clara, CA). After this, plaster dental casts were integrated into the 3D models using a face-bow transfer system. Two cephalograms were then compared, one obtained from the patient and the other obtained from the 3D model painted with contrast medium. In two cases, the reproducibility of the dental position as determined by angle analysis was within 2 degrees, and that determined by distance analysis was within 2 mm. However, errors over 4 degrees and 4.2 mm, respectively, were observed in one case.
assistant
It is clinically important to confirm the accuracy of the 3D model by cephalometric analysis, and it may be necessary to reposition the dental model based on the results. Final Decision: yes