アブストラクト（28巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Computer-aided Diagnostic Setup System to Visualize Treatment Outcome of Dental Arches
Subtitle　： ORIGINAL ARTICLES
Authors　： Satoko Takahashi, Kenji Fushima, Eiji Hasegawa, Sadao Sato
Authors（kana）　：
Organization　： Department of Orthodontics, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 28
Number　： 1
Page　： 29-34
Year/Month　： 2000 / 3
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] For orthodontic diagnosis, a computer-aided diagnostic system to predict the outcome of dental arch treatment has been developed. Cast models of a patient were mounted on an articulator at the temporomandibular reference position and the estimated contact points on the mesial and the distal proximal surfaces of each tooth were digitized three-dimensionally. Standardized two-dimensional images of each tooth were utilized to visualize the present arch on a CRT as an image projected on the occlusal plane. The CRT image closely corresponded with the occlusal view of the original cast model and was found to be applicable to the clinical diagnosis of dental arches. To simulate the treatment outcome, an ellipse curve was deformed in dimension and orientation on the present arch image by trial and error with reference to the cephalometric diagnosis. The mesio-distal width of each tooth was calculated and the contact points of each tooth were aligned along the ellipse curve to give an image of the dental arch treatment outcome on CRT. The setup was performed in a case of non-extraction and a case of bilateral first premolar extraction, and the discrepancy between the available and required arch length was visualized on the CRT. Extraction treatment was planned in the patient and the setup data of the cast model was used as a reference to make up the visual treatment object in a cephalometric analysis. The present diagnostic setup system is considered to be an effective tool to facilitate and simplify the complex diagnostic process.
Practice　： Dentistry
Keywords　： Discrepancy, Dental arch, Diagnosis, Computer-aided, Simulation