Calibration and Validation of the Smart’n Ceph Digitizer Software v 10.0 Researcher for Apical Root Resorption Assessment
Apical root resorption resulted from ortho- dontic treatment is a common, despite undesir- able sequel of orthodontic treatment. Therefore, the accurate assessment and identification of factors that predispose this pathology is of clinical importance. However, conventional methods to assess the apical root resorption are time-consuming. The Smart'n Ceph Digitizer Software v 10.0 Researcher (Y&B Products, Chiang Mai, Thailand) was developed in coo- peration with the Department of Orthodontics, Chiang Mai University to allow the assessment of apical root resorption on periapical radio- graphs, thus facilitating measurements. The purpose of this study was to evaluate the accuracy of the Smart'n Ceph Digitizer Software v 10.0 Researcher for apical root resorption assessment. Twenty patients that presented with clearly clinical signs of apical root resorption resulted from orthodontic treatment were selected for this study. Crown and root lengths were measured on pre- and post-treatment periapical radiographs and corrected for image distortion. Manual and computer-assisted measurements were recorded on two occasions. Descriptive statistics were calculated for all measurement differences between the two sets of data from the manual and computer-assisted method. The significance of measurement differences were analyzed using a paired t test. Results showed no statistically significant differences between the manual and the computer-assisted method. This newly developed computer-assisted method shows potential applicability, not only in the clinic as an auxiliary tool for assisting orthodontic diagnosis and treatment planning but also to be used as a high- sensitive tool for clinical research on apical root resorption.
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