Comparitive Assessment of the Clinical Treatment Outcome and the Predicted Treatment Outcome of Clear Aligner Treatment; In Vivo Study

Objectives The objective of this clinical study was to assess the predicted treatment outcome and actual treatment outcome and compare the models of both the groups so as to evaluate the efficacy of tooth movement with clear aligner. Methods The sample size included ۱۰ cases with mild anterior crowding treated with aligner therapy. The predicted software models were superimposed on the Clinical STL models at various stages by using MeshLab software (Developed at the Visual Computing Lab at ISTI-CNR with the support of the ۳D-co-form project).The predicted software models showing orthodontic tooth movement was compared with the actual movement achieved clinically. Results The results of this study have shown that when a comparison was made on the basis of irregularity scores in both the groups, it was seen that the irregularity score was more in Clinical STL group at each stage such as ۲.۵۵ at T۴, ۱.۶۵ at T۶ and ۱.۰ at T۸ whereas ۲.۰ at T۴. ۰.۹۰ at T۶ and ۰.۲۵ at T۸ in the Software model group. Also, on comparing mean accuracy these three stages, the analysis of data showed the mean accuracy at T۴ is ۶۲.۵%, mean accuracy at T۶ is ۶۸.۸% and the mean accuracy at T۸ is ۷۸.۱%. Conclusions The predicted software models do not accurately reflect the patient’s tooth position .There is an overestimation by predicted software as compared to the actual achieved tooth position. There is a need of overcorrection to be built in the treatment planning stage itself and execution of the anticipated end result.

کلیدواژه ها:

Aligner ، comparison ، Clinical Outcome ، Predicted Outcome