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Comparison of computer-based treatment prediction with true results in bimaxillary protrusion cases  

Lee, Rhi-na (Dept. of Orthodontics, Graduate School of Clinical Dentistry, Korea University)
Lim, Yong-Kyu (Dept. of Orthodontics, Graduate School of Clinical Dentistry, Korea University)
Lee, Dong-Yul (Dept. of Orthodontics, Graduate School of Clinical Dentistry, Korea University)
Publication Information
The korean journal of orthodontics / v.32, no.3, 2002 , pp. 155-163 More about this Journal
Abstract
This study was performed to assess the accuracy of computer-based treatment prediction for soft tissue profile using Quick Ceph Image $Pro^{TM}\;&\;Quick\;Ceph\;2000^{TM}$ in bimaxillary protrusion cases. The Ore- and post-treatment lateral cephalograms of 21 female adults treated by low first premolar extraction were imaged and 9 landmarks and 27 specific soft tissue mesurements were digitized for comparing actual treatment results with computer simulations. The results of this study showed that Quick Ceph Image $Pro^{TM}\;&\;Quick\;Ceph\;2000^{TM}$ tends to overestimeate horizontal changes and underestimate vertical changes. In the computer simulation, upper lip showed rolling tendency. The upper lip measurements were disposed to be regular direction hut lower lip measurements were varied case by case even if it was statistically insignificant.
Keywords
Premolar extraction; Quick Ceph; Computer simulation; Soft tissue profile;
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