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http://dx.doi.org/10.4041/kjod.2012.42.5.235

Validity of palatal superimposition of 3-dimensional digital models in cases treated with rapid maxillary expansion and maxillary protraction headgear  

Choi, Jin-Il (Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University)
Cha, Bong-Kuen (Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University)
Jost-Brinkmann, Paul-Georg (Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Center for Dental and Craniofacial Sciences, Charite-Universitatsmedizin)
Choi, Dong-Soon (Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University)
Jang, In-San (Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University)
Publication Information
The korean journal of orthodontics / v.42, no.5, 2012 , pp. 235-241 More about this Journal
Abstract
Objective: The purpose of this study was to evaluate the validity of the 3-dimensional (3D) superimposition method of digital models in patients who received treatment with rapid maxillary expansion (RME) and maxillary protraction headgear. Methods: The material consisted of pre- and post-treatment maxillary dental casts and lateral cephalograms of 30 patients, who underwent RME and maxillary protraction headgear treatment. Digital models were superimposed using the palate as a reference area. The movement of the maxillary central incisor and the first molar was measured on superimposed cephalograms and 3D digital models. To determine whether any difference existed between the 2 measuring techniques, intra-class correlation (ICC) and Bland-Altman plots were analyzed. Results: The measurements on the 3D digital models and cephalograms showed a very high correlation in the antero-posterior direction (ICC, 0.956 for central incisor and 0.941 for first molar) and a moderate correlation in the vertical direction (ICC, 0.748 for central incisor and 0.717 for first molar). Conclusions: The 3D model superimposition method using the palate as a reference area is as clinically reliable for assessing antero-posterior tooth movement as cephalometric superimposition, even in cases treated with orthopedic appliances, such as RME and maxillary protraction headgear.
Keywords
Digital model; 3D cephalometry; Face mask; Tooth movement;
Citations & Related Records
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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