Validity of palatal superimposition of 3-dimensional digital models in cases treated with rapid maxillary expansion and maxillary protraction headgear.
10.4041/kjod.2012.42.5.235
- Author:
Jin Il CHOI
1
;
Bong Kuen CHA
;
Paul Georg JOST-BRINKMANN
;
Dong Soon CHOI
;
In San JANG
Author Information
1. Department of Orthodontics, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea. korth@gwnu.ac.kr
- Publication Type:Original Article
- Keywords:
Digital model;
3D cephalometry;
Face mask;
Tooth movement
- MeSH:
Humans;
Incisor;
Molar;
Orthopedics;
Palatal Expansion Technique;
Palate;
Tooth Movement
- From:The Korean Journal of Orthodontics
2012;42(5):235-241
- CountryRepublic of Korea
- Language:English
-
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.
