Related Experiment Video
Updated: Sep 12, 2026
Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
Evaluation of Maxillary and Mandibular Transverse Dimensions on Digital Models and CBCT in Untreated Subjects With
Leandra Garcia Jorge1, Jedtanut Thussananutiyakul1, Chenshuang Li1
1Department of Orthodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania, USA.
Objectives:
To evaluate the transverse dimension in adults with normal occlusion using cone-beam computed tomography (CBCT) and digital models, and to establish norms for maxillo-mandibular differentials.
Material And Methods:
Twenty-four untreated adults with normal occlusion were selected. Inter-buccal and inter-lingual bone widths were measured on both the CBCT and digital models at the first molar. Measurements were taken 4 mm apical from the cementoenamel junction on CBCT and 4 mm apical to the free gingival margin on digital models. Maxillo-mandibular width differentials were calculated. The correlation between CBCT and digital model measurements was tested.
Results:
CBCT and digital models demonstrated strong correlations for all transverse measurements (r = 0.87-0.91). CBCT showed an average inter-lingual differential of 0.86 ± 3.80 mm and an inter-buccal differential of 1.09 ± 3.46 mm. Digital models showed -2.48 ± 2.79 mm and 0.89 ± 3.38 mm, respectively. Differential measurements between modalities were also strongly correlated for inter-lingual (r = 0.82) and inter-buccal (r = 0.84) differentials.
Conclusions:
CBCT- and digital model-derived transverse measurements in patients with normal occlusion were comparable and highly correlated; thus, they are suitable for diagnostic purposes.
