Prediction of Transverse Maxillary Dimension Using Orthodontic Models

Prediction of Transverse Maxillary Dimension Using Orthodontic Models

Author Oliveira, Melchiades Alves de Autor UNIFESP Google Scholar
Pereira, Max Domingues Autor UNIFESP Google Scholar
Hino, Claudia Toyama Autor UNIFESP Google Scholar
Campaner, Anelisa Bittencourt Autor UNIFESP Google Scholar
Scanavini, Marco Antonio Autor UNIFESP Google Scholar
Ferreira, Lydia Masako Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract The main objective of this study was to quantify the transverse maxillary dimensions using orthodontic cast models of individuals with natural normal occlusion. Sixty-eight pairs of orthodontic models were evaluated with the respective posteroanterior radiographies of white adults (38 women and 30 men; mean age, 1.7 years and 5 months). the models were placed in Class I molar occlusion, and on each pair, 4 points were marked on the alveolar buccal ridge (2 on the premolar region and 2 on the molar), determining the upper and lower transverse interpremolar and intermolar dimensions. the variables analyzed in the 3 measurements, obtained from the cephalometric radiographies and the cast models, showed no statistical differences. the upper intermolar distance was 57.20 +/- 2.60 mm; the lower intermolar, 55.16 +/- 2.40 mm; the upper interpremolar, 42.17 +/- 2.19 mm, and the lower interpremolar; 39.67 +/- 1.77 mm. On the posteroanterior cephalograms, the maxillary width was 65.97 +/- 3.42 mm and the mandibular width was 87.92 +/- 4.60 mm. There was intraresearcher and interresearcher correlation. There was no sexual dimorphism. the method proposed in this study can predict the transverse maxillary dimension, applying the formula (y) over cap (m) = 8.62 + 0.88x(m) ((y) over cap (m) = expected upper intermolar distance, x(m) = lower intermolar distance) for the molar region, and (y) over cap (m) = 4.87 + 0.94x(pm) ((y) over cap (pm) = expected upper interpremolar distance, x(pm) = lower interpremolar distance) for the premolar region.
Keywords Palatal expansion technique
Natural normal occlusion
Language English
Date 2008-11-01
Published in Journal of Craniofacial Surgery. Philadelphia: Lippincott Williams & Wilkins, v. 19, n. 6, p. 1465-1471, 2008.
ISSN 1049-2275 (Sherpa/Romeo, impact factor)
Publisher Lippincott Williams & Wilkins
Extent 1465-1471
Access rights Closed access
Type Article
Web of Science ID WOS:000261650200007

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