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. 2011 Apr;19(2):175-81.
doi: 10.1590/s1678-77572011000200015.

Facial and dental alterations according to the breathing pattern

Luciana Borges Retamoso  1 , Luégya Amorin Henriques Knop, Odilon Guariza Filho, Orlando Motohiro Tanaka
Affiliations

Facial and dental alterations according to the breathing pattern

Luciana Borges Retamoso et al. J Appl Oral Sci. 2011 Apr.

Abstract

There is controversy in the literature about possible interaction of the respiratory mode with the facial and dental structures.

Objectives: The aim of this study was to perform a longitudinal assessment of the changes in facial and dental structures in Angle's Class II, division 1 malocclusion individuals, divided according to the respiratory pattern (predominantly nasal or mouth), at two distinct moments of craniofacial development.

Material and methods: Pogonium and nose measurements were made on the lateral cephalometric tracings (LS'-Pog', LS'-B', B'-Pog', Pog'-PogTeg', Line NB, Pog-NB, N'-Prn, Prn-NPog, N-Prn-Sn, Prn-Sn-LS). Dental measurements were made on the plaster models (distances between the tips of the canine cusps and the tips of mesial cusps of the first molars) of 40 individuals aged 10 to 14 years (moment 1) and 13 to 16 years (moment 2), 23 being nose breathers (NB) and 17 being predominantly mouth breathers (MB).

Results: The Student's-t test and two-way ANOVA with repeated measures were applied to indicate differences between the mean values of these variables according to the moments and/or respiratory mode.

Conclusions: There were alterations in the facial measurements, without interference of the breathing pattern. However, the breathing pattern influenced dental alterations.

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Figures

Figure 1
Figure 1
Measurement of intercanine distance
Figure 2
Figure 2
Measurement of intermolar distance
Figure 3
Figure 3
Pogonium cephalometric tracing with linear measurements
Figure 4
Figure 4
Nose cephalometric tracing with linear and angular measurements
See this image and copyright information in PMC

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