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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN:
Vol. 13, No. 2, 2014, pp. 93-97
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Bioline Code: os14018
Full paper language: English
Document type: Research Article
Document available free of charge
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Brazilian Journal of Oral Sciences, Vol. 13, No. 2, 2014, pp. 93-97
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Changes in pharyngeal airway space and soft tissue after maxillary advancement and bimaxillary surgery
Freire, Erika Franco; Filho, Francisco Wagner Vasconcelos Freire; Valdrighi, Heloisa Cristina; Degan, Viviane Veroni & Vedovello, Silvia Amélia Scudeler
Abstract
Aim: To evaluate changes in pharyngeal airway space (nasopharynx and oropharynx), soft
palate and lingual vallecula after maxillary advancement surgery and maxillary advancement and
mandibular setback surgery (bimaxillary surgery). Methods: Twenty Class III adult patients
were included in the study. Ten patients were treated with maxillary advancement and ten with
bimaxillary surgery (maxillary advancement and mandibular setback). Cephalometric landmark
measurements were recorded at 3 different time intervals: pre-surgical, post-surgical and six
months after surgery. Data collected were subjected to one-way ANOVA (p<0.05). Results:
Nasopharyngeal airway space increased after maxillary advancement and decreased after
bimaxillary surgery. There was increase in oropharyngeal dimensions in the region around the
uvula and loss of space for lingual vallecula, while in Group 2 there was diminished space for both
uvula and vallecula. The uvula and vallecula were moved forward in Group 1, whereas these
structures were moved in the posterior direction in Group 2. Conclusions: After maxillary
advancement surgery there was an increased in space in the nasopharyngeal region. The
oropharyngeal region related to the uvula presented an increase in space, whereas there was a
reduction in relation to the lingual vallecula. The uvula and lingual vallecula were moved forward.
Bimaxillary surgery promoted a reduction in the nasopharyngeal and oropharyngeal regions as
regards both the uvula and lingual vallecula. The uvula and lingual vallecula were moved in the
posterior direction.
Keywords
orthognathic surgery; pharynx; palate; soft
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