PMID: 24352390Dec 20, 2013Paper

Effects of chin advancement surgery in hyoid bone and tongue positions and in the dimension of the oropharynx

Dental press journal of orthodontics
Milena Barreto de Arruda CabralRivail Almeida Brandão Filho

Abstract

Advancement genioplasty has been increasingly indicated for the correction of anterior mandibular deficiency as it balances the patient's profile and generates functional changes. Thus, the aim of this study was to assess the effects of advancement genioplasty in the oropharyngeal size and in the position of the hyoid bone and tongue. The sample comprised 22 lateral cephalometric radiographs of 11 individuals who had undergone advancement genioplasty alone. Eleven of these radiographs depicted the immediate preoperative period (T0) and the other 11 the postoperative period after at least four months (T1). The radiographs were scanned and exported to the Radiocef Studio 2.0® software (Radio Memory Ltda., Belo Horizonte, MG, Brazil). The landmarks were then identified and automatically measured by the program. The results showed statistically significant differences between the horizontal position of the hyoid bone and tongue and in the oropharyngeal size. The hyoid bone and tongue were repositioned anteriorly after surgery (p = 0.01), thereby increasing the dimension of the oropharyngeal airspace (p = 0.01). The oropharyngeal dimension increased as the tongue base and hyoid bone were repositioned more anteriorly.

References

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Citations

Aug 2, 2017·Progress in Orthodontics·Roselaine SprengerViviane Veroni Degan
Apr 3, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Paula Kirzner Nogueira PereiraCarolina Carmo de Menezes

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