Craniomaxillofacial deformities/cosmetic surgeryEffect of Genioplasty on the Pharyngeal Airway Space Following Maxillomandibular Advancement Surgery
Section snippets
Materials and Methods
This retrospective study was approved by the research ethics committee of the Federal University of Goiás (Goiânia, Goiás, Brazil; protocol number 234371).
Results
In total, 104 LCRs were taken, corresponding to the T1 and T2 examinations of 52 patients who underwent MMA surgery with or without advancement genioplasty (Table 1).
The difference in the average measurement of craniocervical angulation at the T1 and T2 examinations was −0.7° ± 1.3° for the group that underwent genioplasty surgery and 0.13° ± 1.57° for the group that did not undergo genioplasty. These differences in angulation showed no statistically significant differences (P > .05).
Discussion
The present study compared MMA with and without genioplasty advancement by analyzing LCRs. Genioplasty was performed to esthetically improve the anteroposterior position of the chin in a sample of patients without OSAS. However, the genioplasty surgery was expected to improve the PAS results, because the inclusion of the genial tubercles was performed for all cases and myotomy of the genioglossus musculature was not performed. The hypothesis of this study, that genioplasty would affect the PAS,
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Comparison of airway changes after maxillomandibular advancement with or without genial tubercle advancement in obstructive sleep apnea using cone-beam computed tomography
2022, American Journal of Orthodontics and Dentofacial OrthopedicsCitation Excerpt :A single investigator (W.K) established landmarks and planes and then measured parameters of interest. The consistency of preoperative and postoperative head position was determined by the craniocervical inclination18,20,23; this is measured as the angle between the sella-nasion (SN) line and tangent line of the posterior border of the second cervical vertebra. The skull was reoriented to the Frankfort horizontal plane (FHP), and the midsagittal plane was placed through the incisive canal.
Three-dimensional morphologic evaluation of the changes in the pharyngeal airway and hyoid bone after bimaxillary surgery in patients with skeletal Class III malocclusion with facial asymmetry: A preliminary study
2022, American Journal of Orthodontics and Dentofacial OrthopedicsCitation Excerpt :In addition, in this study, because of the lack of sample size, the patients who go through genioplasty were not possibly excluded. Torres et al13 reported that genioplasty could affect the hypopharynx area. To discriminate these possible effects from genioplasty, menton and B-point movements were recorded separately.
The correlation of maxillomandibular advancement and airway volume change in obstructive sleep apnea using cone beam computed tomography
2021, International Journal of Oral and Maxillofacial SurgeryCitation Excerpt :Muto et al.25 reported that an increase in cranio-cervical inclination of 10° increased the PAS at the base of the tongue by 4 mm. This limitation was controlled to an extent in the present study by using a difference in cranio-cervical inclination of less than 5° to standardize the head position23,25. The second limitation is that the stability of the postoperative airway change may vary according to the timing of the postoperative imaging.
Follow-up observation of patients with obstructive sleep apnea treated by maxillomandibular advancement
2020, American Journal of Orthodontics and Dentofacial OrthopedicsOrthognathic surgery for obstructive sleep apnea
2019, Seminars in OrthodonticsPharyngeal airway space changes after maxillomandibular advancement: a five-year retrospective study
2019, International Journal of Oral and Maxillofacial Surgery
This study was financially supported by the National Council for Scientific and Technological Development (project 486771/2012).