Effects of orthognathic surgery on oropharyngeal airway: a meta-analysis

Mattos, Cláudia Trindade; Vilani, Giselle Naback Lemes; Sant’Anna, Eduardo Franzotti; Ruellas, Antônio Carlos de Oliveira; Maia, Lucianne Cople

doi:10.1016/j.ijom.2011.06.020

Cited by 107 publications

(142 citation statements)

References 47 publications

(137 reference statements)

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“…Among its advantages is the evaluation of the regions in the coronal, axial, and sagittal planes; the visualization of soft and hard tissues; and the possibility of segmentation for volumetric analysis 8,[11][12][13] . However, image acquisition in both methods may be impaired due to the position of the head and tongue, breathing, and time necessary for the scanning procedure 8,18,19 .…”

Section: Discussionmentioning

confidence: 99%

Volumetric and cephalometric evaluation of the upper airway of class III patients submitted to maxillary advancement

Santiago

Moura

Gabrielli

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: A deficiência anteroposterior da maxila pode estar associada com a diminuição do volume da via aérea superior. O avanço de maxila por resultar em um aumento do espaço aéreo superior. Objetivo: Correlacionar mensurações cefalométricas (2D) e volumétricas (3D) da via aérea superior em pacientes classe III tratados por meio de avanço maxilar. Material e método: Este estudo retrospectivo transversal foi realizado em dez pacientes adultos submetidos ao avanço de maxila para correção de deficiência anteroposterior de maxila e deformidade classe III. Foram incluídos os dados de tomografias computadorizadas Cone beam em dois períodos: pré-operatório (T1) e pós-operatório de 6 a 8 meses (T2). Os arquivos DICOM foram importados e reconstruídos para avaliação volumétrica e cefalométrica da via aérea superior, dividida em nasofaringe, orofaringe e hipofaringe (Arnett & Gunson FAB Surgery). Resultado: A idade variou de 26 a 55 anos, com média de 36,3±9,2 anos. Não foram verificadas diferenças estatisticamente significantes para os parâmetros cefalométricos e volumétricos das três regiões da faringe entre os períodos T1 e T2. Este resultado ocorreu devido à pequena quantidade de avanço maxilar (4,7±1,89mm) necessário para a correção da deformidade na amostra. A correlação entre área e volume não foi estatisticamente significante apenas para as mensurações pré-operatórias da nasofaringe (r=0,30; p=0,40). Nas outras regiões e períodos a correlação foi estatisticamente significante (p<0,05). Conclusão: Avanços maxilares de pequenas dimensões não resultam em um aumento significativo das dimensões da via aérea superior.Descritores: Cirurgia ortognática; remodelação das vias aéreas; maxila. AbstractIntroduction: Anteroposterior maxillary deficiency can be associated with a decrease of upper airway volume. Maxillary advancement can improve the upper airway space. Aim: To correlate cephalometric (2D) and volumetric (3D) measurements of the upper airway in class III patients treated by maxillary advancement. Material and method: This retrospective transversal study was performed in ten adult patients submitted to maxillary advancement for correction of class III deformity secondary to maxillary anteroposterior deficiency. The Cone beam tomography files included in the medical records were used: (T1) pre-operative and (T2) 6 to 8 months postoperative. The DICOM files were imported and reconstructed for volumetric and cephalometric evaluation of the upper airway, as divided into nasopharynx, oropharynx and hypopharynx (Arnett & Gunson FAB Surgery). Result: Age ranged from 26 to 55 years with a mean of 36.3±9.2 years. There were no statistically significant differences for cephalometric and volumetric parameters of the three pharyngeal regions between T1 and T2 periods. This was due to the small amount of maxillary advancement necessary to correct the maxillary deformity in the studied patients (4.7±1.89mm). The correlation between area and volume was not statistically significant only for preoperative measurements of t...

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Section: Discussionmentioning

confidence: 99%

Volumetric and cephalometric evaluation of the upper airway of class III patients submitted to maxillary advancement

Santiago

Moura

Gabrielli

et al. 2016

Rev. odontol. UNESP

View full text Add to dashboard Cite

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“…Mattos et al [16] stated that there is a significant decrease in retropalatal dimension (mean 0.91 mm) and a highly significant decrease in retrolingual dimension (mean 2.83 mm) but no significant change in the minimal PAS. In contrast, our study found no significant changes in pharyngeal airway dimensions.…”

Section: Tablementioning

confidence: 99%

“…Chen et al [14] found that after mandibular setback surgery the PAS was narrowed at the levels of the oropharynx and hypopharynx by about 2.85 and 3.62 mm, respectively. Mattos et al [16] did a systemic review with meta-analysis and showed a significant decrease in oropharyngeal airway in retropalatal (mean 2.57 mm) and in retrolingual (mean 2.99 mm) dimension. Our findings agreed with these studies.…”

Section: Tablementioning

confidence: 99%

Prediction of pharyngeal airway changes in skeletal class III deformity patients after orthognathic surgery

Nguyen

Visuttiwattanakorn

Wongsirichat

2015

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathol

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“…In other studies with two dimensional analysis conducted on CT, anteroposterior distance and width of airway space at the level of tongue base was shown to decrease postoperatively 12,13 . Mattos et al 5 con ducted a meta analysis and reported that in mandibular laryngopharyngeal space. The oropharyngeal space showed significant decrease, whereas the laryngopharyngeal space did not.…”

Section: Young-wook Kwon Et Al: Three-dimensional Analysis Of Pharyngmentioning

confidence: 99%

Three-dimensional analysis of pharyngeal airway change of skeletal class III patients in cone beam computed tomography after bimaxillary surgery

Kwon

Lee

Kang

et al. 2012

J Korean Assoc Oral Maxillofac Surg

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(J Korean Assoc Oral Maxillofac Surg 2012;38:9-13) Introduction: To evaluate the 3-dimensional changes in the pharyngeal airway of skeletal class III patients after bimaxillary surgery. Materials and Methods: The study sample consisted of 18 Korean patients that had undergone maxillary setback or posterosuperior movement and mandibular bilateral sagittal split osteotomy setback surgery due to skeletal class III malocclusion (8 males, 10 females; mean age of 28.7). Cone beam computed tomography was taken 1 month before and 6 months after orthognathic surgery. Preoperative and postoperative volumes of the nasopharyngeal, oropharyngeal, and laryngopharyngeal airways and minimum axial areas of the oropharyngeal and laryngopharyngeal spaces were measured. Moreover, the pharyngeal airway volume of the patient group that had received genioplasty advancement was compared with the other group that had not. Results: The nasopharyngeal and laryngopharyngeal spaces did not show significant differences before or after surgery. However, the oropharyngeal space volume and total volume of pharyngeal airway decreased significantly (P<0.05). The minimum axial area of the oropharynx also decreased significantly. Conclusion:The results indicate that bimaxillary surgery decreased the volume and the minimum axial area of the oropharyngeal space. Advanced genioplasty did not seem to have a significant effect on the volumes of the oropharyngeal and laryngopharyngeal spaces.Key words: Orthognathic surgery, Angle class III malocclusion, Pharynx [paper submitted 2011Pharynx [paper submitted . 8. 24 / revised 2011Pharynx [paper submitted . 11. 1 / accepted 2012 The majority of previous studies on pharyngeal airway change of skeletal class III patients after bimaxillary surgery have been conducted mainly by means of twodimensional analysis using lateral cephalometric radiograph 1,614 . Few studies on threedimensional analysis using computed tomo grapy (CT) reported that the pharyngeal airway space had insignificant change or even had increased after mandibular setback surgery 24. Such disagreement was believed to have resulted from the difference in the corres ponding movement direction of the maxilla.The main purpose this retrospective study is to evaluate the changes of pharyngeal airway volume and minimal axial area in skeletal class III patients undergoing mandibular setback and maxillary setback or posterosuperior movement surgery, which is expected to decrease the pharyngeal airway space. Additionally, the effect of genioplasty advancement on pharyngeal airway was evaluated.

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Effects of orthognathic surgery on oropharyngeal airway: a meta-analysis

Cited by 107 publications

References 47 publications

Volumetric and cephalometric evaluation of the upper airway of class III patients submitted to maxillary advancement

Volumetric and cephalometric evaluation of the upper airway of class III patients submitted to maxillary advancement

Prediction of pharyngeal airway changes in skeletal class III deformity patients after orthognathic surgery

Three-dimensional analysis of pharyngeal airway change of skeletal class III patients in cone beam computed tomography after bimaxillary surgery

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