Cone-beam computed tomography evaluation of short- and long-term airway change and stability after orthognathic surgery in patients with Class III skeletal deformities: bimaxillary surgery and mandibular setback surgery

Park, S.-B.; Kim, Y.-I.; Son, Woo‐Sung; Hwang, Deok‐Sang; Cho, B.-H.

doi:10.1016/j.ijom.2011.09.008

Cited by 114 publications

(98 citation statements)

References 23 publications

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“…The airway and soft tissue measurements taken on CBCTs in both open and closed jaws are presented in Table I and Figures 4-7: [22][23][24] Sample size:…”

mentioning

confidence: 99%

Three-dimensional computed tomography analysis of airway volume changes between open and closed jaw positions

Glupker

Kula

Parks

et al. 2015

American Journal of Orthodontics and Dentofacial Orthopedics

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“…The airway and soft tissue measurements taken on CBCTs in both open and closed jaws are presented in Table I and Figures 4-7: [22][23][24] Sample size:…”

mentioning

confidence: 99%

Three-dimensional computed tomography analysis of airway volume changes between open and closed jaw positions

Glupker

Kula

Parks

et al. 2015

American Journal of Orthodontics and Dentofacial Orthopedics

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“…30 Nasopharynx area and PNS-R increase was significant at the short-term follow-up (T3-T1) and this increase is maintained although a slight decrease was observed at nasopharyngeal area T4-T3 stage. According to the CT study by Park et al, 22 a nonsignificant increase at the 5-month period and a nonsignificant decrease to presurgery values at 1.4 years postsurgery was observed in the nasopharynx. Greco et al 28 found a long-term increase in nasopharyngeal level after isolated maxillary advancement surgery, and similarly, Aydemir et al 9 and Jacobsone et al 21 found a significant increase in nasopharyngeal level in bimaxillary surgery patients after 1 year and 3 years postsurgery, respectively.…”

Section: Discussionmentioning

confidence: 89%

“…8,9 According to Park et al, 22 a significant decrease occurs at the oropharyngeal area and does not recover after surgery. This result can be due to the greater amount of set back in that study, as there is a correlation between the jaw movements and a change in airway measurements.…”

Section: Discussionmentioning

confidence: 98%

“…8,9,20 The long-term effects of bimaxillary operations on the pharyngeal airway have been evaluated in a few studies. 7,21,22 However, those studies differ in materials and methodologies and thus can be interpreted differently. The aim of our study was to assess the pharyngeal airway, hyoid bone, and cervical posture in the short and long term after bimaxillary surgery in Class III patients by comparing the hard tissue changes and results between time periods.…”

Section: Introductionmentioning

confidence: 99%

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Pharyngeal airway space, hyoid bone position, and head posture after bimaxillary orthognathic surgery in Class III patients:Long-term evaluation

Efendiyeva

Aydemir

Karasu

et al. 2014

The Angle Orthodontist

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Objective: (1) To determine the effect of bimaxillary orthognathic surgery on pharyngeal airway, hyoid bone, and craniocervical posture in Class III bimaxillary surgery patients. (2) To evaluate short-term and long-term results. (3) To compare short-and long-term values. Materials and Methods: Twenty-six Class III adult patients treated with bimaxillary surgery were included in the study. Cephalometric records were taken before treatment (T1), before surgery (T2), and 5 months (T3), 1.4 years (T4), 3 years (T5), and 5 years (T6) postsurgery. Results: No significant differences were identified in craniocervical angulation between time intervals. There was a significant superior movement of hyoid bone at postsurgery (T3; P , .05); however, adaptation occurred to the normal position in the long term. A nonsignificant decrease occurred at the oropharyngeal middle pharyngeal distance parameter; however, this was compensated with a significant increase between T5 and T6 (P , .001). A significant decrease was observed in the hypopharyngeal Go-P parameter between T3 and T1 (P , .01), but it recovered with a nonsignificant increase in the long term. A significant increase in nasopharyngeal area was observed between T3 and T1 (P , .05). The hypopharyngeal area significantly increased between T5 and T6, and PNS-R significantly increased between T3 and T1 (P , .05). Conclusion: The pharyngeal areas adversely affected after surgery recover at long-term followup; thus, adaptation occurs after bimaxillary surgery. (Angle Orthod. 2014;84:773-781.)

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“…Currently, in patients with Class-III deformities, only 10% of cases are treated by mandibular setback procedure alone; in 40% bimaxillary surgery is performed, and in 50% an isolated maxillary advancement is performed 11 . One factor that can explain this distribution is the impact of such procedures on the UA, as the mandibular setback promotes a decrease of airway space due to anteroposterior narrowing in the oropharynx and hypopharynx regions 12 and can result in an OSA 6,13,14 .…”

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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Cone-beam computed tomography evaluation of short- and long-term airway change and stability after orthognathic surgery in patients with Class III skeletal deformities: bimaxillary surgery and mandibular setback surgery

Cited by 114 publications

References 23 publications

Three-dimensional computed tomography analysis of airway volume changes between open and closed jaw positions

Three-dimensional computed tomography analysis of airway volume changes between open and closed jaw positions

Pharyngeal airway space, hyoid bone position, and head posture after bimaxillary orthognathic surgery in Class III patients:Long-term evaluation

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

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