Three-dimensional evaluation of the pharyngeal airway using cone-beam computed tomography following bimaxillary orthognathic surgery in skeletal class III patients

Introduction: It has been suggested that mandibular setback surgery, combined or not with maxillary advancement as a treatment alternative for patients with mandibular prognathism, can induce changes in upper airway space (UAS). Therefore, this study aimed to assess the response of the upper airway in the oropharynx region of patients with Class III skeletal pattern that underwent bimaxillary orthognathic surgery (maxillary advancement and mandibular setback) combined with mentoplasty. Material and Methods: The sample comprised 26 cone-beam computed tomography (CBCT) scans of 13 patients. The examination was taken before and after surgery. UAS volume, sagittal area, length and minimal axial area with its width, depth and location, were measured with the aid of Dolphin ImagingTM software version 11.5 Premium. Data were statistically treated by applying Shapiro-Wilk test and Student's paired t-test, considering as statistically significant the results of which p-value was lower than 0.05. Results: No statistically significant differences were found in any measurements evaluated. Conclusions: No significant changes were observed in the oropharynx after bimaxillary orthognathic surgery and mentoplasty.

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Evaluation of the Pharyngeal Airway Space Before and after Bi-Lateral Sagittal Split Osteotomy Surgery using Three-Dimensional Cone Beam Computed Tomography

Global Journal of Medical Research ◽

10.34257/gjmrjvol20is1pg29 ◽

2020 ◽

pp. 29-37

Author(s):

Sameer Khan ◽

Devaki Vijayalakshmi ◽

K.S. Nagachandran ◽

S. Karthik ◽

Janani Jayapal ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Three Dimensional ◽

Cone Beam ◽

Skeletal Class ◽

Pharyngeal Airway ◽

Sagittal Split Osteotomy ◽

Skeletal Class Ii ◽

Dimensional Cone ◽

Before And After

Objectives: To evaluate the changes in the pharyngeal airway space (PAS) before and after bi-lateral sagittal split osteotomy (BSSO) surgery using a three-dimensional cone-beam computed tomography (3D-CBCT). Material and Methods: The sample consisted of patients (n=7), aged between 21-30 years, having a skeletal Class II with retrognathic mandible and orthognathic maxilla who underwent orthodontic treatment and were advised for BSSO advancement surgery. Pre-surgical CBCT scans were taken a week before the surgery (T0) and the post-treatment records, three months after the surgery (T1). The 3D PAS was reconstructed from the CBCT scans, and the volumetric changes were evaluated.

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Three-dimensional analysis of dental decompensation for skeletal Class III malocclusion on the basis of vertical skeletal patterns obtained using cone-beam computed tomography

The Korean Journal of Orthodontics ◽

10.4041/kjod.2012.42.5.227 ◽

2012 ◽

Vol 42 (5) ◽

pp. 227 ◽

Cited By ~ 7

Author(s):

Yong-Il Kim ◽

Youn-Kyung Choi ◽

Soo-Byung Park ◽

Woo-Sung Son ◽

Seong-Sik Kim

Keyword(s):

Computed Tomography ◽

Dimensional Analysis ◽

Cone Beam Computed Tomography ◽

Three Dimensional ◽

Cone Beam ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class

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Comparison of Volumetric Dimensions of Pharyngeal Airway for Different Dentofacial Skeletal Patterns Using Cone Beam Computed Tomography

Folia Medica ◽

10.3897/folmed.62.e48930 ◽

2020 ◽

Vol 62 (3) ◽

pp. 572-577

Author(s):

Madhura Jadhav ◽

Veera Bhosale ◽

Amol Patil ◽

Siddharth Shinde

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Facial Morphology ◽

Class Iii ◽

Skeletal Class ◽

Pharyngeal Airway ◽

Significant Difference ◽

Nasopharyngeal Airway ◽

The Relationship

Introduction: After a century of controversies, we are still not certain on the relationship between airway volume and facial morphology. Objective: To measure nasopharyngeal airway volume and compare it among different skeletal patterns. Materials and methods: Forty five CBCT scans of patients between sixteen to twenty five years were used in the study. The nasopharyngeal airway was divided into upper, middle and lower segments. CBCT images were grouped into skeletal class I, class II and class III. Results: There was highly significant difference in upper (p=0.001) and middle pharyngeal airway volume (p<0.001) among 3 skeletal groups. Lower pharyngeal airway volume was also statistically significant (p=0.051) among 3 groups. Total pharyngeal airway volume did not show any significant correlation. Conclusion: Nasopharyngeal airway volume seems to play a role in different skeletal patterns.

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