Three-dimensional evaluation of pharyngeal airway in individuals with varying growth patterns using cone beam computed tomography

Diwakar, Rohan; Sidhu, Maninder Singh; Prabhakar, Mona; Grover, Seema; Phogat, Ritu

doi:10.4103/0301-5742.162244

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…The malocclusion is evaluated as divergences on the x-y-z planes of space which are coronal, sagittal, and axial [45]. The legacy 2D lateral cephalographic x-ray, posterior-anterior cephalograms and panoramic radiographs opened their way to 3D imaging overcoming low resolution, imaging errors and superimposition of structures allowing calculation of the cross-sectional areas of the airway axial [46]. Parameters like that elevate the precision of treatment of patients with orthodontic malocclusions and assist specialists to perform with highest details in their treatment plan [47].…”

Section: Introductionmentioning

confidence: 99%

Change in the Constricted Airway in Patients after Clear Aligner Treatment: Retrospective Study

Fountoulaki¹,

Thurzo²

2022

Preprint

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This retrospective study evaluated changes in the pharyngeal portion of the upper airway in pa-tients with constricted and normal airway treated with clear aligners (Invisalign, Align). Additionally, the paper has assessed the change of tongue position in the oral cavity from lateral view. Evaluation was performed with specialized software (Invivo 6.0, Anatomage) on pre-treatment and posttreatment pairs of cone beam computed tomography imaging (CBCT) data. The level of airway constriction, volume, cross-section minimal area, and tongue profile were evaluated. Patients with malocclusion, with pair or initial and finishing CBCT and without sig-nificant weight change between the scans, treated with Invisalign clear aligners were distributed in two groups. Group A consisted of fifty-five patients with orthodontic malocclusion and con-stricted upper airway. Control group B consisted of thirty-one patients with orthodontic malocclusions without any airway constriction. In the group with airway constriction, there was a statistically significant increase in volume during therapy (p<0.001). The surface of the most con-stricted cross-section of airway did not change significantly after treatment in any of the groups. The airway constriction was most frequently localized at the level of 2nd cervical vertebra. The final tongue position was different from initial in 62.2% of all clear aligner treatments.

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Section: Introductionmentioning

confidence: 99%

Change in the Constricted Airway in Patients after Clear Aligner Treatment: Retrospective Study

Fountoulaki¹,

Thurzo²

2022

Preprint

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Effect of retraction of anterior teeth on pharyngeal airway and hyoid bone position in Class I bimaxillary dentoalveolar protrusion

Bhatia

Jayan

Chopra³

2016

Medical Journal Armed Forces India

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m e d i c a l j o u r n a l a r m e d f o r c e s i n d i a 7 2 ( 2 0 1 6 ) s 1 7 -s 2Background: To test the hypothesis that the retraction of anterior teeth has no effect on the dimensions of pharyngeal airway and to evaluate the retraction of anterior teeth on each parameter of pharyngeal airway. Methods: Twenty-two adult patients of Class I bimaxillary protrusion requiring first premolar extractions with maximum anchorage requirements were selected. The pharyngeal airway and dentofacial parameters of the patients were compared using pre-and posttreatment lateral cephalograms with the help of Student's paired t-test (P < 0.05). The relationship between airway size and dentofacial parameters was also evaluated using Pearson correlation coefficient. Results: The upper and lower lips were retracted by 2.25 and 5.4 mm after retraction of the incisors. The tips of upper and lower incisors were retracted by 7.75 and 7.15 mm, respectively. There was a statistically significant decrease in SPP-SPPW (P < 0.05), U-MPW (P < 0.001), TB-TPPW (P < 0.001), and change in HRGN (P < 0.01). A significant correlation was observed between the amount of retraction of lower incisor and decrease in the pharyngeal airway posterior to soft palate (r = 0.102), tongue (r = 0.322), and change in HRGN (r = 0.265). Conclusions: The size of the pharyngeal (velopharyngeal and glossopharyngeal) airway reduced and hyoid bone position changed after retraction of the incisors in extraction space in bimaxillary protrusive adult patients. #

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Three-dimensional evaluation of pharyngeal airway in individuals with varying growth patterns using cone beam computed tomography

Cited by 2 publications

References 12 publications

Change in the Constricted Airway in Patients after Clear Aligner Treatment: Retrospective Study

Change in the Constricted Airway in Patients after Clear Aligner Treatment: Retrospective Study

Effect of retraction of anterior teeth on pharyngeal airway and hyoid bone position in Class I bimaxillary dentoalveolar protrusion

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