Upper Airway Post-planned Positioning of Maxillary Anterior Teeth: An Acoustic Pharyngometric Study
Pushkar Andhare, Sanjeev Datana, SS Agarwal, Sukhbir S Chopra, ID Roy
Acoustic pharyngometry, Intrusion and retraction, Upper airway
Citation Information :
Andhare P, Datana S, Agarwal S, Chopra SS, Roy I. Upper Airway Post-planned Positioning of Maxillary Anterior Teeth: An Acoustic Pharyngometric Study. Indian Sleep Med 2022; 17 (1):5-9.
Introduction: The effect of the retraction of anterior teeth on the upper airway as a response to orthodontic tooth movement is a less explored area in orthodontic literature, which requires deliberation in order to avoid undesired effects. The present study evaluates the change in upper airway dimensions post-intrusion and retraction of maxillary anterior teeth using Acoustic Pharyngometry, a noninvasive, chair-side diagnostic modality.
Materials and methods: The upper airway dimensions (mean area and volume) changes were assessed during pretreatment and 3 months post-intrusion and retraction of anterior teeth in a sample of 30 patients by using Eccovision(R) Acoustic Pharyngometer (Sleep Group Solutions, Florida, USA), a noninvasive diagnostic modality.
Result: A reduction in mean area (0.11 cm2) and volume (1.15 cc) of upper airway was observed following intrusion and retraction of maxillary anterior teeth, although the results obtained were not statistically significant (p >0.05).
Conclusion: As the results of this study suggest, there is reduction in mean area and volume of upper airway following intrusion and retraction of maxillary anteriors; it is essential to assess the pretreatment dimensions of upper airway. Nonionizing and noninvasive modalities like acoustic pharyngometry can be utilized as an efficient and convenient diagnostic modality to assess the upper airway in orthodontic clinics.
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