Comparison of Standing Versus Supine 3D Cone Beam Computed Tomography in Patient With Obstructive Sleep Apnea

Study Overview
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Brief Summary
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The anatomical changes of the upper airway in a standing vs pseudo-supine position using Carestream Orthodontic Imaging (Volumetric) and Carestream Orthodontic Imaging module (AP measurements) of the patient's airway respectively, have been taken and the obtained results compared. In order to simulate the supine position, patients are placed in a supine position (180 degrees) in a dental exam chair, and asked to relax their lower jaw, allowing it to drop back, simulating their jaw falling back while sleeping. That bite is then captured with a Correct Plus™ Impression Material Superfast. Once the bite material hardens, it locks the bite in place. The patient then stands upright, and CBCT is taken standing while the jaw placement is still pseudo sleep-supine, supported by the bite material.

Official Title
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Reduction of Volumetric and AP Measurements of the Airway in Pseudo-sleep Supine Position vs Standard 3D Cone Beam Computed Tomography on Patients With Sleep Apnea

Conditions
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OSA, Sleep Apnea

Intervention / Treatment
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* Procedure: Mandible slacked and captured with Correct Plus™ Impression Material Superfast


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participant must be a patient of Dr. Maryam Bakhtiyari's orthodontic practice Participant must have a diagnosis of obstructive sleep apnea Participant must have an invitation to join research study from Dr. Bakhtiyari Exclusion Criteria: Participant cannot have a history of serious dental trauma
Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Study Population<br>The five or six individual patients enrolled are the members of the sole group, the study population. These individuals all have been diagnosed with obstructive sleep apnea and have take a Cone-beam CT scan with and without the new bite technique. | Procedure: Mandible slacked and captured with Correct Plus™ Impression Material Superfast<br>* In order to simulate the supine position, patients are placed in a supine position (180 degrees) in a dental exam chair, and asked to relax their lower jaw, allowing it to drop back, simulating their jaw falling back while sleeping. That bite is then captured with a Correct Plus™ Impression Material Superfast. Once the bite material hardens, it locks the bite in place. The patient then stands upright, and CBCT is taken standing while the jaw placement is still pseudo sleep-supine, supported by the bite material.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 3D volumetric airway measurement | Investigators will measure and compare the 3D volumetric airway of the x-ray both with and without the pseudo-supine technique. This will be done on the computer using Carestream Orthodontic Imaging. | through study completion, an average of 1 year | 
| 2D Anterior-Posterior airway Measurement | Investigators will measure and compare the 2D anterior-posterior airway of the x-ray both with and without the pseudo-supine technique. This will be done on the computer using the Carestream Orthodontic Imaging module. | through study completion, an average of 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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tomography, CBCT, Cone-beam computerized tomography, obstructive sleep apnea, airway volume, anterior-posterior measurement