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

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

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04874727

Acronym

OSA

Enrollment

Registered

2021-05-06

Start date

2019-07-01

Completion date

2020-12-31

Last updated

2021-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

OSA, Sleep Apnea

Keywords

tomography, CBCT, Cone-beam computerized tomography, obstructive sleep apnea, airway volume, anterior-posterior measurement

Brief summary

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.

Interventions

PROCEDUREMandible slacked and captured with Correct Plus™ Impression Material Superfast

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.

Study design

Observational model

CASE_ONLY

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

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

Design outcomes

Primary

Measure	Time frame	Description
3D volumetric airway measurement	through study completion, an average of 1 year	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.
2D Anterior-Posterior airway Measurement	through study completion, an average of 1 year	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.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026