Interaction Between Body Posture and Nocturnal Sleeping Disorders in Dysgnathic Patients

Study Overview
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Brief Summary
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The role of head posture has been demonstrated in patient with dentofacial deformities. However, the relationship between body posture and jaw disorders is unclear. Moreover, patients with obstructive sleep apnea have the same anatomical abnormalities than patients with dentofacial deformities. The aim of this study is to evaluate, firstly, nocturnal sleeping disorders among patients with jaw disorders. Secondly, the investigators aim to evaluate the interaction between body posture, breathing and dentofacial deformities. A polygraphy will be performed on patient with dentofacial deformities before and after correcting jaw surgery. A postural evaluation will be done using EOS imaging system and a force plate

Official Title
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Nocturnal Respiratory Disorders Identification and Their Influence on the Body Posture and Breathing Synchronisation in Patients With Dentofacial Dysgnathia

Conditions
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Posture, Dentofacial Deformities, Sleep Disorder

Intervention / Treatment
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* Other: polysomnography


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patient in orthodontic preparation for a surgical treatment, age > 16 years Exclusion Criteria: postural disorder (scoliosis, history of spine surgery), pregnancy or breastfeeding, patients under guardianship

Ages Eligible for Study
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Minimum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Polysomnography alone<br>A polygraphy will be performed in 70 patient to search for obstructive sleep apnea | Other: polysomnography<br>* Patients will have a polygraphy, a postural evaluation including Vicon system, EOS imaging, ang a force platform<br>* Other names: Postural evaluation;|
| Experimental: Polysomnography and postural assesment<br>A polygraphy and a postural assesment will be performed in 30 patients | Other: polysomnography<br>* Patients will have a polygraphy, a postural evaluation including Vicon system, EOS imaging, ang a force platform<br>* Other names: Postural evaluation;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in 2D displacement range of the pressure center | Pressure center is recorded with force plates 1month before and 1 year after orthognathic surgery | Baseline, 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in EOS criteria description | Criteria: pelvic tilt, cervical lordosis, C7 sagittal vertical axis, T1 slope thoracic kyphosis, lumbar lordosis , pelvic incidence, sacral slope. 1month before and 1 year after orthognathic surgery | Baseline, 1 year | 
| Change Stabilometric criteria description | 2D displacement of the pressure center according to the anteroposterior axis, the lateral axis. 2D displacement speed. 1month before and 1 year after orthognathic surgery | Baseline, 1 year | 
| Change in Cephalometric analysis | Lateral cephalograms are recorded before and after surgery | Baseline, 1 year | 
| Change Polygraphy criteria description | Apnea-hypopnea index, oxygen saturation , before and after orthognathic surgery | Baseline, 1 year | 
| Change in Dentofacial deformities description | Clinical evaluation before and after surgery | Baseline, 1 year |