The DO OAM study is a mono-center, interventional, prospective study carried out in CH VALENCE.

It will estimate the prevalence of dental movements in patients treated by oral Appliance for Sleep Apnea syndrome.

The investigators will used fingerprinting technique by taking multiple photographs of the teeth that allow for the three-dimensional reconstruction of the teeth

this study will provide a better understanding of dental movement caused by oral appliance

oral appliances are indicated for the treatment of Sleep Apnea syndrome. Dentoskeletal effects of oral Appliance are imperfectly assessed.

the investigators want to study dental movements by comparing three-dimensional reconstruction of the teeth and the dental articulation in patients treated for sleep apnea syndrome in our Hospital.

The study consists of an additional acquisition of three-dimensional reconstruction of teeth.

the data previously acquired during the first digital impression according usual practise will be compared to this additional acquisition.

Inclusion Criteria:

• Patient with a diagnosis of sleep apnea syndrome treated by Oral appliances in CH Valence
• Availability of previous digital impressions required for Oral appliances manufacturing
• Age ≥ 18 years old
• Read, write and understand the French language

Exclusion Criteria:

• Patient under guardianship, deprived of liberty, safeguard of justice
• Refusal to participate in research