Please assess the completion status of the following clinical trial:

Trial Title: Comparison of Two Oral Myofunctional Reeducation Methods for Children With Obstructive Sleep Apnea

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria: participants must:~* present signs of obstructive sleep apnea: snoring, apnea / respiratory pauses audible by the entourage (objectivized by a score, to the hierarchical questionnaire of severity of Spruyt and Gozal, greater than or equal to 2,72- This questionnaire comprises six Questions and has a good sensitivity (60%) and specificity (82%) in screening for pediatric sleep apnea.~* be programmed for adenoidectomy, tonsillectomy or adeno-tonsillectomy within 3 months (or more).~Exclusion Criteria: participants should not:~* present with a craniofacial syndrome nor a severe medical condition with complex medical management,~* present with an abnormality of the neuromuscular tone (such as Duchenne myopathy or cerebral palsy)~* receive orthodontic therapy during the study~* have a class III malocclusion (mandibular prognathy type), for which a propulsion oral appliance is contraindicated because it may aggravate mandibular prominence. Maxillary deficiency is not a exclusion criterion.~* A non-nutritive oral habit such as digital sucking (or pacifier) that persists because it interferes with oral reeducation, and is a contraindication to orthodontic treatments. Children who have recently stopped such a habit may be included in the study.

- Gender: ALL
- Minimum Age: 5 Years
- Maximum Age: 14 Years
- Healthy Volunteers: f

Study Arms:
- Myofunctional Oral Exercices (Type: ACTIVE_COMPARATOR): Parents and participants of this group will receive instructions for nasal and oral myo-functional exercises, to perform at home each day, for 5 to 10 minutes. A booklet (measure of adherence) and an Phone application for Android/Apple with descriptions/videos of those exercices will be given to them. These exercises will include nasal hygiene procedures, nasal cartilage exercices, lingual posture rehabilitation exercises, lip tone enhancement exercises, and swallowing rehabilitation exercises.
- Soft Oral Appliance (Type: EXPERIMENTAL): Parents and participants will be instructed in wearing the soft/flexible oral appliance and how to perform nasal hygiene in order to better tolerate the device. The oral appliance comes in several sizes, adapted to the age of the child; it is constructed in a soft elastomer material, in a position of slight propulsion and opening of the mandible to help clear the pharynx. It has a ramp to guide the tongue in a good position, a labial screen to stretch the labial strap and prevent the tongue from protruding between front teeth.
- Control Group (Type: NO_INTERVENTION): Parents and Participants of this group will be reminded the nasal hygiene procedures (application of saline in each nostril three times a day), and given a diary to report daily use.

Based on this trial design, predict the completion outcome and termination type (if applicable).