Functional Rehabilitation Appliance: How Does It Work During the Child’s Sleep?

It Is During Sleep That the Functional Rehabilitation Appliance Plays Its Most Essential Role

Why Wear a Rehabilitation Appliance at Night?

During sleep:

• Muscle tone decreases

• The tongue and mandible lose their active stability

• Maladaptive habits (tongue interposition, mouth breathing, clenching, bruxism, etc.) easily reappear

The MyoSimple appliance acts as a passive guide, maintaining the structures in a physiological position and preventing dysfunctional habits — even without conscious control.

It is particularly useful during early orthodontic treatment, helping to rehabilitate breathing and swallowing patterns.

Why Is It Easy to Wear MyoSimple at Night?

MyoSimple is an innovative and patented rehabilitation appliance. Its design is completely different from traditional mouthguards, making it comfortable and easily accepted by children from the age of 3.

It is small, stable in the mouth, and does not disturb the tongue, cheeks, or gums.

After a few days, it’s often the child who asks for their MyoSimple before going to sleep!

Mechanisms of Action of MyoSimple During Sleep

a) Mandibular Guidance

The MyoSimple appliance positions the mandible in a balanced posture:

• neither too far forward,

• nor too far backward,

• nor in lateral deviation.

This reduces tension in the masticatory muscles and protects the temporomandibular joint (TMJ).

b) Tongue Positioning

Thanks to its patented design, MyoSimple:

• prevents the tongue from interposing between the arches,

• guides its tip toward the physiological palatal zone (retro-incisal papilla),

• promotes correct swallowing even during nocturnal rest.

Through proprioceptive feedback, the tongue gradually “learns” its correct resting position.

c) Respiratory Re-education

Its design prevents the mandible and tongue from collapsing backward.

The tongue ramp gently lifts and advances the tongue, helping to open the upper airways and reduce snoring.

Once nasal permeability has been checked by a healthcare professional, MyoSimple use promotes nasal breathing.

d) Muscular Relaxation and Protection

During the body’s natural relaxation phase at night:

• MyoSimple reduces clenching and bruxism forces

• It protects both the teeth and TMJs

• It limits microtraumas caused by reflex contractions

Cumulative Neuromuscular Effect

Functional rehabilitation works through repetition and proprioception: each night, the patient maintains a more balanced functional pattern.Gradually, the brain records this new motor model, and the mandibular–lingual postural reflex becomes more stable — even without the appliance.

Key Takeaway

The MyoSimple appliance acts as a “silent night coach.” It reinforces the conscious re-education performed during the day.

This 24-hour continuity — active rehabilitation by day and passive guidance by night — delivers the best functional and orthodontic results over the long term.