CMT CMT Sleep Disorders & Bruxism 2

Question 1

Which study is frequently cited as landmark evidence for myofunctional therapy's role in reducing OSA severity?

Accepted Answer

Guimarães et al. 2009

Answer

Smith et al. 2001

Answer

Proffit et al. 1995

Answer

McNamara et al. 2012

Question 2

What does polysomnography (PSG) measure and why is it relevant to myofunctional therapists?

Accepted Answer

It is the gold-standard sleep study measuring EEG, airflow, oxygen, and muscle activity to diagnose sleep disorders

Answer

It measures blood pressure and heart rate only

Answer

It measures jaw clenching force during sleep

Answer

It is a daytime test for airway resistance

Question 3

In children with enlarged tonsils and OSA, myofunctional therapy is typically recommended:

Accepted Answer

After adenotonsillectomy to address residual muscle dysfunction

Answer

Instead of adenotonsillectomy

Answer

Before any surgical intervention

Answer

Only if OSA is severe

Question 4

Which muscle group's weakness is MOST directly implicated in posterior airway collapse during sleep?

Accepted Answer

Genioglossus and pharyngeal dilator muscles

Answer

Masseter and temporalis

Answer

Orbicularis oris and mentalis

Answer

Buccinator and risorius

Question 5

What is 'positional OSA' and how does it differ from non-positional OSA in terms of myofunctional therapy candidacy?

Accepted Answer

Positional OSA is predominantly worse in supine sleep and may require primarily positional therapy, while non-positional benefits more from oropharyngeal exercise

Answer

Positional OSA occurs only during REM sleep; non-positional occurs in all sleep stages

Answer

Positional OSA is more severe and always requires CPAP

Answer

There is no clinical difference in myofunctional therapy candidacy

Question 6

A patient reports tooth wear, jaw pain, and waking with temporal headaches. The dentist has ruled out TMJ pathology. What myofunctional condition should the therapist prioritize assessing?

Accepted Answer

Sleep bruxism

Answer

Tongue thrust

Answer

Lip incompetence

Answer

Low tongue posture