CMT Oral Habits & Parafunctional Behaviors 2

Question 1

Which parafunctional habit is most strongly associated with temporomandibular joint (TMJ) disorders and myofascial pain?

Accepted Answer

Bruxism (teeth grinding/clenching)

Answer

Bruxism generates excessive repetitive forces on the TMJ and masticatory muscles, making it the parafunctional habit most closely linked to TMJ disorders and myofascial pain.

Question 2

What is the primary orofacial development concern when pacifier use continues beyond age 2?

Accepted Answer

Malocclusion, particularly anterior open bite and posterior crossbite

Answer

Prolonged pacifier use beyond age 2 is primarily associated with anterior open bite and posterior crossbite due to continuous mechanical pressure on the developing dental arches.

Question 3

Habitual lower lip biting or sucking most commonly produces which dental finding?

Accepted Answer

Proclination of maxillary incisors and retroclination of mandibular incisors

Answer

Habitual lower lip sucking traps the lower lip behind the upper incisors, pushing upper teeth forward (proclination) and tipping lower teeth backward (retroclination).

Question 4

Which behavioral modification technique is most commonly recommended as first-line treatment for thumb sucking in cooperative children?

Accepted Answer

Positive reinforcement with reward charts

Answer

Positive reinforcement through reward charts and praise is the recommended first-line behavioral approach for habit elimination in cooperative children, supporting intrinsic motivation before more invasive methods.

Question 5

A palatal crib or 'hay rake' appliance is primarily designed to interrupt which oral parafunctional habit(s)?

Accepted Answer

Tongue thrusting and thumb/digit sucking

Answer

The palatal crib is a fixed or removable orthodontic appliance that physically blocks digit access and eliminates the suction reward while simultaneously interrupting forward tongue thrust.

(CMT) Certified Myofunctional Therapist Practice Test

(CMT) Certified Myofunctional Therapist Practice Test

CMT Oral Habits & Parafunctional Behaviors 2