Which of the following statements about the mandibular postural position is incorrect: ()
A. It is the resting position of the mandible.
B. It is stable and repeatable.
C. It is the position of the mandible when a person sits or stands upright and looks forward, without chewing, swallowing, speaking, nor contact between the upper and lower teeth.
D. There is a 1-3 mm space between the upper and lower incisors.
E. There is no potential activity of the maxillary elevating muscles at this position.
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The physiological significance of protrusive occlusal position includes: ()
A. It’s good for protecting the posterior teeth.
B. It’s good for cutting food.
C. It is beneficial to the protection of the TMJ.
D. It is beneficial to the occlusal stability.
The forms of mandibular movements include: ()
A. marginal movement
B. habitual opening and closing movement
C. functional movement
D. masticatory movement
Which of the following oral functions depends on mandibular movements: ()
A. Chewing
B. Swallowing
C. Speech
D. Feeling
E. Sucking
Which of the following occlusal frames best simulates the mandibular movement: ()
A. non adjustable articulator
B. reverse articulator
C. average type articulator
D. semiadjustable articulator
E. fully adjustable articulator
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