TMD and Occlusion Class Questions

Class made questions for exam 1

During the third stage of deglutition. The food passes through the esophagus in peristaltic waves and the larynx moves up.

■ A- First sentence is true and the second sentence is false.

■ B- First sentence is false and the second sentence is true.

■ C- Both sentences are true

■ D- Both sentences are false

■ A- First sentence is true and the second sentence is false.

Which phase of swallowing is voluntary?

■ A) Pharyngeal Phase

■ B) Esophageal Phase

■ C) Oral Phase

■ D) Laryngeal Phase

■ C) Oral Phase

Which of the following correctly lists the three primary functions of the masticatory

system?

■ A. Mastication, respiration, and phonation

■ B. Chewing, digestion, and breathing

■ C. Swallowing, taste perception, and articulation

■ D. Mastication, swallowing, and speech

■ E. None of the above

■ D. Mastication, swallowing, and speech

Which phase of swallowing is initiated by stimulation of the tactile receptors?

■ A) Oral phase

■ B) Pharyngeal phase

■ C) Esophageal phase

■ D) Preparatory phase

■ B) Pharyngeal phase

What is the primary response of the myostatic (stretch) reflex in the jaw?

■ A. Contraction of the masseter

■ B. Opening of the jaw

■ C. Activation of the temporalis

■ D. Relaxation of the digastric muscles

■ A. Contraction of the masseter

Which phase of swallowing is under voluntary control?

■ a) Oral phase

■ b) Pharyngeal phase

■ c) Esophageal phase

■ d) All of the above

■ a) Oral phase

During the pharyngeal phase of swallowing, which structures work together to

prevent food from entering inappropriate pathways?

■ a) Only the tongue

■ b) The tongue, soft palate, vocal cords, and epiglottis.

■ c) tongue, teeth, vocal cords.

■ d) Only soft palate

■ b) The tongue, soft palate, vocal cords, and epiglottis.

During protrusive movement, which of the following muscles do not help to pull the

condyles and discs forward?

■ A. Inferior Lateral Pterygoid Muscle

■ B. Temporalis

■ C. Superficial Masseter

■ D. Medial Pterygoid Muscle

■ B. Temporalis

A fully dentated 30 year old female comes into your office for a routine dental exam. Despite the patient reporting a main diet of sweet breads, she presents with significant flattening of the occlusal surfaces in addition to generalized wear facets. The patient suspects that she may grind her teeth in her sleep. During the mandible movement examination, what type of chewing stroke do you expect the patient to present with?

■ A.  No chewing stroke

■ B.  A vertical chewing stroke

■  C. A broader chewing stroke

■ D.  An irregular, less repeatable chewing stroke

■  E. A square chewing stroke due to her reduced opening capacity

■  C. A broader chewing stroke

Which factor primarily limits the superior contact border movement?
 A. Ligaments

B. TMJ morphology

C. Tooth contacts

D. Muscle fatigue

C. Tooth contacts

Why is it important for the cusp angle of teeth to be in harmony with the condylar angle?

■ A. To prevent premature tooth contacts that hinder smooth mandibular movements on protrusion

■ B. To increase the efficiency of the pharyngeal phase of swallowing

■ C. To increase saliva production

■ D. To strengthen the temporomandibular joint capsule

■ A. To prevent premature tooth contacts that hinder smooth mandibular movements on protrusion

During protrusion mandibular movement, all the masticatory muscles are active

EXCEPT:

■  A. Inferior lateral pterygoid

■ B.  Masseter

■ C.  Medial lateral pterygoid

■ D.  Temporalis

■ D.  Temporalis

What stage is the first stage of deglutination?

■ A. Voluntary Pharyngeal Phase

■ B. Involuntary Oral Second Site of Digestion

■ C. Voluntary Oral First Phase of Digestion

■ D. Involuntary Esophageal Phase

■ C. Voluntary Oral First Phase of Digestion

Which of the following accurately distinguishes the transition from the oral phase to the pharyngeal phase of swallowing?

■ A. Activation of peristaltic waves in the esophagus

■ B. Elevation of the larynx and closure of the vocal cords

■ C. Reflex contraction initiated by the tongue pressing the bolus against the hard

palate

■ D. Bolus contacting tactile receptors in the oropharynx, triggering involuntary

reflexes

■ D. Bolus contacting tactile receptors in the oropharynx, triggering involuntary reflexes

During a left lateral movement of the mandible, which of the following directions does the orbiting condyle not move?

■ A. Forward

■ B. Laterally

■ C. Downward

■ D. Medially

■ E. Both B and D

■ B. Laterally

Which of the following phases of swallowing is involuntary

■ A. oral phase

■ B. Pharyngeal phase

■ C. Esophageal phase

■ D. B and C

■ D. B and C

What is the curve of spee?

■ A. A curve connecting buccal and lingual tips of posterior teeth

■ B. A curve from the cusp tip of the mandibular canine following the buccal cusp

tips of premolars and molars in lateral view

■ C. A curve that is always convex in both arches

■ D. A curve that determines the width of the dental arch

■ B. A curve from the cusp tip of the mandibular canine following the buccal cusp

tips of premolars and molars in lateral view

The following statements are true about the tongue Aid during mastication except:

■ A. sweeps the teeth to remove any food residue.

■ B. taste

■ C. maneuvering food within the oral cavity to push out the mouth.

■ D. reposition the partially crushed food onto the teeth for further breakdown.

■ C. maneuvering food within the oral cavity to push out the mouth.

When you open your mouth to the point where the condyle surpasses the articular

eminence. What happens to the condyle after this occurs?

■ (A) The condyle rotates

■ (B) The condyle translates

■ (C) The condyle rotates and translates

■ (D) The condyle does not move

■ (D) The condyle does not move

All of the following occurs in pharyngeal phase except:

■ A. Tongue blocks the oral cavity

■ B. Stimulation of tactile receptors

■ C. Epiglottis covers the larynx to prevent food into trachea

■ D. Lips are sealed and teeth are brought into MIP

■ D. Lips are sealed and teeth are brought into MIP

Which receptor is responsible for the perception of movement, firm pressure?

■ A. Golgi Tendon

■ B. Pacinian Corpuscle

■ C. Muscle Spindle

■ D. Nociceptors

■ B. Pacinian Corpuscle