Deck 10: Diseases Affecting the Temporomandibular Joint

Question 1

The temporomandibular joint exhibits ginglymoarthrodial, or ____________ movement.

A) rotational and translational
B) opening
C) closing
D) maximal interdigitation

Answer 1

rotational and translational

Question 2

Which of the following statements is characteristic of a patient with osteoarthritis?

A) It is characterized by pain that is worse in the morning.
B) It is characterized by pain that is worse in the evening.
C) It is an inflammatory, autoimmune disorder of the joints.
D) Approximately 50% to 75% of patients have involvement of the temporomandibular joint during the course of the disease.

Answer 2

It is characterized by pain that is worse in the evening.

Question 3

Synovial __________ is the most common benign neoplasm of the synovium.

A) osteoblastoma
B) chondroblastoma
C) osteoma
D) chondromatosis

Answer 3

chondromatosis

Question 4

The temporomandibular joint is the articulation between the condyle of the mandible and the:

A) zygomatic process of the temporal bone.
B) glenoid fossa of the temporal bone.
C) external acoustic meatus.
D) spine of the sphenoid bone.

Question 5

An open lock that the patient cannot reduce is called:

A) subluxation.
B) dislocation.
C) ankylosis.
D) myofascial pain.

Question 6

Of the various surgical techniques used to treat TMDs, ________________ involves surgical repositioning of the condyle.

A) arthrocentesis
B) arthroscopy
C) condylotomy
D) open joint surgery

Question 7

_________________________ ankylosis is the most common type seen in the temporomandibular joint.

A) Fibrotic intraarticular
B) Bony intraarticular
C) Fibrotic extraarticular
D) Bony extraarticular

Question 8

Which type of dental radiography is best for examining disk position, function, form, and the presence of joint effusions?

A) Panoramic imaging
B) Transcranial imaging
C) Computerized tomography (CT)
D) Magnetic resonance imaging (MRI)

Question 9

About __% of all TMJ ankylosis cases result from joint infection, usually after trauma.

A) 10
B) 30
C) 50
D) 70

Question 10

While up to __% of the adult population has at least one sign and/or symptom of a temporomandibular disorder, most studies suggest that clinically significant TMD-related jaw pain, dysfunction, or both affects about __% of the general population.

A) 90; 10
B) 75; 5
C) 50; 10
D) 25; 5

Question 11

Clicking and popping most commonly reflect:

A) parafunctional habits such as bruxing and clenching.
B) disk displacement with reduction.
C) malocclusion.
D) trismus.

Question 12

During opening of the jaw:

A) rotational movement precedes translation.
B) rotational movement follows translation.
C) there is only rotational movement; translation occurs only during closure.
D) there is only translational movement; rotation occurs only during closure.

Question 13

Which of the following statements is true of the articular disk in the temporomandibular joint?

A) It is attached to the anterior and posterior aspects of the condyle.
B) It is attached to the inferior belly of the medial pterygoid muscle.
C) The disk is highly vascular.
D) The disk is surrounded and protected by the fibrous connective tissue joint capsule.

Question 14

Which of the following choices represents an indirect form of trauma affecting the temporomandibular joint?

A) Clenching, bruxism
B) Whiplash injury
C) Psychosocial factors
D) Osteoarthritis

Question 15

Children are _______ prone to TMJ ankylosis than adults because of greater osteogenic potential and ________ development of the joint meniscus.

A) more; more
B) more; less
C) less; more
D) less; less

Question 16

Opening, or depressor function, of the mandible is accomplished primarily by the _____________ muscle.

A) medial pterygoid
B) lateral pterygoid
C) masseter
D) temporalis