Tmd Test Bank

Front 1

For a TMD patient, the initial choice of radiographs would be?

Back 1

Panoral

Front 2

Which of the following is FALSE regarding the statement; What dictates the position of centric relation at the joint level?
a) muscles
b) ligaments
c) soft tissue
d) bone
e) teeth

Back 2

Teeth is FALSE

Front 3

What portion of the Lateral Pterygoid attaches to the Articular Disc & Capsule of the TMJ?

Back 3

Superior Head of Lateral Pterygoid

(inferior head attaches to neck of condyle)
The Lateral Pterygoid Protrudes the Mandible,which Inhibits obtaining CR

Front 4

T/F
The Temporomandibular disc is held in place on the condyle by the discal ligaments and temporomandibular ligaments.

Back 4

False
It is held in place on the condyle by the Discal ligaments (aka medial & lateral collateral ligaments)

Front 5

All of the following are true of abfractures
a) V-shaped cervical notches
b) lateral interferences are present
c) hypersensitivity is possible
d) none of the above, these are related to bruxing

Back 5

These are all signs of abfraction

Front 6

Erosion can be differentiated from attrition by all of the following Except:
a) wear on contacting-occluding surfaces
b) Concavities on smooth surface enamel
c) raised restorations
d) pulp exposure in children
e) B & C

Back 6

???
i think it is wear on contacting-occluding surfaces

Front 7

Which of the following tissues are potential injury sites with a traditional mandibular alveolar nerve block?
1. Mucosa
2. Muscles of Mastication
3. Buccinator Muscle
4. Temporomandibular Ligament
5. TMJ capsular ligament
6. Medial Pterygoid Muscle

Back 7

1,3,6
1. Mucosa
3. Buccinator Muscle
(Connective Tissue)
(Adipose Tissue)
6. Medial Pterygoid Muscle
(Spenomandibular Ligament)

Front 8

Which of the following could be considered as a primary etiological cause of TMD?
a) Professional Boxing
b) Occlusion
c) Parafunction
d) 5 hour crown prep appt
e) More than one of the above

Back 8

More than one of the above
Boxing results in macro trauma
Occlusion is NOT a primary etiological factor in TMD
Microtrauma/Parafunction (bruxing, lip biting, nail biting, extensive dental procedures, leaving mouth props in for an extended period.

Front 9

T/F
By not adjusting your car's head rest properly you could be at risk for developing TMD if you were in a car accident; In most patients, occlusion has been identified as a primary etiological factor in the development of TMD

Back 9

First statement is T
Second statement is F

Front 10

Which of the following occlusal conditions have been identified as having strong associations w/TMD?
1. Lateral Interferences
2. Protrusive interferences
3. Non-working interferences
4. Angles Class 2 Div II
5. Anterior open bite
6. Angles Class 2 Div I w/6mm horizontal overlap occlusion
7. Left maxillary molar/premolar lingual cross-bite
8. Missing teeth 2,3,4,5,12,13,14,15

Back 10

4,5,6,7,8
Class 2 Div II highly associated with TMD
Class 2 div I w/extreme overbite
Left maxillary molar/premolar lingual cross-bite
Masticatory Efficiency >/= 5 missing posterior teeth may lead to TMJ symptoms
Reduced overbite (anterior open bite), has been associated w/condylar changes and with rheumatoid arthritis
(occlusal interferences only 14%)

Front 11

The articular disk is attached to the medial and lateral poles of the condyle head by?
a) Horizontal position of the lateral TMJ ligament
b) Articular capsule
c) Collateral ligaments
d) Superior belly of the lateral pterygoid muscle

Back 11

Collateral Ligaments

Front 12

When adjusting an anterior stop (the lab project you just completed), the contact area on the mandibular centrals should be:

Back 12

Over the incisal edge of the centrals

Front 13

The stabilization appliance is completed in 2 steps. What is the purpose of the 2nd step, the addition of posterior acrylic?

Back 13

I think that this is more than one of the above.
The notes say: "One of the primary goals of the stabilization appliance is to provide occlusal stability (prevent the teeth from moving) - the posterior acrylic we add provides posterior occlusion.

Front 14

The appliance we will make in lab, when fabricated for patients should have the following criteria. Select the one that is true
a) Deep posterior indentations to provide a stable occlusion
b) Canine guidance
c) No anterior guidance, which will lock the patient in
d) Deep indentations in the anterior to provide a good centric stop
e) two of the above

Back 14

You do want canine guidance (which is why we trim the anterior section at a 45 deg angle instead of flat like posterior)
No anterior guidance

Front 15

T/F
You complete a fixed prosthetic case on a patient consisting of a combination of crowns and bridges on teeth #2-15. You meticulously adjust the occlusion to obtain perfect canine guidance (canine rise, cuspid disclusion etc.). Your patient moves to california, then returns to your office 15 years later to rejoin your practice. It would be common to discover working and non-working contacts on the posterior teeth during lateral movements.

Back 15

False...in canine protected articulation you do not have working contact or non-working contact.
(although the 15 years later seems like it could certainly change things)

Front 16

T/F
Centric Relation is partially dictated by the masseter, lateral pterygoids, infrahyoid, medial pterygoids and temporalis muscles.

Back 16

False, Just Medial Pterygoid, Temporalis, and Masseter

Components of Centric Relation:
1. Muscles of Mastication
2. Temporomandibular Disc
3. Ligaments of the TMJ
4. Bone & Hard Tissues
5. Soft Tissue

Front 17

When contructing a fixed prosthetic case, the ideal occlusal scheme is?
a) MICP
b) CR
c) Canine guidance
d) Group function
e) All of the above

Back 17

Canine Guidance
Routine dentistry and Fixed Prosthodontics

Front 18

What is the most optimal position of the TMJ?

Back 18

Centric Relation

Front 19

Fill in blank:
Centric relation or optimal musculo-skeletal position of the TMJ determined by:
1.
2.
3.
4.
5.

Back 19

1. Muscles of Mastication
2. Temporomandibular Disc
3. Ligaments of the TMJ
4. Bone & Hard Tissue
5. Soft Tissues

Front 20

When the teeth are not present and the muscles contract, the condyle is positioned in the fossa anteriorly and superiorly this is called ______ and is the Most Optimal position of the TMJ.

Back 20

Centric Relation

Front 21

Can CR Change?

Back 21

Yes (CR can change with soft tissue changes and normal bone growth)

Front 22

What are 3 methods for taking CR interocclusal records?

Back 22

1. Bilateral Manipulation
2. Leaf Gauge
3. Lucia Jig Appliance

Front 23

What determines joint stability in the body?

Back 23

Bone, Muscles, Ligaments, Meniscus

Front 24

Which portion of the TMJ helps prevent the mandible from becoming disarticulated?

Back 24

Oblique component prevents excessive rotation and forces translation on wide opening

Front 25

Which component of the TMJ ligament restricts excessive mandibular posterior movement?

Back 25

Horizontal component

Front 26

What is the purpose of the sphenomandibular and stylomandibular ligaments?

Back 26

Help keep the mandible in the joing and not have it dislocated