2015 Questions Pt. 2

Question 1

Fastest somatic growth occurs when?

Answer 1

conception to birth

Question 2

What sinus is enlarged in Acromegaly?

Answer 2

Frontal sinus

Question 3

What is not associated with Apert Syndrome?

a. Absence of infraorbital ridge
b. Dolichocephaly
c. Hypoplastic infraorbital ridge

Answer 3

c. Hypoplastic infraorbital ridge

Question 4

What is not associated with Crouzon?

a. Syndactyly
b. Cleft lip/palate
c. Fusion of sutures at 7-8 years old

Answer 4

c. Fusion of sutures at 7-8 years old

Question 5

What does not have delayed tooth eruption?

Answer 5

Either Hemifacial Microsomia or Crouzon

Question 6

Cleft Lip is not associated with what common craniofacial anomaly?

Answer 6

Pierre Robin

Question 7

Wormian bones are found in what craniofacial anomaly

Answer 7

Cleidocranial dysostois

Question 8

T/F
Hep C does not have a vaccine
The most common bloodborne pathogen in the US is Hep B

Answer 8

T

False, most common is Hep C

Question 9

What is importance of HBc?

Answer 9

Anti-HBc = total hepatitis B core antibody
Diagnosis of recent or past hepatitis B infection
Appears shortly after symptoms

Question 10

What is significant about Ameloblastomas?

Answer 10

The polycystic type is more common (86%) and harder to treat (50-90% occurence)

Question 11

How do you NOT treat Ameloblastoma?

Answer 11

Radical dissection

• Polycystic: marginal/block resection
• Unicystic: Enucleate and curettage

Question 12

What is the most common tumor of odontogenic origin?

Answer 12

Odontoma

Question 13

What is the most common place for a sialolith?

Answer 13

Submandibular gland

Question 14

What is the most common salivary gland tumor?

Answer 14

Pleomorphic adenoma

Question 15

T/F
Sterilization will kill all viruses, bacteria, and spores
Disinfection will kill everything but spores

Answer 15

True

True

Question 16

What is location of condyle in CR?

Answer 16

Most superior and anterior

Question 17

Finishing a case with less than 2 mm shift from CR-CO and you want to have coincident midlines.

Answer 17

Occlusal equilibration

Question 18

Patient has a lateral shift, how do you clinically diagnose?

Answer 18

Check midlines

Question 19

T/F
Occlusal interferences cause bruxism
Bruxism is not associated with anxiety and stress.

Answer 19

False

False

Question 20

The most conservative treatment for TMD is

Answer 20

Occlusal splint therapy or flat plane occlusal splint

Question 21

How do you measure maximum opening?

Answer 21

Incisal edge to edge + overbite

Question 22

If a patient is undergoing splint therapy, are these statements true:
Weaning off the splint should start at 5 months
Stop wearing the splint after 3 months

Answer 22

False, 3 months

True, 3 months

Question 23

Patient with an open lock and click on the left side.

Answer 23

Posterior displaced disk on left side

Question 24

Patient with limited opening. What is happened?

Answer 24

CLosed lock - Anterior disk displacement. Is there sound? no sound = without reduction, with sound = with reduction

Question 25

What is restricted in a patient with a closed lock?

Answer 25

Limited lateral movement toward unaffected side. There is deviation toward affected side upon opening. if asking what is false, may have answer like: No deviation on opening

Question 26

T/F | Internal disc derangement = anterior disc displacement

Answer 26

true

Question 27

A patient has ADD without reduction on the right side. Explain what will happen with the mandible

Answer 27

It will deviate to the right on opening. It won't be able to move laterally to the left (unaffected side)

Question 28

Most common cause of TMD

Answer 28

Parafunction

Question 29

If a patient has disk displacement. What would you use to correct it?

Answer 29

Flat plane occlusal splint

Question 30

T/F | TMD is commonly found in the 15-25 year old age group

Answer 30

True (18-35)

Question 31

The articular surface of the TMJ covered with what tisssue?

Answer 31

Fibrocartilage

Question 32

T/F | CBCT gives better image than Medical CT

Answer 32

False

Question 33

Which of the following has the most radiation when imaging the TMJ

Answer 33

Tech-99

Question 34

What radiologic technique is used for detecting active growth?

Answer 34

Tech-99

Question 35

Best way to monitor and evaluate through radiograph condylar hyperplasia

Answer 35

Tech-99

Question 36

What radiographic procedure helps eval perforations of the articular disk?

Answer 36

Arthrography

Question 37

What is the best type of imaging to view an arthritic lesion in TMJ

Answer 37

CT | MRI if it's about the ligament/tissue

Question 38

Smaller voxels have more radiation, why?

Answer 38

More photons

Question 39

Digital x-ray is better than film except?

Answer 39

Increased resolution

Question 40

The effects of ionizing radiation include all except:

Answer 40

Equal effect all tissue.

Question 41

T/F | Equivalent dose does not take into consideration the organ being irradiated

Answer 41

False, It does

Question 42

International commission of radiology (ICRP) uses what?

Answer 42

Equivalent dose

Question 43

When trying to compile data, from multiple x-ray lateral cephs, the most common error is:

Answer 43

Poor landmark identification

Question 44

0.4 voxel size is better in showing what?

Answer 44

Better at showing bone height over bone thickness

Question 45

What is most common error when taking a ceph: a. Patient head position to anode b. Midsagittal plane to film distance c. Vertical head position

Answer 45

a. Patient head position to anode

Question 46

Who first brought cephalometrics to orthodontics?

Answer 46

Broadbent

Question 47

What is the Opisthion?

Answer 47

The most posterior point of the foramen magnum

Question 48

Which of the following is not stable to superimpose on? a. Occiput b. Nasion c. Planum sphenoidum

Answer 48

b. Nasion

Question 49

What are the guidelines for ABO superimposition of the mandible

Answer 49

Register on the internal cortical outline of symphysis and best fit on mandibular canal