Midterm another one

Question 1

The easiest movement in orthodontics is..

Answer 1

Tipping

Question 2

Precision attachments are

Answer 2

Composite spots on teeth that make Invisalign trays more effective

Question 3

The possible reasons of early loss of primary tooth
a. Caries
b. Eruption of large primary tooth
c. Trauma

a & b
a only

Answer 3

All of the above

Question 4

Bilateral posterior crossbite, what is the most likely severe skeleteal..

Answer 4

?

Question 5

What a movement that is particularly difficult with Invisalign, what might the treating Doctor do?

a. Use precision attachments
b. Slow down the movements in each tray
c. Over correct the problem

Answer 5

A, B and C

Question 6

Which is NOT an indication for extraction of an ankylosed primary tooth?

Answer 6

Ectopic eruption of succedaneous tooth

Question 7

Which is FALSE regarding a retained primary tooth?

Succedaneous tooth formed 2/3
Must always be extracted
Can occur in the absence of a succedaneous tooth
The contralateral tooth may be lost

Answer 7

Must always be extracted is the FALSE answer

Question 8

A gross facial asymmetry present at birth may be indicative of a developmental anomly

Answer 8

T

Question 9

Causes of dental Asymmetry?

Ankylosed #6
Agenisis of #10
Impaction of #6
Peg lateral #7
All of the above

Answer 9

All of the above are causes of dental asymmetry

Question 10

What is the LEAST helpful in determining asymmetry?

Cephalic Radiograph

Bite Registration

CBCT

Answer 10

Bite Registration

Question 11

What effect would early loss of primary canine have?

Incisors may shift toward edentulous space

Over eruption of contralateral tooth

Answer 11

Incisors may shift toward the edentulous space

Question 12

What is true of serial extraction?

Early removal of primary teeth?

Not used often today, as brackets are used instead of bands?????

Removal of all priamry teeth in order to see how permanent teeth come in

Removal of all primary anteriors to al room for permanent teeth

Answer 12

Not used often today, as brackets are used instead of bands*?

RV

Question 13

Which is true of impacted canine?

Orthodontist will forcefully move into occlusion
Periodontist will expose canine surgically
Prosthodontist replaces extracted ankylosed canine

Answer 13

All of the above

Question 14

In the case of an early 0 lost primary molar and mesially eruption permanent first molar, what do you do?

Answer 14

Distalized and upright the molar to maintain arch perimeter

Question 15

Class II deep bite patient (Intraoral photos & pano given)
Which is not a concern with this patient?

Answer 15

High mandibular angle

Question 16

What treatment would you lkely use with this patient

Answer 16

Hawley with anterior bite block

Question 17

Pt with hidden open bite (intraoral photos given)
What are you concerned with this patient?

Answer 17

High mandibular plane angle

Question 18

What are you concerned with in treating this patient?

a. No concerns, proceed with placing brackets
b. Getting the patient into ideal occlusion
c. Worsening the patients open bite

Answer 18

B and C only