Ortho

Question 1

When can the RDA use the ultrasonic scaler to remove cement?

Answer 1

RDA & cert in ultrasonic scaler

Excess cement & cemented ortho bands

Question 2

What might you suspect of the teeth are not separated and sulcus is inflamed?

Answer 2

Separator slipped into sulcus

Question 3

Define class 2 and class 3 of intermax elastics?

Answer 3

Class 2 elastic extends from max ant to mand post MAND PROTRUSION
Class 3 extends from max post to mand ant MAND RETRUSION

Question 4

In what direction is a ligature tie twisted?

Answer 4

CLOCKWISE

Question 5

What will occur if a ligature wire is too tight?

Answer 5

Break by tension

Question 6

Brass wires should be inserted w/ what instrument?

Answer 6

Howe pliers

Hemostat pliers

Question 7

Who can adjust head gear?

Answer 7

Dentist

Question 8

What are the hawe’s and jackscrew appliances for?

Answer 8

Palatial expansion divider

Used to treat crossbite by widening the max arch at the sutures

Question 9

How do you remove an elastic separator?

Answer 9

W/ a scaler pulling away from ging tissue

Question 10

What is the appropriate way to insert headgear?

Answer 10

One side at a time

Question 11

Who can remove TP springs and brass wire separators?

Answer 11

DA

Direct supervision

Question 12

How long should the twist be on a ligature tie and in what direction should it be bent?

Answer 12

Cut 4-5 mm and tuck under arch wire

Question 13

In what 2 ways can arch wife’s not be ligated into the ortho brackets?

Answer 13

Ligature wires- “A ties”

Elastic ligatures- “O ties”

Question 14

What is a hawley retainer?

Answer 14

Most common ortho retainer

ONLY DENTIST ADJUSTS IT

Question 15

What should you do if the arch wire does not seat?

Answer 15

Check the end of the arch wire
Look for debri on bracket and tube
Check wire
And tell dentist

Question 16

On what area is the tooth should the band be placed?

Answer 16

Middle 1/3rd of the crown

Question 17

Why might you place foil over the teeth at a banding appt?

Answer 17

To isolate the teeth from saliva

Question 18

Why is it important to locate a loose band?

Answer 18

A loose band could cause:
Straining
Decalcification 
Caries
Strong odor and tastes 
Plaque build up

Question 19

How is a band removed?

Answer 19

Teflon beak of pliers is placed on occ
Other beak on edge of band
Squeeze pliers together and the band is lifted free

Question 20

Who may place separators?

Answer 20

DA- ONLY elastics
RDA- ALL TYPES
Both under direct supervision

Question 21

What is the appropriate method for measuring arch width?

Answer 21

Use a bow divider to measure the distance from the tip of the cusp of the right cuspid to the tips of the cusp of the left side

Question 22

Define:

Overbite

Answer 22

Vert distance b/w max teeth extended over mand ant

Question 23

Define:

Overjet

Answer 23

Horizontal distance b/w ant mand and max arches

Question 24

List Angle’s class of malocclusion:

Answer 24

Neutroclusion= Class 1 
Distoclusion= Class 2 
Mesioclusion= Class 3

Question 25

What pliers are of choice for the placement of the arch wire into the buccal tube and brackets?

Answer 25

Weingart pliers=preferred

Howe= acceptable

Question 26

What arch dominates the pull force of the intermax elastics?

Answer 26

Max arch

Question 27

What is the purpose of the intermax elastics?

Answer 27

Aid in alignment of the teeth and arches