Removable Appliances

Question 1

Name the components of a Removable Appliance

Answer 1

A- Active
R- Retention
A- Anchorage
B- Baseplate

Question 2

What movement is created with a Removable appliance?

Answer 2

Tipping movements

Question 3

What is a Removable Appliance used for?

Answer 3

•Simple movements
•tip teeth
• Maintain Space
•Overbite reduction

Question 4

What are the active components of a Removable Appliance?

Answer 4

B- Bows
E- Elastics
S - Screws
S - Springs

Question 5

What is the size of a active labial bow wire and what is it made out of?

Answer 5

Stainless Steel 0.5mm

Question 6

What is a Roberts Retractor bow used to move?

Answer 6

Retracting proclined and spaced incisors

Question 7

What is a Roberts Retractor bow used to move?

Answer 7

Retracting proclined and spaced incisors

Question 8

What are Intra Oral Elastics used for

Answer 8

•Intrusion
•Extrusion
Eg.displaced canines

Question 9

Advantages of Elastics in a RA

Answer 9

•Direct movement
•Discreet

Question 10

Disadvantages of Elastics

Answer 10

•snapping
•pt complaince

Question 11

What are screws made of?

Answer 11

Stainless Steel and a Central Cylinder

Question 12

What do Screws achieve?

Answer 12

Anterior and posterior movements

Question 13

What does an anterior labial screw achieve?

Answer 13

•Anterior labial movement
•proclines the anterior region
• Corrects anterior crossbites

Question 14

What does a midline screw achieve?

Answer 14

•Expands the upper arch
•Corrects buccal crossbites
• Moves 2 groups at the same time

Question 15

What does a 3D screw achieve?

Answer 15

•combination of Anterior and Midline Screw
•proclines ants and expands the arch
•two screws turned at seperate occassions

Question 16

List retentive features of a RM

Answer 16

Cribs
Clasps
Bows

Question 17

What are the wire measurements of a retentive component on a RA

Answer 17

SS 0.7mm

Question 18

Where are cribs places?

Answer 18

Molars and premolars

Question 19

Where are the cribs located on the tooth surface?

Answer 19

•1mm undercut
•lies at or just below ging margin
•mesial and distal

Question 20

Name different types of clasps

Answer 20

Southend “m”
C clasp
Ball ended clasp
Plint clasp

Question 21

Explain the Southend Clasp

Answer 21

0.7mm Stainless Steel
Retains the upper incisors

Question 22

Explain the C clasp

Answer 22

Used for avoiding Occlusal interference
Undercut @ the ging margin of canines and molars

Question 23

Explain the Ball ended clasp

Answer 23

0.7mm SS
U + L ants and premolars
Interproximal
Used on TB
But can create spacing

Question 24

Explain a Plint clasp

Answer 24

On maxillary molar bands
Looks like @
Used with fixed appliances and headgear

Question 25

Name the Anchorage components on a RA

Answer 25

Baseplate
- acrylic against the palatal vault
- colleting
- trasmits the force along the plate

Question 26

Explain the baseplate

Answer 26

-self/coldcure
-houses the ither componants
-connects wires and cribs
-provides anchorage

Question 27

Explain a Haydrake appliance

Answer 27

-Baseplate and wire behind upper incisors
-stops digit suckers
-retracts Incisors and corrects posterior crossbites

Question 28

Explain a FABP

Answer 28

-Anterior propped open
-Allows molars to erupt
-reduces deep bites

Question 29

Explain Posterior Bite Planes

Answer 29

-posterior surface covered and propped open
-stops occlusal interference
-helps to correct ant/post crossbites