Removable Appliances Flashcards

1
Q

Name the components of a Removable Appliance

A

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

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2
Q

What movement is created with a Removable appliance?

A

Tipping movements

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3
Q

What is a Removable Appliance used for?

A

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

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4
Q

What are the active components of a Removable Appliance?

A

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

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5
Q

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

A

Stainless Steel 0.5mm

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6
Q

What is a Roberts Retractor bow used to move?

A

Retracting proclined and spaced incisors

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7
Q

What is a Roberts Retractor bow used to move?

A

Retracting proclined and spaced incisors

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8
Q

What are Intra Oral Elastics used for

A

•Intrusion
•Extrusion
Eg.displaced canines

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9
Q

Advantages of Elastics in a RA

A

•Direct movement
•Discreet

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10
Q

Disadvantages of Elastics

A

•snapping
•pt complaince

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11
Q

What are screws made of?

A

Stainless Steel and a Central Cylinder

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12
Q

What do Screws achieve?

A

Anterior and posterior movements

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13
Q

What does an anterior labial screw achieve?

A

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

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14
Q

What does a midline screw achieve?

A

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

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15
Q

What does a 3D screw achieve?

A

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

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16
Q

List retentive features of a RM

A

Cribs
Clasps
Bows

17
Q

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

A

SS 0.7mm

18
Q

Where are cribs places?

A

Molars and premolars

19
Q

Where are the cribs located on the tooth surface?

A

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

20
Q

Name different types of clasps

A

Southend “m”
C clasp
Ball ended clasp
Plint clasp

21
Q

Explain the Southend Clasp

A

0.7mm Stainless Steel
Retains the upper incisors

22
Q

Explain the C clasp

A

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

23
Q

Explain the Ball ended clasp

A

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

24
Q

Explain a Plint clasp

A

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

25
Q

Name the Anchorage components on a RA

A

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

26
Q

Explain the baseplate

A

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

27
Q

Explain a Haydrake appliance

A

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

28
Q

Explain a FABP

A

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

29
Q

Explain Posterior Bite Planes

A

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