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Ortho > Removable And Fixed Appliances : The Basics (Resident) > Flashcards

Removable And Fixed Appliances : The Basics (Resident) Flashcards

1
Q

Removable appliances advantages

A

Fabricated in lab, decreases dentist chair time
Removable and almost invisible

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2
Q

Removable appliances disadvantages

A

Depend heavily on patient compliance
Had to obtain 2 point contact for complex tooth movement

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3
Q

Types of removable appliances

A

Passive
Active

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4
Q

Appliance that does not move any teeth or bone, prevents tooth movement, AKA retainers

A

Passive removable appliance

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5
Q

Appliance that is made to move teeth, basal bone or dento- alveolar base, causes tooth movement or modifies/guides growth

A

Active removable appliance

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6
Q

What country focused more on fixed appliances

A

USA
Edward angle
Focused on precise tooth positioning

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7
Q

Which country focused more on removable appliances

A

Europe
Social welfare system
Limited ortho tx
Precious metals less available

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8
Q

Crozat appliance

A

George Croazat- early 1900s
Clasps for first molar
Heavy gold wires for framework
Light finger springs

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9
Q

Types of active removable appliances

A

Functional appliances
Active plates for tooth movement
Clear aligned therapy

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10
Q

Functional appliances

A

For growth guidance
Adolescents, less in children

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11
Q

Active plates for tooth movement

A

Expansion or minor tooth movements
Preadolescents, adolescents and occasionally adults

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12
Q

Clear aligner therapy (CAT)

A

Invisalign
Adults, some teens

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13
Q

Types of functional appliances

A

Bionator
Frankel
Twin block

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14
Q

Goals of functional appliances

A

Position jaws or soft tissue
Guide growth during growth spurt
Use growth for Class II or Class III correction

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15
Q

Types of Active plate appliances

A

Expander
Spring aligner
Retainer with finger springs

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16
Q

Goals of active plate appliances

A

Move teeth within bone
Expanders to open palatal suture
Create mostly tipping motion for minor tooth movements

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17
Q

Types of clear aligner therapy

A

Invisalign
Clear correct
Sure smile elemetrix
MTM clear aligner (dentsply)

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18
Q

Goals of CAT

A

Provide esthetic alternative to braces
Attachments are needed for complex tooth movements
Sequence of tray that move teeth 0.25 mm / week

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19
Q

What is great for ortho relapse, the main movement is tipping of teeth, Class I with mild spacing or crowding, usually needs some interproximal reduction, requires buttons for complex movement and is occasionally used for fix appliance to finish

A

CAT

20
Q

Types of passive removable appliances

A

Retainers
Removable space maintainers
Removable habit appliances (not recommended)

21
Q

Two types of retainers

A

Hawley
Essex

22
Q

Hawley retainers

A

Can add elements that help to retain your treatment
Anterior bite plates
Posterior bite plates

23
Q

Anterior bite plates

A

Allows posterior tooth eruption by only allowing anterior occlusion
For deep bite

24
Q

Posterior bite plates

A

Prevents posterior tooth eruption by invading the leeway space
For open bite

25
Q

Order of fixed appliances history

A

E arch —> ribbon arch —> edgewise

26
Q

Edgewise appliances

A

Rectangular wire in rectangular slot
Used to need to bend wire for each tooth
All brackets were the same but all teeth are not the same

27
Q

Types of bends edgewise appliances

A

1st order = in-out
2nd order = mesial-distal tip
3rd order = facio-lingual torque

28
Q

Most common bracket prescriptions

A

MBT and Roth

29
Q

Parts of fixed appliances

A

Brackets
Bands
Wires
Ligatures
Auxiliaries
Elastics

30
Q

Slot and size orientation of brackets

A

0.018 in or 0.022 in

31
Q

Number of wings on brackets

A

Single
Double
Triple

32
Q

Material of brackets

A

Metal
Ceramic

33
Q

Function of brackets

A

Traditional
Self ligating

34
Q

Placement of brackets

A

Facial
Lingual

35
Q

Bracket components

A

Slot
Hook
Wing
Base

36
Q

Size of bands

A

Perform a try in
Depending on the exact six of tooth

37
Q

Bands - types of brackets/auxiliaries

A

Tubes for headgear
Hooks
Etc

38
Q

Wire material

A

Stainless steel, TMA, NiTi, CuNiTi
Heat activated, super elastic

39
Q

Which wire material is easier to bend

A

TMA

40
Q

Shape of wire

A

Round - 0.014, 0.016, 0.018
Square- 16x16, 18x18
Rectangular - 16x22, 17x25, 19x25, 21x25

41
Q

SS properties -

A

Stiffness - high
Formability - high
Range- low

42
Q

TMA properties - stiffness, formability, range

A

Stiffness - Medium
Formability - High
Range- Medium

43
Q

NiTi properties -stiffness, formability, range

A

Stiffness- low
Formability - low
Range- high

44
Q

Ligatures

A

Elastomeric ligatures or o rings
Power chain
Stainless steel

45
Q

Auxiliaries

A

Springs
Hooks

46
Q

Elastics

A

For classification
Different diameters and strength

Ortho (19 decks)

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