CORRECTIVE ORTHODONTIC Flashcards by Love Dog | Brainscape

Q

ORTHO :____
ODONT: ____

A

STRAIGHT

TEETH

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Guidance and correction of dentofacial structure

A

ORTHODONTICS

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Scope of Orthodontic treatment (3)

A

.Alteration in tooth position by moving teeth

Alteration in skeletal pattern by orthopedic changes

Alteration in soft tissue pattern

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Recognition of presence of malocclusion

A

Corrective Orthodontics:

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Employs procedures to reduce or eliminate the problem and its sequelae

A

Corrective Orthodontics

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Corrective Orthodontics Uses _____, functional, surgical

A

mechanical

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

TYPES OF APPLIANCES USED IN ORTHODONTICS

A

REMOVABLE ORTHODONTIC APPLIANCE
FIXED ORTHODONTIC APPLIANCE

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Indications:
• Growth modifications in the mixed dentition

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Indications

Limited tooth movements

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Indications:
Retention after ortho treatment

• Interferes with or prevents development of abnormal orofacial habits

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Advantages:
• small in size
• simple design
• Light in weight
• easy to clean

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Advantages:

• low cost
• more esthetic
• no need for special equipment

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Disadvantages:
• not effective with uncooperative patient

• used for minor cases of malocclusion

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Disadvantages:

allows simple tooth movements (arch expansion; repositioning of individual teeth;tipping

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

No control over root movement

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Needs patient cooperation

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

have attachments on the teeth that cannot be removed by the patient and forces are exerted on these attachments to move teeth

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Control of treatment mechanics are transferred to the clinician

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Advantages:

Movement of individual teeth in 3 planes can be achieved

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Advantages:
Movement is more precise

Patient cooperation is reduced

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

Q

Disadvantages:

Problem on oral hygiene
Esthetics
More expensive than removable appliances

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

Q

Disadvantages:

Increased chair time

Special training needed

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

Q

Anchorage control is more difficult

A. REMOVABLE ORTHODONTIC APPLIANCE
B. FIXED ORTHODONTIC APPLIANCE

A

B

Q

COMPONENTS OF FIXED APPLIANCE “braces”

A

ACTIVE COMPONENT

PASSIVE COMPONENST

Q

Archwires

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

A

Q

Springs

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

A

Q

Force ElastIcs

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

A

Q

Lingual button

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

B

Q

Brackets Buccal tubes

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

B

Q

Bands

A. ACTIVE COMPONENT
B. PASSIVE COMPONENST

A

B

Q

3 major properties of orthodontic wire materials:

A

STRENGTH

STIFFNESS

RANGE

Q

measure of maximum possible load or greatest force a wire can sustain or deliver if loaded to its limit

A

STRENGTH

Q

measure of force needed to bend or deform a wire to a definite distance; opposite of springiness

A

STIFFNESS

Q

amount of elastic activation a wire can sustain before permanent deformation

A

RANGE

Q

STAINLESS STEEL (1930’S)

A

18% chromium; 8% nickel

Q

T/f

NICKEL-TITANIUM ALLOYS (1970’s)

• 1. superelastic
• 2. shape memory
• 3. thermoelastic

A

T

Q

low stiffness, moderately high strength; high range, low formability

A

NICKEL-TITANIUM ALLOYS

Q

Transition between 2 structures that are fully reversible at low temperatures

A

Ni Ti

Q

two major NiTi phases

A

Austenitic NiTi (austenite)

Martensitic NiTi (martensite)

Q

occurs at high temperatures and low stress

A. Austenitic NiTi (austenite)
B. Martensitic NiTi (martensite)

A

A

Q

forms at at low temperatures and high stress

A. Austenitic NiTi (austenite)
B. Martensitic NiTi (martensite)

A

B

Q

Shape memor: y
capability of NiTi wires to be plastically deformed in their ____ phase. If heated above a certain temperature range they will return to an austenite phase, recovering their initial form

A

martensite

Q

Superelasticity
transformation from austenitic to martensitic phase that occurs by ____ application within a temperature rang

A

stress

Q

According to Burstone; Criteria for wire selection: ___

A

stiffness

Q

Types of Orthodontic Forces According
Duration of Application of a force :

A

CONTINUOUS FORCE
• 2. INTERRUPTED
• 3. INTERMITTENT

Q

fraction of the original force is maintained from one patient visit to another

A

CONTINUOUS FORCE

Q

Force declines to zero between applications

A

INTERRUPTED FORCE

Q

Force levels decline abruptly to zero when an appliance is removed or when a fixed appliance is deactivated and resumes when reinserted

A

Intermittent force