ANCHORAGE IN ORTHODONTICS Flashcards by Love Dog

Q

Resistance to unwanted movement

A

ANCHORAGE IN ORTHODONTICS

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Q

“the resistance to unwanted tooth movement”. (Profitt)

A

ANCHORAGE

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Q

ACCORDING TO SITE:

A

Intra-oral sources

Extra-oral sources

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Q

Teeth

A. Intra-oral sources
B. Extra-oral sources

A

A

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Q

Alveolar bone

A. Intra-oral sources
B. Extra-oral sources

A

A

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Q

Cortical bone

A. Intra-oral sources
B. Extra-oral sources

A

A

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Q

Basal jaw bone

A. Intra-oral sources
B. Extra-oral sources

A

A

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Q

Musculature

A. Intra-oral sources
B. Extra-oral sources

A

A

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Q

Cervical

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Occipital

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Cranial

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Facial

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Frontal bone, Mandibular symphysis

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Back of the neck (cervical bone)

A. Intra-oral sources
B. Extra-oral sources

A

B

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Q

Anchor teeth are moved to _____ at old EXO sites

A

cortical bone

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Q

T/f

Cortical

tooth movement is fast as roots encounter cortical bone along resorbed alveolar ridge

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A

F

(tooth movement is SLOWED as roots encounter cortical bone along resorbed alveolar ridge)

Q

MANNER OF APPLICATION OF FORCE

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A

SIMPLE
STATIONARY
RECIPROCAL

Q

Greater number of teeth to move a single tooth

A. SIMPLE
B. STATIONARY
C. RECIPROCAL

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A

A

Q

active movement of one tooth versus several anchor teeth.

A. SIMPLE
B. STATIONARY
C. RECIPROCAL

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A

A

Q

Application of force displaced the anchor units in the same plane of space from which the force is applied
•putting bodily

A. SIMPLE
B. STATIONARY
C. RECIPROCAL

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A

B

Q

•Two teeth or resistance
units of equal size

•moved against each
other

A. SIMPLE
B. STATIONARY
C. RECIPROCAL

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A

C

Q

move the same amount toward or away from each other

A. SIMPLE
B. STATIONARY
C. RECIPROCAL

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A

C

Q

ACCORDING TO THE JAWS INVOLVED

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A

INTERMAXILLARY
INTRAMAXILLARY

Q

anchorage units in one jaw provide the force to move teeth in the same jaw

A. INTERMAXILLARY ANCHORAGE
B. INTRAMAXILLARY ANCHORAGE

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A

B

Teeth being moved in one arch are resisted by teeth in the same arch A. INTERMAXILLARY ANCHORAGE B. INTRAMAXILLARY ANCHORAGE

B

anchorage units in one jaw provide the force to move teeth in the other jaw A. INTERMAXILLARY ANCHORAGE B. INTRAMAXILLARY ANCHORAGE

A

Teeth being moved in one arch are resisted by teeth in the opposite arch A. INTERMAXILLARY ANCHORAGE B. INTRAMAXILLARY ANCHORAGE

A

ACCORDING TO NUMBER OF ANCHORAGE UNITS

1.SINGLE OR PRIMARY 2.COMPOUND 3.MULTIPLE OR REINFORCED

Single tooth with greater alveolar support is used to move a tooth with a lesser alveolar support A. SINGLE OR PRIMARY B. COMPOUND C. Reinforced D. A and b

D

Adding or using more than 1 type of resistance units A. SINGLE OR PRIMARY B. COMPOUND C. Reinforced D. A and b

C

additional teeth to the unit to distribute the force over a larger root surface area in the anchorage unit A. SINGLE OR PRIMARY B. COMPOUND C. Reinforced D. A and b

C

HEADGEAR APPLIANCE 1. •Classification 2. •Function

Classification: fixed-removable active (functional) treatment appliance Function: -for skeletal class II due to maxillary excess increased SNA) -anchorage -anterior deep/open bite