Ortho Lec Quiz Part 2 : anchorage

Question 1

Refers to the nature and degree of
resistance to displacement offered by
an anatomic unit when used for the
purpose of effecting tooth movement

Answer 1

Anchorage

Question 2

It is the resistance to unwanted tooth
movement

Answer 2

Anchorage

Question 3

Parts of an Orthodontic
Appliance

Answer 3

1. Active elements
2. Resistance elements

Question 4

PART OF ORTHODONTICS APPLIANCE

It is concerned with tooth movements

Answer 4

Active element

Question 5

PARTS OF ORTHODONTIC APPLIANCE

Provide the resistance (anchorage) that makes the tooth movements possible.

Answer 5

Resistance elements

Question 6

For every action, there is an equal and
opposite reaction

Answer 6

Newton’s law

Question 7

3 Classification of Anchorage:
According to the Manner of Force
Application

Answer 7

1. Simple Anchorage
2. Stationary Anchorage
3. Reciprocal anchorage

Question 8

Resistance to tipping, meaning, the tooth is free to tip during movement.

Answer 8

Simple Anchorage

Question 9

Resistance to bodily movement,
meaning, the tooth is permitted to
translate only

Answer 9

Stationary Anchorage

Question 10

Two or more teeth moving in opposite directions and pitted against each other by the appliance. Both resistance units are malposed and the dissipation of the equal and opposite forces tends to move each unit toward a more normal occlusion

Answer 10

Reciprocal anchorage

Question 11

Classification of anchorage According to the jaws involved

Answer 11

1. Intra-maxillary
2. Intermaxillary

Question 12

Anchorage established in the same jaw.

Answer 12

Intra-maxillary

Question 13

Anchorage distributed to both jaws.

Answer 13

Intermaxillary

Question 14

Classification of Anchorage: According to the site of anchorage

Answer 14

1. Intra-oral
2. Extra-oral

Question 15

Anchorage established within the mouth, utilizing the teeth, mucosa or other intra - oral structures.

Answer 15

Intra-oral

Question 16

Anchorage obtained outside the oral cavity

Answer 16

extra-oral

Question 17

Sources of Anchorage
Cervical - Utilizing the neck ( neck straps)
Occipital - Utilizing the occipital region (head gears)
Cranial - Involving the cranium ( high pull head gears)
Facial - involving the aspects of the face ( face masks)

Answer 17

take note

Question 18

Classification of Anchorage: according to the number of anchorage units

Answer 18

A. Single or Primary Anchorage
B. Compound Anchorage
C. Multiple Anchorage

Question 19

Anchorage involving only one tooth

Answer 19

Single or Primary Anchorage

Question 20

Anchorage involving two or more teeth

Answer 20

Compound Anchorage

Question 21

1. Anchorage in which more than one type of resistance unit is utilized
   • Tissue and tooth borne anchorage
   • Reinforced anchorage

Answer 21

Multiple Anchorage

Question 22

• Is derived from implants, miniplates that are secured with screws to the basal bone of the maxilla and mandible.
• A screw with a channel for attaching a spring that is placed in the alveolar bone.
• Are used to enhance orthodontic
anchorage, providing stability and able to withstand orthodontic force levels.

Answer 22

Temporary Anchorage Devices (TADS)

Question 23

Characteristics of an ideal Anchorage Device

Answer 23

1. Simple to use
2. Inexpensive
3. Immediately loadable
4. Small dimension
5. Withstand orthodontic forces
6. Immobile
7. Does not require compliance
8. Biocompatible
9. Provide superior result
10. Can be fixed to bone cortically or
    biochemically ( osseointegrated)

Question 24

Biocompatible TADS

Answer 24

1. A surgical fixation method like screws
2. A modification of a dental implant

Question 25

Advantages of TADS

Answer 25

• It makes difficult or impossible tooth
movement possible especially in the
adults
• No movement of other teeth that are
not intended to be moved.