Lab 4 Bends

Question 1

17x25 TMA is usually satisfactory, but if there are any torque changes to be made in the wire, it is best to use a?

Answer 1

19X25 TMA in a 0.022 slot

Question 2

• In-out bends
• Buccolingual/labiolingual
• Rotational movement

Answer 2

First order bends

Question 3

• Tip bends
• Mesiodistal movements

Answer 3

Second order bends

Question 4

Torque

Answer 4

Third order bends

Question 5

Horizontal change relative to line of occlusion.

Answer 5

1st order bends

Question 6

Affect expansion or contraction (e.g., use it to correct crossbite)

Answer 6

1st order bends

Question 7

Help in derotation.

Answer 7

1st order bends

Question 8

First order bend in between premolar and molar is known as?

Answer 8

Anti-rotation or Toe-in bend

Question 9

First order bends are? (4)

Answer 9

• Lateral inset
• Canine eminence
• Molar offset
• Antirotation bends

Question 10

First order special plier?

Answer 10

Hammerhead pliers (step pliers)

Question 11

Used to make bends in various “step heights” (1mm, .75mm, .5mm, .25mm)

Answer 11

Hammerhead pliers

Question 12

If step pliers are used, steps can be quickly, efficiently, and easily bent on ______ wires.

Answer 12

NiTi

Question 13

Bends in the occluso-gingival direction to maintain the final angulation of teeth.

Answer 13

2nd order bends

Question 14

Represents vertical change.

Answer 14

2nd order bends

Question 15

• In incisal area, they provide ideal angulation of teeth.
• In posterior area, they maintain distal tipping and cause bite opening.

Answer 15

2nd order bends

Question 16

Used in:
- paralleling roots adjacent to extraction spaces
- setting up posterior anchorage
- artistically positioning of teeth

Answer 16

2nd order bends

Question 17

3 types of second order bends?

Answer 17

• tip back bends
• V bends
• artistic positioning bends

Question 18

An upward and downward bend, used for preparing anchorage in posterior segment.

Answer 18

Tip back bends

Question 19

Tip back bends are usually placed between, which tooth #?

Answer 19

5-6 & 6-7

Question 20

Tip back bends should be at least?

Answer 20

20 degrees

Question 21

Used to obtain axial changes in the bucco-lingual / labio-lingual root and crown axis.

Answer 21

3rd order bends

Question 22

Involves twisting of wires.

Answer 22

3rd order bends

Question 23

What are the 2 types of torque?

Answer 23

1) Bucco-lingual root torque
2) Bucco-lingual crown torque

Question 24

These are usually used in pairs to give individual labial or lingual torque to make 3rd order bends.

Answer 24

Rose torquing pliers