Wire Bending

Question 1

What is the foundation of all orthodontic appliance

Answer 1

Wire

Question 2

Classification of wire

Answer 2

Designor cross section form
Diameter
Composition

Question 3

Why are there different desing of the tip of the wire

Answer 3

Increases efficiency of wires in a certain direction

Question 4

Viewed at the tip or end wires maybe half round, oval square or rectangle

Answer 4

Design

Question 5

Rod in the ____ size in the tube can revolve without resistance from the tube thus itcan move vertically or horizontally or tip the tooth

Answer 5

Exact size

Question 6

Rod of ___ size in the tube can frely moved in the tube and creates a “play” where it lesens it influence on the movement of the tubes direction

Answer 6

Lesser size

Question 7

Mostly used orthodontic brackets size

Answer 7

.024 or .022 or .016

Question 8

5 metals that are used in orthodontic

Answer 8

Gold
Stainless steel
Elgiloy
Nickel silver
Nitinol or nickel titanium

Question 9

In its pure state it is soft malleable and ductile

It is not affected by oral fluids

Answer 9

Gold

Question 10

Corrosion resistant steel

Answer 10

Stainless steel

Question 11

Strength in small diameter

Answer 11

Stainless steel

Question 12

A cobalt nickel spring alloy

Not. Stainless steel

Answer 12

Elgiloy

Question 13

Ductile easily workable

More corrosion resistant that stainless steel

Answer 13

Elgiloy

Question 14

Composition of elgiloy that provides tougness

Answer 14

Cobalt - 40% composition

Question 15

Composition of elgiloy that fix the color

Answer 15

Chromium - 20% as mordant

Question 16

Composition of elgiloy that provides mhardness malleability and ductility

Answer 16

Nickel - 15%

Question 17

Composition of elgiloy that provides hardness only

Answer 17

Molybdenum - 7%

Question 18

Composition of elgiloy. Combining element

Answer 18

Carbon 15%