Unit 304- ortho

Question 1

overjet and how much

Answer 1

front teeth horizontal gap
2-4 mm gap

Question 2

over bite and how much

Answer 2

deep bite
50%

Question 3

open bite

Answer 3

mouth does not close

Question 4

lip competency

Answer 4

inability to close lips with no strain

Question 4

class 1

Answer 4

normal relationship

Question 5

class 2

Answer 5

L6 is more towards back pushing upper jaw forward

Question 6

class 3

Answer 6

L6 is more forward pushing lower jaw forward

Question 7

class 2 div 1

Answer 7

horizontal incisors
open lip

Question 7

class 2 div 2

Answer 7

teeth just meet

Question 8

class 3 of incisors and also called

Answer 8

upper incisors behind lower
also called prominent lower jaw

Question 9

what is it called if several teeth are missing

Answer 9

hypodontia

Question 10

what does sucking habits cause

Answer 10

cross bite

Question 11

common appliance for bite functional appliance

Answer 11

twinblock

Question 12

how to remove excess cement on ortho

Answer 12

mitchells trimmer

Question 13

patient advice for fixed

Answer 13

-avoid sticky coloured foods
-interdental brushes
-tooth brushing

Question 14

what are end cutters

Answer 14

to cut archwire

Question 15

what are alastik holders

Answer 15

to place rubber bands on

Question 16

removable protheses additional 4 components and explained

Answer 16

-adams crib to retain the appliance in mouth
-springs to move teeth
-retractors to push teeth back
-expansion screws to move several teeth out

Question 17

removable protheses advice

Answer 17

-clean after every meal
-wear as instructed

Question 18

what do you use to adjust acrylic appliance

Answer 18

acrylic trimming bur straight handpiece

Question 19

what is the expansion screw key for

Answer 19

to count number of turns to the screw

Question 20

what is a twinblock for

Answer 20

class 2 allowing mandible to grow forward