ortho

Question 1

what class is it when the upper incisors protrude and the overjet is increased more than 2-4mm?

Answer 1

Class II div I

Question 2

what class is it when the upper central incisors tilt inwards giving a decreased overjet and increased overbite?

Answer 2

Class II div II

Question 3

what class is it when the chin appears prominent?

Answer 3

Class III

Question 4

neutrocclusion 2-4mm overjet and 30-50% overbite

Answer 4

class I

Question 5

what is an overbite?

Answer 5

vertical measurement

Question 6

what is an overjet?

Answer 6

horizontal measurement

Question 7

what does traumatic overjet/ overbite mean?

Answer 7

causes pain to the gums either lower buccal gum with overjet or palate with overbite.

Question 8

what appliance can be used for the movement of teeth forwards or backwards in each arch?

Answer 8

removable and fixed

Question 9

what appliance can be used for the movement of jaws in relation to eachother?

Answer 9

functional and fixed

Question 10

what appliance can be used to align slightly misplaced teeth in an arch?

Answer 10

removable and fixed

Question 11

what appliance can be used to align severly misplaced teeth in an arch?

Answer 11

fixed

Question 12

what appliance is used for derotation of teeth?

Answer 12

fixed

Question 13

what appliance is used for guided eruption of unerupted teeth?

Answer 13

fixed

Question 14

what appliance is used for a deep overbite?

Answer 14

fixed and removable

Question 15

flexible nickle titanium or stainless steel wires to fasten into the brackets or bands.

Answer 15

arch wire

Question 16

right angled cutters to trim the end of the arch wire after replacement

Answer 16

end cutters

Question 17

rubber bands to hold the arch wire into the slots of each bracket

Answer 17

alastiks

Question 18

ratcheted holders to apply the alastiks to brackets

Answer 18

alastik holders

Question 19

metal or ceramic components to attach to each tooth if any have been lost since last appointment

Answer 19

brackets

Question 20

metal rings to attach to molars especially

Answer 20

bands

Question 21

used instead of a molar band where orthodontic forces are unlikely to dislodge the tube

Answer 21

buccal tube

Question 22

to hold and position each bracket to the centre of the tooth, if any replacements are required

Answer 22

bracket holders

Question 23

to remove brackets and bands and any residual bond before replacing

Answer 23

bracket and band removers

Question 24

acid etch and orthodontic resin bond material to hold brackets onto the tooth

Answer 24

bonding materials

Question 25

any luting cement material to hold bands onto the molar teeth

Answer 25

band cement

Question 26

what are the main instructions to care for orthodontic appliances? (5)

Answer 26

• clean with a manual toothbrush after every meal
• daily use of interdental brushes
• avoid fizzy drinks and sugary foods for the whole treatment period
• use a fluoride mouthwash
• use disclosing treatments

Question 27

to adjust all metal springs and retractors as necessary

Answer 27

Adams crib pliers

Question 28

to adjust all acrylic areas pf the appliance

Answer 28

straight hand piece and acrylic trimming bur

Question 29

to record any measurable tooth movement such as the overjet

Answer 29

measuring ruler

Question 30

to count the number of turns applied to the screw between visits to ensure compliance by the patient

Answer 30

expansion screw key

Question 31

retain the appliance in the mouth usually fit onto molar or premolar teeth and made of stainless steel

Answer 31

Adams cribs

Question 32

to move the teeth along the arch

Answer 32

springs

Question 33

what is an example of a functional appliance?

Answer 33

twin block

Question 34

how regularly are Invisalign aligners changed?

Answer 34

2 weeks

Question 35

how many hours a day do you have to wear removable braces for?

Answer 35

22 hours a day