ORTHODONTICS (Dentistry) FINAL EXAM 2 STUDY QUESTIONS AND AN

1 / 13

ORTHODONTICS (Dentistry) FINAL EXAM 2 STUDY QUESTIONS AND ANSWERS (with diagrams) MULTIPLE CHOICE A+ GRADED.

• What were the first arch wires used in level-

ing and aligning?

• Nickel Titanium
• Stainless Steel
• Nanocoated
• Gold Alloy
• Nickel Titanium

• What shape of wire is used to level the curve

of Spee?

• Orthoform I
• Reverse curve
• Ovoid
• A & C
• Ligature ties are a bendable material. They

are used as co ties.

• True/True
• True/False
• False/False
• False/True
• Reverse curve

• True/True

• What type of wire is used for torque?
• Round
• Rectangular
• Both A and B
• None of the Above
• After a canine exposure, what material can

you use to tie to a gold chain?

• Beta-ti wire
• Close coil springs
• Floss
• Zing String
• Rectangular

• Zing String

2 / 13

ORTHODONTICS (Dentistry) FINAL EXAM 2 STUDY QUESTIONS AND ANSWERS (with diagrams) MULTIPLE CHOICE A+ GRADED.

• What type of material is used to hold space

that we like?

• Open coil spring
• Closed coil spring
• Zing string
• Power tubing
• Which material is used for space closure?
• Close coil springs
• Power tubing
• Power chain
• Floss
• If you engage the power-chain to the distal

bracket the teeth will rotate in what direction?

• Mesial
• Distal
• Intrude
• Extrude
• What kind of tie is used to add an elastic to a

hook that does not have a bracket?

• Steel tie
• Ligature tie
• Plastic hook
• Kobi tie
• Closed coil spring

• Power chain

• Mesial

• Kobi tie

• Using a combination of Ni-ti wire overtop

stainless to bring a tooth into the arch is called "Piggyback"

• True
• False
• What are bite turbos used for in orthodon-

tics?

• Helps to open the bite in a deep bite case
• Helps to jump a cross bite
• Can help to intrude teeth from biting into

the turbo

• True

• All of the above.

3 / 13

ORTHODONTICS (Dentistry) FINAL EXAM 2 STUDY QUESTIONS AND ANSWERS (with diagrams) MULTIPLE CHOICE A+ GRADED.

• All of the above.
• None of the above apply to the use of bite

turbos

• What makes it possible for nickel-titanium

arch wires to exhibit super elastic behavior?

• This behavior is based on a reversible

transformation within the austenitic phase.

• This behavior is based on a reversible

transformation between the austenitic and martensitic phases.

• This behavior is based on a reversible

transformation within the martensitic phase.

• This behavior is based on an irreversible

transformation within the martensitic phase

• A wire with a low load/deflection rate is capa-

ble of generating constant forces that do not depend much on the amount of activation.Bending loops into an arch wire reduces its load/deflection rate by increasing the wire length.

• Both true
• Both false
• First statement is true, second statement

is false.

• First statement is false, second statement

is true.

• A wire extending from the molars to incisors

is activated to intrude the incisors. What is the side effect on the molars?

• Molars tip forward & intrude.
• Molars rotate mesiobuccally
• Molars tip distally & extrude
• Molars rotate distobuccally
• What type of elastics should not be used on

a high mandibular plane angle patient?

• Power tubing

• This behavior is based on

a reversible transformation between the austenitic and martensitic phases.

• Both true

• Molars tip distally & ex-

trude

• Class II elastics

4 / 13

ORTHODONTICS (Dentistry) FINAL EXAM 2 STUDY QUESTIONS AND ANSWERS (with diagrams) MULTIPLE CHOICE A+ GRADED.

• What is another term for Power Tubing?
• Bumper Tubing
• Plumper Tubing
• Dumper Tubing
• Slumber Tubing
• What type of elastic wire is often used for a

peg lateral?

• Power Tubing
• Slumber Tubing
• Stainless steel
• Coil Spring

• What is an example of an orthodontic auxil-

iary?

• Elastic thread
• Power tubing
• Coil spring
• All of the above
• You can remove brackets off of a pt that is not

technically yours?

• True
• False
• With every force, there is an opposite and

equal reaction, which needs an adequate amount of space. There needs to be trans- verse movement first, before anterior and posterior movement

• True
• False
• Bumper Tubing

• Coil Spring

• All of the above

• True

• True

• Class III elastics
• Band and Loop space maintainer
• Class II elastics