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Orthodontics > Wire, Brackets, Aligners > Flashcards

Wire, Brackets, Aligners Flashcards

1
Q
  1. What were the first arch wires used in leveling and aligning?
A
  1. Nickel Titanium
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2
Q
  1. What shape of wire is used to level the curve of Spee?
A
  1. Reverse curve
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3
Q
  1. Ligature ties are a bendable material. They are used as co ties.
A
  1. True/True
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4
Q
  1. What type of wire is used for torque?
A

rectangular

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5
Q
  1. After a canine exposure, what material can you use to tie to a gold chain?
A
  1. Zing String
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6
Q
  1. What type of material is used to hold space that we like?
A

Closed coil spring

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7
Q
  1. Which material is used for space closure?
A

power chain

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8
Q
  1. If you engage the power chain to the distal bracket the teeth will rotate in what direction?
A

mesial

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9
Q
  1. What kind of tie is used to add an elastic to a hook that does not have a bracket?
A

Kobi tie

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10
Q

T/F Using a combination of Ni-ti wire overtop stainless to bring a tooth into the arch is called “Piggyback”

A

true

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11
Q

What are bite turbos used for in orthodontics?

A

ALL OF THE ABOVE ***
1. Helps to open the bite in a deep bite case
2. Helps to jump a cross bite
3. Can help to intrude teeth from biting into the turbo
4. All of the above.

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12
Q

. What makes it possible for nickel-titanium arch wires to exhibit super elastic behavior?

A
  1. This behavior is based on a reversible transformation between the austenitic and martensitic phases
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13
Q

A wire with a low load/deflection rate is capable 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.

A

BOTH TRUE

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14
Q

A wire extending from the molars to incisors is activated to intrude the incisors. What is the side effect on the molars?

A

C. Molars tip distally & extrude

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15
Q

What is another term for Power Tubing?

A

BUMPER TUBING

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16
Q

What type of elastics should not be used on a high mandibular plane angle patient?

A
  1. Class II elastics
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17
Q

What type of elastic wire is often used for a peg lateral?

A

Coil Spring

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18
Q

What is an example of an orthodontic auxiliary?

A
  1. Elastic thread
  2. Power tubing
  3. Coil spring
    All of the above
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19
Q

T/F: you can remove brackets off of a pt that is not technically yours

A

true

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20
Q

T/F: With every force, there is an opposite and equal reaction, which needs an adequate amount of space. There needs to be transverse movement first, before anterior and posterior movement

A

true

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21
Q

If you want to move a mesially rotated maxillary 1st premolar, what tooth would you tie the power chain to? Which way would that tooth rotate?

A
  1. Canine, to the distal
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22
Q

Which ortho wire material would be the best choice for a patient with nickel allergy

A

beta titanium

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23
Q

T/F - Tads can be used alongside other orthodontic appliances.

A

true

24
Q

How many millimeters is one turn in expansion?

A

.25mm

25
Q

What is the primary mechanism of action for the Herbst appliance in correcting a Class II malocclusion?

A

advance the mandible forward

26
Q

How much force is required to move the maxilla?

A

500g

27
Q

Which orthodontic appliance(s) are used to correct anteriorposterior skeletal discrepancies?

A

Headgear
Herbs Appliance

28
Q

Which of the following orthodontic appliances is considered a palatal expander?

A

Quad Helix

29
Q

Doubling the force applied at the bracket of a tooth would have what effect on the rotational tendency during tooth movement?

A
  1. The moment would double.
30
Q

The Herbst appliance is used in the correction of which malocclusion?

A

Class II

31
Q

What is the role of the lower Lingual arch space maintainer?

A

holds position of lower 6s

32
Q

The nature of the bond between the enamel and the resin used to attach an orthodontic bracket is ______.

A

mechanical

33
Q

Use of elastics with good patient cooperation provides the clinician with the ability to correct what discrepancies?

A

both

34
Q

What are the effects of class II elastics?

A

all of the above
(* lower incisor flaring
* Steepening of occlusal plane
* Upper incisor & lower 1st molar extrusion
)

35
Q

The photograph shows a maxillary fixed bilateral space maintainer. This type of space maintainer is also known as a _____________. (B) If both primary canines were present, which of the following space maintainers could be used in place of this appliance that cannot be used in this case?

A

A = nance
B = band and loop bilateral

36
Q

Which of the following teeth is most likely to not erupt into the arch due to overcrowding?

A

second premolars

37
Q

A distal shoe appliance is classified as what kind of appliance?

A

unilateral fixed

38
Q

What is the ideal space maintainer to prevent lingual movement if there is premature loss of the mandibular primary canines?

A

lingual arch

39
Q

An 8-year-old boy came to orthodntic OPD for orthodontic evaluation. On clinical examination, the orthodontist observed that he has a severe anterior open bite and bilateral maxillary constriction. Upon inquiring, the mother said that the boy had a thumb sucking habit. He has permanent incisors and molars and deciduous canines and 1st and 2nd pre-molars in both arches.

A

quad helix

40
Q

True/False: Herbst appliance uses a piston and tube device to passively push the maxilla forward as the patient closes. (False – it pushes the mandible forward)

A

false

41
Q

True/False: The best space maintainer is the primary tooth itself?

A

true

42
Q

T/F: Some advantages of using Rectangular Arch Wires are to control crown & rootu movement.

A

true

43
Q

Which of the following is NOT a type of palatal expander?

A

lingual arch appliance

44
Q
  1. T/F: The most posterior, inferior point on the gonial angle at the junction of the body of the mandible and ramus is GONION
A

true

45
Q

T/F: Patients can be allergic to wire made from Nickel or with Nickel covering. Symptoms include inflammation, itching, or mild irritation.

A

true, true

46
Q

A headgear appliance is used for :

A

both anchorage and traction

47
Q

which of the following has not been proven to be a causative factor in human oro-facial clefting?

A

tylenol

48
Q

All of the following are advantages of the indirect method of bonding brackets to a tooth over the direct method EXCEPT one. Which one is the EXCEPTION?

A

less technique sensitive

49
Q

Which of the following metals is commonly used to make orthodontic wires because of its resilient properties and flexibility?

A

stainless steel

50
Q

All of the following can tie to a hook, button or bracket to bring a tooth into the arch except:

A

power tubing

51
Q

What type of hooks are placed prior to orthognathic surgery for post-surgical elastics?

A

crimpable hooks

52
Q

What is a potential side effect from using CS2000 springs?

A

flare teeth

53
Q

What wires are also known as TMA?

A

beta titanium

54
Q

Which of the following is a goal of using a rapid palatal expander (RPE) in orthodontics?

A

To achieve skeletal separation of the mid-palatal suture

55
Q

T/F: The line joining the ORBITALE and GONION is known as the “Frankfort Plane”.

A

false
(orbitale and porion)

Orthodontics (2 decks)

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