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Ortho Final Old Tests > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

What movement is made when a maxillary Hawley with an active finger spring is located lingual to a central incisors

Translation
Tipping??
Torqueing
Opening bite

A

tipping

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2
Q

The introduction of a coil into spring design serves to make a

A

smaller force for a given deflection

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3
Q

The forces that is occurring during mastication versus during orthodontics is different in that the forces of mastication are due to

Gingival fibers
Supraperiosteal fibers
Incompressibility of the fluid
A decreased amount of force

A

answer not given

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4
Q

Which of the following is true concerning optimum force

A

Different forces for different movements

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5
Q 
Which is true concerning frontal resorption
Due to light prolonged forces
Due to heavy prolonged forces
Occurs after 7-10 days
Occurs after 4 hours
A

Due to light prolonged forces

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6
Q

Pure translation occurs without tipping, torqueing, or rotation if force is applied to

The center of resistance
The center of rotation
The apex of the root
The center of the bracket slot

A

The center of resistance

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7
Q 
The type of movement that requires the most force is
Tipping
Translation
Extrusion
Intrusion
A

translation

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8
Q 
The type of movement that requires the least force is
Extrusion
Intrusion
Rotation
Tipping
A

intrusion

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9
Q

The minimum amount of force application needed to have tooth movement is

A

4 hours

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10
Q

The mechanism of action of the bisphosphonates is to

A

Inhibit the osteoclast-mediated bone resorption`

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11
Q

The anchorage value is

A

roughly equal to its root surface

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12
Q

Which of the following is the least common side effect or orthodontic tooth movement
Root resorption
Tooth mobility
Devitilization of the moving tooth

A

Devitilization of the moving tooth

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13
Q

A tooth with periodontal disease can handle as much stress as the as tooth that is not involved with periodontal disease
True
False

A

false

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14
Q

Which of the following is a second order compensation:

  • Thickness of bracket
  • Adjustment of the faciolingual axial inclinations of the teeth
  • The preangulation of brackets in the mesial-distal direction
A

The preangulation of brackets in the mesial-distal direction

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15
Q

If the maxillary central incisor is 4 mm from the incisal edge. How many mm from the incisal edge should the canine be placed
a- 3
b- 3.5
c- 4.5

A

4.5

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16
Q

Which of the following is not a property of nickel titanium memory wires

  • Shape memory
  • Super elasticity
  • Exceptional Springiness
  • Good formability
A

good formability

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17
Q

What is the initial archwire used for the alignment/leveling stage

A

0.014 superelastic NiTi

18
Q

Class 3 elastics work by

  • Distalizing and extruding the 1st maxillary molars
  • Distalizing and intruding the 1st maxillary molars
  • Mesializing and intruding the 1st maxillary molars
  • Mesalizing and extruding the 1st maxillary molars?
A

Mesalizing and extruding the 1st maxillary molars?

19
Q

Correcting the rotation of an upper molar mesially around the lingual root improves a

A

mild class 2

20
Q

A patient with a class 3 molar relationship with mild to moderate severe crowding and mild/no skeletal discrepancy is solved with

  • Extracting 4 PMs
  • Extracting Upper 2nd PMs
A

answer not given

21
Q

A removable appliance can be used to prevent tooth movement by holding off the lips and cheeks and other soft tissues
True
False

A

true

22
Q

The most important reason a pano is taken after the end of stage 2 is to
Detect Supernumerary teeth
Detect 3rd incisor impactions
Determine the placement of the marginal ridges
Determine if tooth roots are parallel

A

determine if tooth roots are parallel

23
Q

Before the bond for an occlusal case is removed, the dentist should ensure that there is enough space remaining for an implant placement
True
False

A

true

24
Q

There is support that the idea that extracting third molars will prevent mandibular crowding
True
False

A

false

25
Q

Gingival fibers are reorganized within ______ months

A

3-4 months

26
Q

Supracrestal elastic fibers are reorganized within

_______ months

A

12 months

27
Q 
Which of the following is considered a permanent or semi-permanent need for retention
Anterior crowding
Anterior cross-bite
Generalized spacing
Class I Non-extraction cases
A

generalized spacing

28
Q

A lower lingual arch can be used as a space maintainer to ensure that molars do not move mesially. This can be done with protruding, crowded anterior teeth
True
False

A

false

29
Q

Which patients should be screened to see if they have orthodontic needs

  • Adolescents
  • Patients with crowded dentition
  • Everyone
A

everyone

30
Q

Multiple casts (retroclined posteriors / deep bite) also a clinical picture of a patient (#30-33)
This patient has a facial profile that is
Convex
Concave
Straight

A

convex

31
Q

Multiple casts (retroclined posteriors / deep bite) also a clinical picture of a patient (#30-33)

The patient is
Orthognathic
Prognathic
Retrognathic

A

retrognathic

32
Q

Multiple casts (retroclined posteriors / deep bite) also a clinical picture of a patient (#30-33)

The patient’s dental classification is likely
Class I
Class II, Division I
Class II, Division II
Class III
A

class II Div II

33
Q

Multiple casts (retroclined posteriors / deep bite) also a clinical picture of a patient (#30-33)

The FMA of this patient would most likely be
15
35
25

A

15

34
Q

A posterior cross bite is an example of a ________ problem
Transverse
Anterior-Posterior
Vertical

A

transverse

35
Q 
A patient with a Class 3 on the right side and a Class I on the left side
Class 3 Subleft
Class 3 Subright
Class 1 Subleft
Class 1 Subright
A

class 3 subright

36
Q

Which of the following is the 1st step in taking an impression
Wax bite registration
Pick out a tray
Mix Alginate

A

wax bite registration

37
Q

The Frankfort horizontal plane deals with the
Vertical development of the face
Horizontal development of the face

A

vertical development of the face

38
Q

The angle that relates the mandible to the cranial base is
SNA
-or-
SNB

A

SNB

39
Q

The bolton analysis is used to:

A

Determine the amount of space needed

40
Q

The maxillary incisors measure 28 mm. The mandibular incisors measure 22 mm. What is the width of the mandibular canines and premolars in the arch?

A

43 mm

Ortho Final Old Tests (1 decks)

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