Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

xD3 Ortho Exam 1 > Interceptive Treatment (Allen) > Flashcards

Interceptive Treatment (Allen) Flashcards

1
Q

What dentition is the patient in where the permanent teeth include central and lateral incisors, first molars and the child is 2-4 yrs away from full adult dentition?

A

Early mixed dentition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What dentition is the patient in where the primary teeth remaining are the primary second molars?

A

Late mixed dentition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the orthodontic treatment in the mixed dentition, knowing that a comprehensive treatment will be necessary later?

A

Phase I treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a minimal orthodontic appliance of 2 brackets / bands on molars and 4 brackets on incisors in the mixed dentition?

A

Two by Four

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What will be necessary post Phase I therapy?

A

Retention until phase 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When should oral habits be stopped to avoid orthodontics later?

A

Prior to eruption or permanent incisors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are 2 orthodontic results of unaddressed oral habit?

A
  1. Open bite

2. Maxillary constriction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When is crowding normal in the mandible?

A

Mixed dentition as permanent lower incisors replace their smaller primary incisors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why is the initial crowding the early mixed dentition not an immediate worry?

A

Because premolars are smaller than the primary molars they replace giving room for teeth to shift
Leeway space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Term for permanent lower incisors being larger than the primary incisor they replace?

A

Incisor liability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

This is crucial if the loss of a primary second molar in the early mixed dentition

A

Space maintenance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Is space maintenance a concern if there is early loss of the primary first molar and why?

A

No, because primary 2nd molars prevent mesial movement of permanent first molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is indicated in the late mixed dentition if there is anterior crowding or loss of primary 2nd molars for reasons other than eruption of 2nd premolar?

A

Lower lingual holding arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What holds the lower permanent first molars back to allow anterior crowding to be resolved posteriorly (move into the Leeway space)?

A

Lower lingual holding arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How much space can be gained with a lower lingual holding arch?

A

5mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Is anterior crowding in the early and late mixed dentition a local tooth issue normally or a whole arch issue?

A

Whole arch issue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Is Phase I treatment indicated to correct anterior crowding (e.g. should primary canines be extracted early to allow permanent incisors to drift into that space and align)?

A

No. Wait until the whole arch can be treated.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Should you take out primary teeth to align four permanent incisors?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is treatment if permanent incisor are blocked out i.e. have not erupted by age 6-7?

A

Make room for them via treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Why is treatment indicated for blocked out incisors but not indicated for crowded incisors?

A

Blocked out incisors run risk of never erupting impacting which will require more invasive procedure later

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

If a canine buccal bulge cannot be palpated in the vestibule between ages 9-11 what can be expected and should be confirmed radiographically?

A

Palatally impacted canines

22
Q

Is a palatally displaced canine caused by crowding?

A

No

23
Q

What is the percentage of palatally displaced canines that will erupt if left untreated?

A

36%

24
Q

What percentage of palatally displaced canines will have normal eruption if the primary canine is extracted?

A

65%

25
Q

What percentage of palatally displaced canines will have normal eruption if the primary canines are extracted and Headgear, or and an expander or a transverse palatal arch are placed in conjunction with the primary canine extraction?

A

85+%

26
Q

Class II patient can usually be treated well with what treatment: 2 stage or single stage

A

Single stage only (no early intervention indicate)

27
Q

Is there a correlation between the amount of over jet of the prevalence of trauma?

A

No

28
Q

If the patient has a partial anterior crossbite e.g. a maxillary tooth locked out behind a mandibular tooth, is treatment indicated immediately?

A

Yes must avoid gingival stripping and tooth wear

29
Q

If the patient has a complete anterior crossbite e.g. all maxillary anterior teeth are locked out behind mandibular teeth, is treatment indicated immediately?

A

Yes, if it is fixable

30
Q

How does one determine if the complete anterior crossbite if treatment early?

A

If the patient can bite end to end and is only functionally shifting into the crossbite

31
Q

When is a complete anterior crossbite not treated with early intervention?

A

When doing so would flare the maxillary teeth too far forward or mandibular teeth too far back and be unesthetic

32
Q

In normal growth, is overbite and over jet maintained through growth?

A

Yes

33
Q

In normal growth, what does the lower dentition do?

A

Mesialize

34
Q

In class III malocclusion growth, how long will the overbite and over jet be maintained?

A

Until skeletal discrepancy is too large to compensate

35
Q

What does the lower dentition do in the Class III growth?

A

Lower incisors tip back. Lower dentition DOES NOT mesialize.

36
Q

What intervention is indicated if the patient has an anterior crossbite and a class III skeletal appearance and the patient is 8 years old?

A

Protraction face mask (advances maxillae 2-3mm and brings teeth forward)

37
Q

What intervention is indicated if pt has an anterior crossbite and a class III skeletal appearance and pt is 10-12 yrs old?

A

Bone -anchored maxilla protraction (use miniscrew plates to advance maxilla up to 5mm)

38
Q

What intervention is indicated if pt has an anterior crossbite and a class III skeletal appearance and pt is 16-17 yr old female or 17-20+ male ?

A

Wait until pt completely done growing then deteremine treatment plan

39
Q

What is the maxillary advancement and mandibular growth decrease found in the early intervention method of bone anchored maxillary protraction for moderate age intervention?

A

+4mm maxilla

-2mm mandible

40
Q

Is early intervention indicated for complete posterior crossbite?

A

The belief on this is split between yes and no

41
Q

What is rationale for correcting a complete posterior crossbite in the early mixed dentition?

A

Easier to expand a younger patient.

Disadvantage is that the patient will require retention until Phase II

42
Q

What is rationale for waiting to correct a complete posterior crossbite until the late mixed dentition?

A

Most likely not any harder to expand an 11 yr old vs. a 9 yr old. The 11 yr old could be expanded and followed immediately with single stage orthodontics

43
Q

95% of unilateral crossbites are truly bilateral issues involving what?

A

Asymmetric functional shift to one side

44
Q

What is the character of a unilateral crossbite pt’s maxilla and mandible in relation to each other?

A

Both maxilla and mandible are symmetrically constricted

45
Q

What type of problem is a unilateral posterior crossbite?

A

Symmetrical problem

46
Q

Is early intervention indicated for a unilateral posterior crossbite?

A

Yes and retention will be necessary

47
Q

Is early intervention indicated for a patient with a deep bite?

A

No

48
Q

What is a normal maxillary diastema in the early mixed dentition that may correct itself when the canines erupt?

A

2mm or less

49
Q

What should be checked for if there is a maxillary diastema in the early mixed dentition that is greater than 2mm?

A

Mesiodens

50
Q

Will a >2mm maxillary diastema in the early mixed dentition close on its own?

A

No, early intervention is indicated

51
Q

What will be required for a corrected maxillary diastema in the early mixed dentition?

A

A fixed lingual retained on #8-#9

52
Q

What trumps everything when determining early intervention?

A

Psychosocial issues

xD3 Ortho Exam 1 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions