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IODC - Orthodontics > Interceptive Ortho > Flashcards

Interceptive Ortho Flashcards

1
Q

Why is interception ideal and what is involved

A

Early identification and management of potential problems and early appliance of tx

Avoidance of a worse malocclusion

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2
Q

Different stages of orthodontic timetable?

A

Primary dentition
Early mixed dentition
Late mixed dentition
Permanent dentition

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3
Q

What are the 2 options of development for each stage?

A

Normal development = monitor

Problems = interception or tx

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4
Q

What are the possible problems in primary dentition?

A 
Delayed eruption
Missing teeth
Supernumerary teeth
Abnormal teeth
Crowding

SCAM’D

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5
Q

What to do in primary dentition for following problems: overjet, class III, cross bite, caries/trauma, habits

A

Overjet - prob be greater permanent dentition - no tx this stage

Class III - prob be present perm dentition
- no tx just observe

Crossbite - tend to persist

Caries/trauma - if trauma primary incisors possible ankylosed - look deflection perm successor

Habits - cause AOB, unilateral posterior cross bite - no intervention yet

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6
Q

What is the size discrepancy between primary and permanent incisors?

A

Upper arch 7mm greater
Lower arch 5mm greater
Permanent teeth more proclined

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7
Q

What problems would you see in early mixed dentition?

A 
Delayed eruption
Early loss - loss centre liners
First perm molars - if poor prog referent ortho opinion XLA
Median diastema
Increased overjet
Crowding
Anterior/posterior XB
Habits
Skeletal class

FOXED DCHB

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8
Q

What are the 3 different types of supernumerary teeth and how tx?

A

Erupted mesiodens - extract and align
Unerupted supernumerary - XLA supernumerary (see guidelines)
Supplemental - usually XLA most displaced or poorly formed

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9
Q

What can premature loss of primary canine cause?

A

Shift of centre line to XLA side

Need balance loss of primary canine in either arch

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10
Q

What can premature loss of primary first molar (D) cause?

A

In crowded case - shift of centre line to XLA side

Consider balancing

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11
Q

What can premature loss of second primary molar (E) cause?

A

Mesial movement first permanent molars
Space loss greater in upper arch
Don’t balance - disrupt occlusion

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12
Q

Should compensation in primary dentition?

A

No

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13
Q

What are space maintainers?

A

Can be fixed or removable
Pt often unsuitable
Must be fitted immediately

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14
Q

What tx options are available for impacted first molars?

A

Disimpact 6 or XLA E’s

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15
Q

Causes midline diastema?

A 
Normal
Supernumerary teeth
Generalised spacing
Proclined upper incisors - class II div I
Digit sucking
Trauma
Pathology (cyst)

PPSSNT

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16
Q

If crowding in mixed dentition - what would be indications for XLA?

A

Permit laterals to align
Allow incisors to be moved over bite
Potentially improve position of palatally displaced perm canines

17
Q

How to tx anterior XB in mixed dentition?

A

Tx early

Correct w/ 2x4 or URA

18
Q

How tx posterior XB in mixed dentition?

A

Consider early tx - look mandibular displacement on closure
Adams cribs 6s
Interceptive correction of posterior XB affecting 6s

19
Q

Tx of class III in early mixed dentition?

A

Some pt aged 8-10 are suitable for tx

20
Q

What are the problems in late mixed dentition?

A 
Missing teeth 
Infraoccluded teeth
Crowding 
Poor quality 6s 
Ectopic canines
Habits
Increased overjet

CHEMO IQ

21
Q

How to deal w/ missing teeth in late mixed dentition?

A

Monitor

Refer to hospital for tx planning - multi-disciplinary care

22
Q

How to deal w/ infra occluded teeth in late mixed dentition?

A

Monitor

XLA under LA

23
Q

How to deal w/ crowding in late mixed dentition?

A

Refer to ortho

24
Q

How to deal w/ poor quality 6s in late mixed dentition?

A

Refere to orthodontics for opinion re timing

25
Q

How to deal w/ ectopic canine in late mixed dentition?

A

Refer time diagnosis

Screen all 9 year olds - palpate/ radiograph

26
Q

How to deal w/ habits in late mixed dentition?

A

Best time to deal
Educate pt and advise to stop
Habit breaking appliance / passive removable appliance
If stop habit before 8 can get spontaneous correction occlusion

27
Q

What can digit sucking cause?

A

Proclined upper incisors, AOB, unilateral posterior XB, increased OJ

28
Q

What is Hyrake passive removable appliance?

A

Correction AOB in relation to habits

29
Q

How to deal w/ increased overjet in mixed dentition?

A

Refer to orthodontic - functional appliance best during growth spurt (11-13yrs)

30
Q

Problems w/ tx problems in permanent dentition?

A

Lack growth - slower tx
Co-operation
Difference expectations

IODC - Orthodontics (18 decks)

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