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Orthodontics > Health indices > Flashcards

Health indices Flashcards

1
Q

What is an index?

A

indicator of a trend

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2
Q

Why do we need health indices?

A

to identify those in treatment need
identify priority groups
identify treatment changes
plan healthcare services

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3
Q

How do we classify molar relationshio?

A

Angles classification

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4
Q

What was angles classification based upon?

A

FPM would always erupt into a constant position

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5
Q

Which index do we use for incisor classification?

A

British Stanards Institute Classification

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6
Q

Which indices for ortho exist?

A

classification
Treatment need
Treatment success
Treatment complexity

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7
Q

What are examples of treatment need indices?

A

summers occlusal index

IOTN

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8
Q

WHat is an example of the treatment success?

A

Peer Assessment rating (PAR)

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9
Q

What us an example of a treatment complexity index?

A

ICON

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10
Q

WHat do health indices need to be?

A 
quick
reliable: used repeatedly
Acceptable
valid: measures what its supposed to
cheap
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11
Q

What was the IOTN based upon?

A

a governement initiative to determine the effect of malocclusion on dental health and psychological well being

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12
Q

What are the two components of the IOTN?

A

DHC

AC

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13
Q

What does the DHC consider?

A

single most detrimental occlusal feature of the dental health

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14
Q

what scale is the DHC meaured in?

A 
1-no need
2-slight need
3-moderate need
4-great need
5-very great need
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15
Q

What does the letter a in the IOTN correspond with?

A

overjet

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16
Q

What does the letter b in the IOTN correspond with?

A

reverse overjet

17
Q

What does the letter c in the IOTN correspond with?

A

Ant/Post X bite

18
Q

What does the letter d in the IOTN correspond with?

A

displaced teeth

19
Q

What does the letter e in the IOTN correspond with?

A

Ant/Pos open bite

20
Q

What does the letter f in the IOTN correspond with?

A

increased overbite

21
Q

What does the letter g in the IOTN correspond with?

A

prenormal/post normal occlusion with no other anomalies

22
Q

What does the letter h in the IOTN correspond with?

A

hypodontia

23
Q

What does the letter l in the IOTN correspond with?

A

Post Lingual cross bite

24
Q

What does the letter m in the IOTN correspond with?

A

reverse ovejet

25
Q

What does the letter i in the IOTN correspond with?

A

impeded eruption of teeth except third molar

26
Q

What does the letter p in the IOTN correspond with?

A

cleft lip and palate

27
Q

What does the letter s in the IOTN correspond with?

A

submerged teeth

28
Q

What does the letter t in the IOTN correspond with?

A

partially erupted teeth

29
Q

What does the letter x in the IOTN correspond with?

A

supplemental teeth

30
Q

What does the aesthetic component comprsise of?

A

10 point scale

31
Q

What does the PAR index measure?

A

measures overall occlusal integrity
looks at occlusal outcome compared to the initial malocclusion
Can create a percentage PAR reduction

32
Q

What is the pupose of ICON?

A

to identify those cases which will take longer
decide who should treat these cases
inform the patient on the success of the treatment
allow treatment outcome to be assessed more meaninfully

33
Q

How is the ICON calculated?

A

IOTN and PAR

34
Q

What is measured in ICON?

A 
AVPUB
Aesthetic component (IOTN) x7
Vertical relationships (PAR) x4
Presence of x bite x5
upper arch crowding/spacing x5
Buccal segment AP relationship (PAR) x3
35
Q

What are the cut off values for ICON?

A

easy 77

36
Q

What must a patient score on IOTN to qualify for NHS treatment?

A

IOTN DHC 4/5

IOTON DHC 3 + AC >5

37
Q

What are the limitations to using IOTN?

A

DHC evidence is incomplete
AC is subjective
doesent indicate treatment complexity

38
Q

What are the limitations to PAR?

A 
hypodontia cases-redistrbution of spaces doesnt score highly
Ectopi canines )one v ectopic tooth doesnt core highly)
orthognathic cases (facial improvement doesnt score highly)
39
Q

When is the PAR index used in UK?

A

Assess overall quality of occlusal improvements of orthodontists or practices

Orthodontics (28 decks)

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