Health indices Flashcards
What is an index?
indicator of a trend
Why do we need health indices?
to identify those in treatment need
identify priority groups
identify treatment changes
plan healthcare services
How do we classify molar relationshio?
Angles classification
What was angles classification based upon?
FPM would always erupt into a constant position
Which index do we use for incisor classification?
British Stanards Institute Classification
Which indices for ortho exist?
classification
Treatment need
Treatment success
Treatment complexity
What are examples of treatment need indices?
summers occlusal index
IOTN
WHat is an example of the treatment success?
Peer Assessment rating (PAR)
What us an example of a treatment complexity index?
ICON
WHat do health indices need to be?
quick reliable: used repeatedly Acceptable valid: measures what its supposed to cheap
What was the IOTN based upon?
a governement initiative to determine the effect of malocclusion on dental health and psychological well being
What are the two components of the IOTN?
DHC
AC
What does the DHC consider?
single most detrimental occlusal feature of the dental health
what scale is the DHC meaured in?
1-no need 2-slight need 3-moderate need 4-great need 5-very great need
What does the letter a in the IOTN correspond with?
overjet
What does the letter b in the IOTN correspond with?
reverse overjet
What does the letter c in the IOTN correspond with?
Ant/Post X bite
What does the letter d in the IOTN correspond with?
displaced teeth
What does the letter e in the IOTN correspond with?
Ant/Pos open bite
What does the letter f in the IOTN correspond with?
increased overbite
What does the letter g in the IOTN correspond with?
prenormal/post normal occlusion with no other anomalies
What does the letter h in the IOTN correspond with?
hypodontia
What does the letter l in the IOTN correspond with?
Post Lingual cross bite
What does the letter m in the IOTN correspond with?
reverse ovejet
What does the letter i in the IOTN correspond with?
impeded eruption of teeth except third molar
What does the letter p in the IOTN correspond with?
cleft lip and palate
What does the letter s in the IOTN correspond with?
submerged teeth
What does the letter t in the IOTN correspond with?
partially erupted teeth
What does the letter x in the IOTN correspond with?
supplemental teeth
What does the aesthetic component comprsise of?
10 point scale
What does the PAR index measure?
measures overall occlusal integrity
looks at occlusal outcome compared to the initial malocclusion
Can create a percentage PAR reduction
What is the pupose of ICON?
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
How is the ICON calculated?
IOTN and PAR
What is measured in ICON?
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
What are the cut off values for ICON?
easy 77
What must a patient score on IOTN to qualify for NHS treatment?
IOTN DHC 4/5
IOTON DHC 3 + AC >5
What are the limitations to using IOTN?
DHC evidence is incomplete
AC is subjective
doesent indicate treatment complexity
What are the limitations to PAR?
hypodontia cases-redistrbution of spaces doesnt score highly Ectopi canines )one v ectopic tooth doesnt core highly) orthognathic cases (facial improvement doesnt score highly)
When is the PAR index used in UK?
Assess overall quality of occlusal improvements of orthodontists or practices
