Interceptive Orthodontics Flashcards
what is interceptive orthodontics
any procedure which reduces or eliminates chances of developing a malocclusion
when do you use growth modification
for underlying skeletal pattern
what do you check for if a patient has unilteral crossbite
displacement on closing
why would the cause of a patient displacing on closing be
issue with dental aetiology
what are the causes of posterior crossbites
teeth in upper arch tipped
upper arch narrow compared to lower
what does the presence of AOB and unilateral crossbite represent
digit sucking habit
if the digit sucking habit persists what happens to the teeth and why
teeth tip
forces from tongue, masseter and negative force in oral cavity
name some habit breaking appliances
goal post URA
fixed bands on molars and wire on palate called tongue rake
if a habit breaking URA is worn constantly how long will it take to break habit
4-8wks
why do we want to quit habits early
eruption of permanent incisors
skeletal vertical discrepancy persists into adulthood if keep sucking
what are the causes of AOB
tongue thrust
thumb sucking
skeletal position
upper and lower incisors only partly erupted
if a patient is missing the permanent tooth what do you check for
palpate
check percussion note and mobility of primary
what is a balancing extraction
opposite side of same arch
what is a compensating extraction
opposing tooth on opposite arch
do we balance 6s
no
when do we compensate for 6s
when taking lower 6 and you think upper 6 will be unopposed for long time
why does the space close quickly if you extract upper 6
angulation that the 7 is erupting at
when is the favourable time to extract 6s
bifurcation of lower 7s calcifying
angulation of 7 is mesial
presence of 8
what age do the signs of favourable extraction of a 6 appear at
8
when do you balance a deciduous tooth
lose c
patient crowded and lose d
if you lose an E early what is a good idea
placing space maintainer
why do you need to treat infraoccluded teeth
adjacent teeth will tip and you wont be able to remove it easily
if a tooth is infraoccluded and there is no permanent successor what do you do
urgent referral for hypodontia to paeds/ortho
what are the consequences of anterior crossbites
gingival recession labial to anterior incisor
mobility in teeth
displacement on closing
what do you use to treat anterior crossbite
URA with posterior bite plane
then use z spring to move tooth
what is the cause of impacted 6s
manifestation of crowding
what can you do if the mesial cusp of the 6 is impacted under the distal of the E
place separator for a week
or distalise 6 with URA
what are the causes of midline diastema
hypodontia
generalised spacing
low hanging fraenum
laterals impinging on central roots
unerupted supernumerary tooth
