Orthodontic Assessment Flashcards
Prognathism
protrusion of jaw (upper or lower) out of facial plane
Hypoplasia
incomplete/ underdevelopment of organ or tissue
orthognathic surgery
jaw surgery
how many live births do cleft lips and palates affect
1 in 700
functions of removable appliances
tip teeth , open bites and maintain space
function of functional appliances
modify jaw growth
function of fixed appliances
allow 3D control of tooth positioning
Risks assosciated with orthodontics
decalcification , replapse, root resorption , pain , soft tissue trauma
when should a brief and comprehensive orthodontic examination be carried out in children
Age 9 a brief examination to identify anything abnormal
Age 11/12 when canines and pre molars have erupted an comprehensive examination should be carried out
what are the 6 (7) keys to an ideal occlusion
I: molar relationship - upper 6 mesial cusp should be in groove of lower 6
II: crown angulation
III: crown inclination
IV: no rotation
V: no spaces
VI: flat occlusal planes (no curve of spee)
VII: correct teeth size
why cant patients scheduled to get MRIs get braces
risk to patient and MRI machine due to magnetics
name 2 bad habits that may see proclined upper teeth
digit sucking
sucking lip
name a bad habit that may result in an anterior open bite
tongue thrusting
name a bad habit that may result in resoprtion of upper roots
chewing/ biting nails
lip trap
upper teeth rest on lower lip
competent lips
meet at rest
how far in front of mandible does maxilla have to be for it to be considered a class II occlusion
more than 3mm
