extra PP stuff Flashcards
most common tooth to be infra-occluded
LDs
uses of a URA
tooth tipping habit breaker space maintainer reduce OB expand arch retainer
class 2 div 1 soft tissue features
incompetent lips
lip trap
tongue thrust
presentation of an infra occluded tooth
no physiological mobility low in arch metallic percussive note no PDL radiographically external RR
effect of supernumeraries on permanent dentition
prevent/delayed eruption (impaction of permanent teeth) crowding failure to erupt traumatic eruption occlusal interference
clinical signs of impacted canines
delayed eruption asymmetrical eruption retained c loss of vitality or mobility of 2 discolouration of 2s distal tipping of 2 no palpation of 3
effect a prolonged digit sucking habit has on posterior dentition
thumb/finger held in mouth causes mandible to drop open and tongue held in lower position than normal
sucking action on cheeks then narrows the maxillary dentition and causes a CB
reasons for UE upper central incisor
supernumerary (tuberculate)
trauma to A
crowding
pathology - dentigerous cyst
signs of ‘good wear’ at URA review appt
pt arrives wearing URA pt can take in and out easily can speak with appliance in looks worn active component now passive signs of wear on palate teeth moved
OJ
labial of most prominent L incisor to labial of most prominent U incisor
2-4mm average
tx options for impacted FPM
observe attempt to disimpact - discing - separators - URA ext E if present
reasons for impacted FPM
eruption angle
ectopic crypt
E morphology
small maxilla
