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Occlusion 1 & 2

QuestionAnswer
Mesial Step mand. molars are more mesial than max.
Flush Terminal Plane mand. molars are even with max
Distal Step mand. molars are more distal than max
centric occlusion the relationship of teeth in opposite arches
centric relation the relationship of arches
intercuspation maximum interlocking of cusp
interdigitation maximum touching of max and mand.
horizontal overlap max over mand the whole arch
vertical overlap overlap of anterior teeth incisal 3rd
inter-arch malocclusions group of teeth from both arches will be involved
openbite lack of occlusion of ant. or post. teeth can be unilateral or bilateral more common in ant.
overjet measurement of anterior horizontal overlap
underjet horizontal distance of anterior teeth in crossbite
torsoversion rotated or twisted mesial or distal
labioversion or buccalversion tooth positioned more facial
lingoversion tooth positioned more lingual
supraversion above occlusal plane supererupted
infraversion below occlusal plane
drifted mesial could be from an extracted teeth
functional occlusion chewing,talking and swallowing associated with performance & contacts
functional contacts are normal contacts between max and mand teeth & momentary contacts
Parafunctional contacts abnormal contacts & occlusal habits & neuroses
Parafunctional divisions tooth to tooth tooth to hard objects tooth to oral tissues
pathological migration in the presence of disease
class I facial profile mesognathic
class II facial profile retrognathic
class III facial profile prognathic
class I molar relationship MB cusp of max 1st molar meets the buccal groove of mand 1st molar
Class II division 1 & 2 molar relationship buccal groove of Mand 1st molar interdigitates w/distal of MB cusp of max 1st molar
class III molar relationship buccal groove of mand 1st molar interdigitates w/ mesial of MB cusp of max 1st molar
class I canine relationship max canine meets mand canine & mand 1st molar
class II division 1 & 2 distal of mand canine is distal to the mesial of max canine
Class III distal oof mand canine is mesial to mesial of max canine
conditions of maloclusion Class III anterior crossbite, crowded mand occlusion, max & mand edge to edge occlusion
conditions of malocclusion Class II division 2 mand retruded 1 or more max incisors retruded, max laterals protrude, crowded max ant, deep overbite
conditions of maloclusion Class II division 1 mand retruded, max incisors protruded, short mand & upper lip, deep overbite, excessive overjet(+2mm), abnormal muscle function
conditions of maloclussion Class I malposition individual teeth or groups, crowded ant, protruded or retruded max incisors, ant, or post, crossbite, mesial drift
Created by: ZanNeshia
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