Third Molars 2 Flashcards
what is included in the patients history
general appearance
presenting complaint
HPC
MH
DH
SH
what is included in the extra oral exam
TMJ
mouth opening
lymphadenopathy
facial asymmetry
MoM
what is included in the intra oral exam
soft tissue exam
dentition
M2M
eruption status of M3Ms
condition of remaining dentition
occlusion
oral hygiene
caries status
periodontal status
what do you use an OPT to determine
presence or absence of disease
anatomy of M3M
depth of impaction
orientation of impaction
working distance
follicular width
periodontal status
relationship or proximity of upper 8s to maxillary sinus and of lower 8s to IAN canal
what does superficially impacted mean
where crown of 8 is sat at the same level as crown of 7
what does deeply impacted mean
where crown of 8 is at the same level as the roots of the 7
what does moderately impacted mean
where crown of 8 is anywhere between the roots of 7 and crown of 7
what signs on a radiograph indicate that the 8 is close to the IAN canal
interruption of white lines of canal
darkening of root where crossed by canal
diversion of IAN canal
deflection of root
narrowing of IAN canal
narrowing of root
dark and bifid root
juxta apical area
what signs are associated with a significantly increased risk of nerve injury during third molar surgery
diversion of inferior dental canal
darkening of the root where crossed by the canal
interruption of the white lines of the canal
what is diversion of IAN canal
the canal bends to accommodate the third molar
what does a juxta apical area look like
well circumferential radiolucent area around the apex of the root, lamina dura is still intact and there is no pathology
what further imaging can be used if you suspect close relationship to the IAN canal
CBCT
periapicals
what way can an 8 be angled
vertical
mesial
distal
horizontal
transverse
aberrant
how do you measure angulation of an 8
in relation to the curve of spee
what does the depth of an 8 on a radiograph give you an idea of
how much bone is needed to be removed
