intro Flashcards
when would you preform an incision biopsy
lesion >1 cm
polymorphic
suspicious for malignancy
in area with high morbidity
when would you preform an excision biopsy
lesion < 1cm
vascular lesion
pigmented
t/f. in an excision biopsy, you only remove the lesion
false. you remove the lesion and perimeter of surrounding, uninvolved tissue
impacted tooth
tooth that fails to erupt into the dental arch within the expected time
what can potentially prevent a tooth from erupting
adjacent teeth, dense bone, excessive soft tissue
most commonly impacted teeth
mand 3rds M, max 3rd M, max canines
classification of angulation of impacted teeth
mesioangular (least difficult), horizontal, vertical, distoangular (most difficult)
what does the Pell and Gregory classification tell you
relationship to the ant border of the ramus and to the occlusal plane
class 1 P&G classification
normal position ant to the ramus
class 2 P&G classification
1/2 of crown is within ramus
class 3 P&G classification
entire crown is embedded within the ramus
class A P&G
tooth at same plane as other molars
class B P&G
occlusal plane of 3rd molar is between the occlusal plane and the cervical line of the 2nd molar
class 3 P&G
the 3rd molar is below the cervical line of the 2nd molar
unerupted teeth
impacted teeth and teeth that are in the process of erupting
embedded teeth
way to describe impacted teeth
primary reason teeth fail to erupt
inadequate arch length
t/f denser cortical bone has a higher implant success rate than loose, soft cancellous bone
true
where do you find type 1 bone
ant mand
where do you find type 2 bone
post mand
where do you find type 3 bone
ant max
where do you find type 4 bone
post max
autograft
autogenous bone form patient
allograft
cadaver bone
osteoconducive, but not osteoinducive
xenograft
genetically different species
bone morphogenic protein
induces bone formation and enhances graft healing
