Intro to OMFS Flashcards
What is an Incisional biopsy
it is when you biopsy a lesion by simply taking a slice out of the lesion, not removing the whole thing.
When is an incisional biopsy used
when lesions are: larger than 1 mm polymorphic suspicious for malignancy in an anatomical area with high morbidity
What is an Excisional biopsy
when the entire lesion is completely removed and a perimeter of surrounding tissue
When is an excisional biopsy used
when lesions are:
small (<1mm)
vascular
pigmented
What is an impacted tooth
one that fails to erupt into the dental arch within the expected time
What things can prevent a tooth from erupting and cause an impacted tooth
adjacent teeth, dense bone, excessive soft tissue
which teeth are most commonly impacted
3rd molars and maxillary canines
Rank the different types of angulation of impacted teeth from least to most difficult to treat
Mesioangular
Horizontal
Vertical
Distoangular
What is a Class 1 impacted tooth according to Pell and Gregory
A tooth in normal position anterior to the ramus
What is a Class 2 impacted tooth according to Pell and Gregory
A tooth with 1/2 of the crown embedded in the ramus
What is a Class 3 impacted tooth according to Pell and Gregory
a tooth with the entire crown embedded in the ramus
What is a Class A impacted tooth according to Pell and Gregory
a tooth on the same occlusal plane as the other molars
What is a Class B impacted tooth according to Pell and Gregory
a 3rd molar with its occlusal plane in between the occlusal plane and cervical line of the 2nd molar
What is a Class C impacted tooth according to Pell and Gregory
a 3rd molar with its occlusal plane below the cervical line of the 2nd molar
Are impacted teeth considered unerupted teeth
yes, unerupted teeth include impacted teeth and teeth that are in the process of erupting
