Impacted Teeth Flashcards
When is a tooth considered impacted?
Root more than 3/4 completed and not erupted
Other than 3rd molars, which teeth are the most often impacted?
Maxillary Canines
mand premolars, mand canine, max premolars
What is the incidence of maxillary canine impaction?
Around 2%
T/F: The majority of maxillary canine impactions are palatally impacted.
True
66-85%
What is often the cause for buccally impacted canines?
Arch length deficiencies
T/F: Most patients with impacted canines have bilateral impactions.
False
8%
What are some local obstacles leading to tooth impaction?
- Failure of primary roots to absorb
- Abnormal position
- Supernumerary tooth
- Crowding
- Soft or hard tissue pathology
- Cysts and thickened soft tissues
- Premature extraction
Are there any systemic factors that can disrupt eruption?
Yes
Childhood diseases, hereditary factors, genetic syndromes
What are some possible site effects of the impacted tooth?
- Malposition of tooth
- Migration of neighboring teeth
- Internal or external resorption
- Cyst formation
- Referred pain
What are the goals of surgery when treating impacted teeth?
- Provide optimal conditions for normal eruption
- Remove pathology
- Provide access for ortho appliances
When is surgery typically done?
Most common - ortho opens some space -> surgery -> apply ortho appliance to uncovered tooth
Sometimes surgery at the beginning
When is the window technique usually utilized?
When the tooth is deep palatally away from other dentition
When is the regular closed flap technique used?
When the impacted tooth is close to the normal dentition
*much better healing and less discomfort
