Dentoalveolar

Question 1

What is the definition of an impacted tooth?

Answer 1

Tooth that has ceased to erupt before emerging into its functional location or fails to erupt in an expected timeframe

Question 2

What is the etiology of an impacted tooth?

Answer 2

-Crowding
-Malpositioned 2nd molar
-Trauma
-Prior surgery in area (loss of eruptive force)
-Thick bone or dense ST
-Pathology (cysts, tumors)

Question 3

What are the most likely impacted teeth?

Answer 3

Mand 3rds
Max 3rds
Max canine
Mand Premolar
Mand canine
Max premolar
Max Central
Max lateral
Max 2nd molar

Question 4

What is etiology of impacted maxillary canines?

Answer 4

-Due to crowding from adjacent teeth and tortuous route to eruption (starts high in maxilla with crown oriented anterior and towards midline)

Question 5

How is position of maxillary canine determined?

Answer 5

-Clinical Exam: Palpate bulge

-Panorex: Horizontal=palatal (tooth looks big and out of focus)
Vertical=Labial

-SLOB: Move PA same way=lingual. move PA and opposite=buccal

Question 6

What is the open technique for canine exposure?

Answer 6

Apically repositioned flap.

-Best for labial impacted teeth
-Do not remove bone beyond CEJ
-Etch, bond, bracket/chain
-Flap sutured apically to allow attached tissue to erupt with crown of tooth

Question 7

What is the closed technique for canine exposure?

Answer 7

Full thickness flap

-Best for palatal impacted teeth
-Reflect flap
-Do not remove bone beyond CEJ. Can remove alveolar bone for path
-Etch, bond, bracket/chain
-Suture flap over tooth