Avulsion Flashcards
What is the bottom line for avulsions?
Keep the PDL cells alive
What is a common complication after avlusions?
Replacement resorption
What is the recall for a reimplanted tooth?
Diagnose clinically 4-8 weeks
What is the radiographic schedule for reimplanted tooth?
6 months and 1 year
The extent of replacement resorption is directly related to what on the avulsed tooth?
Initial damage to root surface when avulsed
What happens when cementum comes in direct contact with bone?
Osteoclasts start remodeling and will replace cementum and root dentin with bone.
What prevents bone remodeling the root in health?
PDL cells and PDL space prevent replacement resorption
The thickness of the PDL (i.e., the number of PDL cells or PDL cell layers) is dependent on what?
Maturity of the tooth
A tooth with an open apex and incomplete root development will have a thin or a thick layer of PDL cells?
Thin layer
A closed apex with complete root development will have a thin or thick layer of PDL cells?
Thick layer
What increases the risk of replacement resorption on a young permanent tooth that has been avulsed?
Dry time. Thin PDL cell layer will die.
In which tooth type, closed apex vs open apex, is replacement resorption less likely and less aggressive and why?
Closed apex. Has thicker PDL cell layer allowing for inner PDL cell layers to stay alive.
Replacement resorption is more aggressive in which age patient: young or old? Why?
Young. Have a higher turnover rate of bone.
Which extraoral dry time increases the rapidity of replacement resorption: short or long extraoral dry time?
Long extraoral dry time
This results in a tooth anchored in position, with disturbed normal growth of the alveolar process, resulting in a decreased height of the alveolar process, infraocclusion of the affected tooth, and migration and malocculsion of the adjacent and opposing teeth?
Ankylosis
