Root Resorption

Question 1

main post-trauma complications

Answer 1

1. pulp necrosis and infection
2. pulp canal obliteration
3. root resorption
4. breakdown of marginal gingiva and bone

Question 2

pulp canal obliteration

Answer 2

response of a vital pulp, progressive hard tissue formation within cavity

gradual narrowing of pulp chamber and canal, total or partial obliteration

Question 3

external root resorption types

Answer 3

surface
external infection related IRR (external inflammtory resorption)
cervical
ankylosis RR

Question 4

what is external infection related IRR

Answer 4

response to trauma, non-vital, loss of PDL, potentially pulp

diagnosis = indistinct root surface, root canal tramlines intact

management = remove stimulus, endo

cervical resorption

Question 5

what is ankylosis related RR

Answer 5

fusion between dentine or cementum of root and surrounding bone, obliteration of PDL

normal repair does not occur

cause = severe luxation or avulsion

diagnosis = ragged root outline, no obvious PDL space

plan for loss

Question 6

internal root resorption type

Answer 6

internal infection related IRR

Question 7

what is internal infection IRR

Answer 7

due to progressive pulp necrosis
initiated in pulp space with loss of dentine

cause - pulpal infection, PDL infection, ortho pressure, impacted tooth

diagnosis = symmetrical expansion of RC walls ‘ballooning’, tramlines of root canal indistinct, root surface intact

tx - remove stimulus, endo, plan for loss