Root resorption

Question 1

Root Resorption

Answer 1

non- bacterial destruction of dental hard and soft tissue due to interaction of clastic cells

Question 2

Key features of cells

Answer 2

• very motile
• ruffled boarder (resorbing hard tissue)
• in contact with dentine

Question 3

RANKL Stimulation

Answer 3

• RANKL stimulate/ promotes development
• OPG inhibits RANKL and hence inhibits development

1. Parathyroid hormone, B3 and interleukin-1B
2. bacterial lipopolysaccharides
3. trauma
4. chronic inflammation

Question 4

Surfaces Involved to prevent RR

Answer 4

• PDL
• Cementum (non-mineralised layer)
• Predentine (non-collagenous)

when any damage is done to those, resorption process begin

Question 5

Classification of RR

Answer 5

Internal
- inflammatory
- replacement

External
- inflammatory
- replacement
- cervical
- surface