Surgical XLA

Question 1

What is a surgical XLA?

Answer 1

Raising a mucoperiosteal flap +/- using a drill to section a tooth/remove bone

Question 2

What is involved in the pre-op assessment?

Answer 2

Look in mouth
Check radiograph
- path of withdrawal of roots
- obstacles (intrinsic - tooth or extrinsic - surrounding bone)
- point of elevation
- bone removal
- flap design

Question 3

What are the 6 principles of flap design?

Answer 3

1. Surgical access - positioning and size
2. Broad base - blood supply and healing
3. Avoiding vital structure and healing (mental nerve in 4/5 region)
4. Incision over sound bone for healing
5. Full thickness flap - mucosal and periosteal layers together - healing
6. Intact papillae - healing (poor blood supply = shrinkage and black triangles)

Question 4

What are the types of flap?

Answer 4

Simple envelope flap
2 sided flap
3 sided flap

Question 5

Which burrs are used for bone removal?

Answer 5

Round
Tapered fissure cross cut