1.25.23 Jon Mazz_vertical sinus lift

Question 1

What arteries are in the sinus?
What innervates the sinus?

Answer 1

All branch from the Maxillary artery:
* posterior superior alveolar a.
* anterior superior alveolar a.
* infraorbital a.

Nerves all branch from V2:
* PSA
* MSA
* ASA

Question 2

How thick is the sinus membrane?
At what thickness is a sinus lift contraindicated?

Answer 2

Insua 2016
CBCT: 0.79 mm
Histology: 0.3 mm

If the membrane is ≥4 mm, refer to ENT since there may be pathology.

Question 3

How did Dr. Chan classify sinus floors?

Answer 3

Narrow:
* lower boundary <8mm
* Upper boundary: <14

Average:
* Lower 8-10
* Upper ?? [Add here]

Wide:
* Lower >10
* upper ?? [Add here]

Question 4

What are indications of vertical sinus augmentation? What are the complications and who first invented the technique?

Answer 4

Lundgren 2017
Maximum elevation is <3-4mm
Residual bone height should be ≥5mm

Sammartino
Vertigo in transcrestal sinus lift: ~3% prevalence

Summers 1994 - first published about the vertical lift via osteotome technique. But, it was actually invented by Tatum (?) in the Michigan group

According to Dr. Wang:
Perforation risk in vertical sinus lift: 9-10%

Question 5

When does the sinus augmentation condense? (during healing?)

Answer 5

Bragger: within the first year
Overgraft by ~2mm in height so that the condensation will not adversely affect the implant

Sonnata & Wang 2014
.1, .2, .3 CC lifts the membrane (?? not sure - double check this)
3.5, 5, 6