Nanotechnology Flashcards
What are the important factors that affect osseointegration?
Quality and condition of bone Other health conditions Skill of surgeon Local biological conditions including bacteria Gross design of implant Implant surface
What is osseointegration?
A direct functional contact is made between the implant and new bone
T/f cells can respond to the physical features on a surface?
T
Which two way can cells response to implant surfaces?
They can bridge or they can conform
Which features about the implant surface will dictate how the cell responds to the implant?
The size of the surface modification
How can the surface of implants be modified?
Mechanically
Chemically
How does mechanical surface modifition work?
Increased surface area for the cells and the possibility of creating mechanical interlocks
What type or surface roughness, moderate, mild or severe shows best type of osseointegration?
Moderate
How do the cells respond to the surface of a moderately rough implant?
Via biomechanical bonding
T\f. Surface that are easily wetted have better advances in terms of osseointegration?
T
What features are we not sure the effect on osseointegration ?
Nanoscale roughness
Optimum surface topography
How to balance the roughness needed for osseointegration and potential for bacterial colonisation
What do nano composites contain?
Particles of nano scale
1-100nm
What is the biggest advantage of nano composite?
Aesthetics
What is CPP-ACP?
A layer of protein is deposited on a tooth and acts as A delivery vehicle for calcium and phosphate
What size particles does CPP-ACP contain?
1.5nm
