Restp Generation

Question 1

Did not recommend dentin etching
Relied on adhesion to smear layer
Weak bond strength

Answer 1

1960s and 1970s first and second generation

Question 2

Acid etching of dentin
Separate primer
Increased bond strength
Margin staining caused clinical failure over time

Answer 2

1980s third generation

Question 3

(One bottle each)
Acid etching of dentin
Separate primer
Increased bond strength
Margin staining caused clinical failure over time
“Hybrid” laer of dentin and collagen
Dentin seal
Concept of “wet bonding” introduced
Technique sensitivity

Answer 3

Early 1990s fourth generation

Question 4

Mobined primer and adhesive in one bottle
Maintain high bond strength
Unit-dose packaging introduced

Answer 4

Mid 1990s fifth generation

Question 5

Self etching primers
Reduced incidence of post-treatment sensitivity
Bond strength lower than fourth and fifth generation

Answer 5

Late 1990s and early 2000s sixth generation

Question 6

“All in one”
Combines etching, primmer and bonding
Single solution
Good bond strength and margin sealing

Answer 6

Late 2002 seventh generation

Question 7

Nano particles
Dual cure
“Self etching”

Answer 7

2010 - 8th generation