Phillips Dental Materials Bonding

Question 1

What were characteristics of First Generation Dental Adhesives?

Answer 1

Silane coupling agents

High polymerization shrinkage and high coefficient of thermal expansion

Question 2

What were characteristics of Second Generation Dental Adhesives?

Answer 2

Attempt to deal with smear layer

Low bond strength

Question 3

What were characteristics of Third Generation Dental Adhesives?

Answer 3

Modification of the smear laer to improve its properties or

Removal of the smear layer without disturbing the plugs that occluded dental tubules

Question 4

What are the 4 steps for Third Generation Dental Adhesives?

Answer 4

1 Dentin Conditioner
2 Application of Primer (the bonding agent)
3 Application of Adhesive ( unfilled resin)
4 Placement of Resin Based Composite

Question 5

What are characteristics of Fourth Generation Dental Adhesives?

Answer 5

The use “total etch technique”phosphoric acid to etch dentin AND enamel
Gentle drying after etching and rinsing was critical–known as “wet-bonding”

Question 6

What are characteristics of Fifth Generation Dental Adhesives?

Answer 6

Micromechanical retentions
Combining either conditioner and primer= self etching primer
or
Combining primer and adhesive = slef priming adhesive

Question 7

What are 3 types of micromechanical retention used in Fifth Generation Dental Adhesives?

Answer 7

1 Penetration into partially opened dentinal tubules
2 formation of a hybrid layer in which hydrophilic monomers penetrate and polymerize to form an interpenetrating netweor
3 chemical interactions involving first and second- order bonds

Question 8

What are characteristics of Glass Ionomer Restoratives?

Answer 8

Fluorine Releasing
Chemical bonding to tooth structure
100% retention rates in Class V lesions without mechanical retention or enamel etching