5- Dental Cements And Adhesives Flashcards
1
Q
Cementing
A
Umbrella term for two materials joining together
2
Q
Luting
A
No adhesive interaction between surfaces
Only fills gap
3
Q
Bonding
A
True adhesion between 2 joining materials
Can be chemical or mechanical
4
Q
Advantages of GIC
A
Good F release Low exothermic rx Less shrinkage than resins (have similar coefficient of thermal expansion at dentin)/ No free monomers Dimensional stability Chemical and mechanical bonding between tooth and restoration Resistant to micro leakage Non-irritating to pulp
5
Q
Disadvantages of GIC
A
Susceptible to dehydration Sensitive to moisture at placement Less tensile strength than resins Poor acid resistance Poor abrasion resistance Low esthetic and colour stability
6
Q
Advantages of RMGI
A
More matrix= stronger
Less soluble- not degraded by saliva
7
Q
Characteristics of Light Cure
A
Increase working time- Excess removal is easier
Incomplete polymerization
8
Q
Characteristics of Self Cure
A
Increased curing time
Weak adhesion during first hour
9
Q
Characteristics of Dual Cure
A
Reduced working time
Colour instability
Correct and definitive monomer conversion
