1indications for composite resin
class 1-6
foundations or core buildups
sealants and preventive resin restoration
esthetic enhancement
luting cements
2CONTRAindications for composites
cannot isolate site
excess masticatory force
restoration extend to root surface
poor oral hygiene
high caries index
3advantages of composite
esthetics
conservative prep
bond to tooth structure
insulative
repairable
4disadvantages of composite
expensive
tech sensitive
time consuming
POLYMERIZATION SHRINKAGE
decreased wear resistance
5polymerization shrinkage can cause
secondary caries
marginal leakage
post-op sensitivity
6activator
source of energy, activates initiator
7initiator
forms free radicals to start polymerization