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1. CONTENTS
1. DEFNITIONS
2. HISTORY
3. INDICATIONS
4. CONTRAINDICATIONS
5. ADVANTAGES
6. DISADVANTAGES
7. COMPOSITION
8. POLYMERIZATION
9. CLASSIFICATION
10. IDEAL REQUIEMENTS
11. PROPERTIES
12. CURING TECHNIQUES
13. CURING LAMPS
14. CONCLUSION

2. INTRODUCTION
Dental amalgam has been restorative material of choice for many
decades how ever, in recent years, there has been increasing awareness about
the safety of dental amalgam, mainly in respect to possible mercury toxicity
that may affect human health and the environment and people are more
conscious about esthetics.
As we know greatest assets a person can have is a smile that shows
beautiful natural or naturally appearing teeth. When teeth are discolored,
malformed, fractured there is often a conscious effort to avoid smiling.
These concerns have helped the dental profession to focus on the need
to develop alternative restorative materials that esthetically and with out
hazardous effects of Hg can restore the tooth back to form, function and
esthetics. There are 5 tooth colored restorative materials
 Silicate cements
 Unfilled resin
 Filled resin
 Alumino silicate polyacrylate cement
 Porcelain

3. Dental composites have been considered acceptable restorative
material for anterior, application for many years. Their improved mechanical
properties, tooth color matching ability and lack of metallic mercury have
caused them to be promoted as an adjunct to or substitute for dental
amalgam in the restoration of posteriors.
DEFNITIONS
The term composite refers to a three dimensional combination of at
least 2 chemically different materials with a distinct interface separating the
components.
According to Anusavice: Composite material may be defined as a
compound of 2 or more distinctly different materials with properties that are
superior or intermediate to those of the individual constituents.
According to Oxford dictionary a composite is a materials that is
made up of several parts.
HISTORY
Silicates were the first translucent material available .this cement was

4. introduces by Fletcher in 1878 in England. This cement was extensively
used to restore carious lesion in the anterior teeth for more than 60 years.
Because of the high fluoride content, the adjacent enamel was thought to
render more resistant to recurrent caries. These cement were more
susceptible to caries and they were easily detected because of their
discoloration and loss of contour.
Self curing acrylic resins for anterior restorations