Tooth-colored materials, like composite materials, do not need to be pressed. Composite dental fillings are placed in layers on the teeth and have a very short solidification time. Some of their types release fluoride. It is attached to the tooth through bonding systems. Its disadvantages are continuous polymerization and a high coefficient of thermal expansion, which is not conducive to microleakage, bacterial penetration, discoloration, and tooth decay.
Delayed hardening of this material leads to the absorption of moisture and increases the possibility of its separation from the tooth in the long term. Also, composite restorations require more technical sensitivity and require complete isolation of the teeth. Saliva, blood, and moisture prevent the composite from adhering properly to the teeth. For this reason, this material is not used in areas adjacent to the gums where the tooth cannot be isolated. There is also the potential for long-term restoration to discolour, which can be prevented by periodic polishing.
