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Filling materials. Fillings
16-09-2009
The final stage of treatment of dental caries and its complications is filling. Sealing - a replacement of the defect of dental hard tissues special material for the restoration of anatomic form and function of the tooth.
The ideal filling material must have the following physicochemical requirements:
- Do not shrink;
- Provide the ideal marginal adaptation;
- Have a high adhesion in a wet environment;
- Have a coefficient of thermal expansion close to the coefficient of thermal expansion of the tooth;
- Have a hardness close to the hardness of enamel;
- Must be chemically resistant, that is not dissolve in the oral fluid;
- To resist abrasion;
- Do not have the abrasive properties, that is itself does not cause abrasion of antagonist;
- Curing time should be the maximum in time to form, seal.
Clinical requirements for sealing materials:
- Do not have a toxic effect on pulp tissue of oral cavity, the organism as a whole, possess anti-inflammatory and antiseptic effect;
- Low thermal conductivity;
- Good aesthetic properties;
- Do not change the color of the tooth;
- Be the color stability, that is not change color over time;
- Not cause the appearance of galvanic currents in the oral cavity;
- To be opaque.
The classification of filling materials.
All filling materials are divided into 5 groups:
1. For temporary seals (zinc sulfate cements, zinc-evgenolovye cements, cements polikarboksilatnye);
2. For permanent seals (cements, amalgams, composites);
3. For pads (medical, insulating, insulating varnishes);
4.Dlya filling of root canals (netverdeyuschie plastic, plastic harden, solid (pins);
5. Sealants (sealants).
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