What is C factor in dental composites?

The cavity configuration or C-factor is defined as the ratio of the bonded to the unbonded surface area. 17. During light-induced polymerization of resin composite, the shrinkage forces in high C-factor cavities cannot be relieved by resin flow, resulting in the debonding of one or more walls.

What is MOD cavity?

METHODS: Mesio-occlusal-distal (MOD) cavities were prepared in 35 premolars and permanent molars with carbide bur.

What is dental composite composed of?

As with other composite materials, a dental composite typically consists of a resin-based oligomer matrix, such as a bisphenol A-glycidyl methacrylate (BISGMA), urethane dimethacrylate (UDMA) or semi-crystalline polyceram (PEX), and an inorganic filler such as silicon dioxide (silica).

What is the C factor in dental preparation?

C-factor In dentistry, the configuratio … In dentistry, the configuration factor (also known as c-factor) refers to the number of bonded to unbonded surfaces in a tooth preparation. For instance, in an occlusal class I preparation there would be 5 bonded surfaces and only 1 unbonded surface. The net result would be a C factor of 5.

What is the C factor of a cavity?

Cavity configuration factor (C-factor) is the ratio of the bonded surface area in a cavity to the unbonded surface area [ 2

What kind of composite is used in dental fillings?

Dental composite is a mixture of resins, or a combination of glass and plastics. It’s widely popular in dental procedures – including cavity filling, restoration, and cosmetic reshaping – because of its stability and safety.

What is the C factor in occlusal Class I?

For instance, in an occlusal class I preparation there would be 5 bonded surfaces and only 1 unbonded surface. The net result would be a C factor of 5. As the C factor increases so to does the possibility of bond disruption when using a composite resin.