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What is the purpose of a cavity liner?

Posted on August 26, 2022 by Author

What is the purpose of a cavity liner?

Dental cavity liners have historically been used to protect the pulp from the toxic effects of some dental restorative materials and to prevent the pain of thermal conductivity by placing an insulating layer between restorative material and the remaining tooth structure.

Why would the DDS place a liner in the cavity prep and what what materials would be used for this purpose?

The basic function of a liner is to adapt to the internal surfaces of a cavity preparation to create a level surface and compensate for irregularities and defects, which helps in the subsequent placement of the definitive restorative materials. It also helps improve the seal for pulpal protection.

What is a liner in dentistry?

A liner is defined as a material that is applied in a thin layer, usually 0.5 mm thick, to seal the dentin on the floor and walls of a cavity from the influx of bacteria or irritants from restorative materials and procedures.

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What is the purpose of cavity varnish?

cavity varnish n. A solution of natural or synthetic resin (e.g. *copal resin) in an organic solvent of acetone, ether, or chloroform (that vaporizes after placement), which can act like a liner; it is used to seal the dentinal tubules and help prevent microleakage.

Where are liners placed?

Liners are materials that are placed as a thin coating (usually 0.5 mm) on the surface of a cavity preparation. Although they provide a barrier to chemical irritants, they are not used for thermal insulation or to add bulk to a cavity preparation.

Where is dental liner placed?

Within the cavity preparation, where is a liner placed? Liner is placed only on the deepest dentin surface of the preparation.

Why are linings used under fillings?

Since the 19th century liners have often been placed in cavities in the teeth under the filling material. The liners are thought to protect the living pulp of the tooth from filling materials themselves and also from their potential to allow more heat or cold through than the natural tooth would.

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What are the objectives of cavity preparation?

Objectives: To create the best marginal seal possible between the restorative material and tooth structure; To afford a smooth marginal junction; To provide maximum strength of both the tooth and the restorative material at and near the margin.

What Is a liner material?

Lining fabric refers to a group of materials inserted into various garments, from skirts and shorts to dresses, jackets and coats. Such fabrics can be made of natural or synthetic fibers and range from sheer to opaque.

Where is varnish used in dentistry?

Sodium fluoride varnish is used to prevent caries development, arrest early enamel and even soft dentine caries through promotion of remineralization of carious tooth substance. It is also used to treat tooth hypersensitivity.

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