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Restorative dental materials designed to be used as resin-based sealants for in situ restoration of the appearance, structure and/or function of a patient\'s teeth. These restorative dental materials typically consist of resins that do not contain any additional modifiers such as fillers, colorants, dispersants, plasticizers, wetting agents, levelers, or defoamers. Unfilled resin restorative dental materials can be light-cured supplied in a single-paste system that is polymerized in situ by the application of ultraviolet or visible light; they can also be self-cured supplied in a two-paste system polymerizing in a solid resin without the use of external heat. Unfilled resins are easy to manipulate and shape, and are usually placed in the occlusal surfaces of posterior teeth to seal their irregularities (i.e., pits and fissures) preventing the carious process. They are used in dentists\' offices.
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