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Composite filling is a tooth coloured plastic and silica mixture which is now widely used a cosmetic restorative material. Due to its high aesthetics it is the material of choice for filling the front teeth. Though its main purpose is to restore the tooth it is also used to close mid line diastema, fractured teeth as well as to bond orthodontic brackets to teeth.
First the decay in the tooth will be removed with the help of a dental drill. Then cavity is prepared for composite to be placed. An etchant gel will be applied on the cavity for approximately thirty seconds so that the composite can grip the tooth better. The cavity will then be rinsed with water and dried. Then a bonding agent will be applied on the tooth and cured with the help of a laser or light. The bonding agent will bind the etched tooth surface with the composite. The composite is applied layer by layer and each layer has to be cured for approximately a minute and half. Finally after all the layers have been placed and cured the restoration will be cut and polished till it resembles a complete tooth.
One of the main disadvatages of Composite is its low strength and its characteristic of absorbing color. So care should be taken to avoid applying heavy forces on those restored teeth as well as to reduce intake of staining foods such as coffee, tea and habits such as smoking.
