The tooth become weak enough when it starts decaying and the resulting cavity need to be filled immediately so as to prevent the decay and to get back the optimal chewing function. Different types of materials are used to create fillings. Fillings are considered to be the ultimate treatment for tooth decay and also to restore the damaged tooth. Today cosmetic fillings are executed by dentists both for aesthetic reasons and for better oral health. Cosmetic filling is a type do dental procedure where a material like composite white filling or silver amalgam is used so that the decayed tooth can be treated. This material is inserted into the tooth by dentists so as to prevent the decay from spreading and to repair the damages.