A Review on Various Reasons for Teeth Discolouration

Teeth discoloration is mainly a cosmetic problem that occurs when the enamel (the hard, outer surface of the tooth) or the dentine (the layer below the enamel) become discoloured or stained. The teeth can become discoloured by stains on the surface or by changes within the tooth.

Tooth stains can cause great embarrassment and keep people from smiling. So what causes tooth discoloration and how can you prevent it from happening to you? There are two types of tooth stains: extrinsic and intrinsic. Extrinsic stains are known as surface stains. These are caused when outside elements affect the surface of the tooth. Intrinsic stains result when the interior sections of the tooth have darkened due to various reasons.