Bonding is a procedure in which a light-cured composite material is added to the surface of a tooth to change its shape, size or colour. The teeth may be lightly filed before bonding, or the material may be bonded directly onto the tooth. Composite comes in a wide range of shades so that it blends in with the colour of the natural tooth, and it has a slight translucency and a chameleon-like effect that helps it merge with the tooth. If we use bonding to mask the colour of a dead tooth, the composite may improve the tooth’s appearance considerably but may not hide its colour completely, because the material is slightly translucent and is usually applied in a thin layer. If we use bonding on a dead tooth to correct its shape without covering the whole tooth with material, the correction can blend in completely and be invisible.
This answer is for general information. Your own case needs an examination by an orthodontist.