A. Beverages such as tea, coffee or fruit juices and foods like curries can leave stains, which are not easy to remove by brushing. These stains develop slowly and become more visible as we grow older. Composite bonding may need repacing in the future, it is difficult to suggest how far off in the future because it depends on your diet and cleaning and whether you have a regular visit to your hygienist. Veneers on the other hand do not stain.