A dental crown is a restorative treatment while veneers are cosmetic You will require a dental crown when your tooth has been damaged significantly or possibly after receiving root canal therapy. A crown is used to restrengthen the tooth so if your dentist deems that your tooth is too weak for a filling or for other means of repair then they will recommend a dental crown. Veneers will only be recommended for damaged teeth if the problems are cosmetic. For example if you have small chips at the very surface of your teeth then veneers may be right for you. Veneers can also conceal discolouration and other cosmetic imperfections.