A. The 6 months smile brace treatment depends on the severity of the case. For a full upper and lower case, expect to pay around £3000. For sectional braces, the price is decreased. veneers are almost like afalse fingernail that sits over the top of the tooth. if your teeth are crooked to start with, then the teeth would need to be prepared away more for the veneer to look in alignemnt with the others. If alot of tooth needs to be taken away, then you may need crowns. Ideally, if you are considering veneers and have crooked teeth, then braces to align your teeth first is the prefect option.