Many thanks for your e-mail, there are many teeth straightening products available through dental practices today, and the fact that you are 33 years old should have no bearing on the success rate of treatments. In relation to the comments about your teeth returning to their current position on completion of the treatment, this depends mainly on yourself. The reason for this, is that with most straightening treatments, you will be provided with a retainer on completion, and so the continuing success will depend on you wearing the retainer regularly (mainly overnight). In respect of the cost of treatment, these will vary from practice to practice, although I can advise you that the prices for straightening treatments at Kissdental start from £999. I hope this will be of assistance to you and wish you great success with your treatment. Kindest Regards. Dr Kailesh Solanki.