The time required to correct any particular orthodontic problem varies with the severity of the problem. Average treatment time is about 24 months, but this can be misleading because your treatment time may be as little as 6 months to as much as 3 years. Every patient wants their treatment to be completed quickly (and so does every orthodontist!). Recently several appliance systems have claimed to treat patients faster, and of course this would be a welcome development. Unfortunately there are no peer reviewed studies which support these claims. Your best approach to getting good information about your case is to see an orthodontist for a consultation about your case.