Your dentist can help decide if a new retainer is the right choice. If you’ve already had orthodontic treatment to get your perfect smile, then a retainer is a good way of protecting it. Retainers keep your teeth in place following orthodontic treatment and each retainer is custom made to fit around your teeth. On the other hand, if you’re looking to start treatment to realign or straighten your teeth, then you’re probably not yet ready for a retainer. Instead, consult an orthodontist about aligner. These can look very similar to retainers but are technically very different and sometimes used as part of a treatment program worked out with your dental professional. It is always advisable to consult your dental professional about your options.