When braces are removed, the teeth can quickly move back into crooked positions (relapse). Also, as you get older, your jaws continue to grow and the teeth become more crooked as part of the normal ageing process.
Nothing in the human body is stable and changes occur constantly. The teeth need to be held in their new straight position while the gums and jaw bone ‘firm up’. This is achieved by using retainers.
By wearing retainers long-term we can reduce these age changes in the position of the teeth. The longer you wear retainers, the longer you can keep your teeth straight.
Retainers are fitted at the end of orthodontic treatment after the braces are removed. They are either removable or fixed onto the teeth. There are different types of retainers.
Vacuum-formed retainers
This is a clear retainer that is usually worn on a part-time basis. You must never eat or drink with the retainer in place. They are lightweight, transparent and removable. They are made with vacuum formed soft acrylic and are moulded to each individual tooth. There is a reduced amount of material in the mouth making speech easier.
Bonded retainers
This is a fixed type of retainer with a thin wire bonded behind the teeth. The advantage is tooth movement is less likely with this type of retainer because it is permanently fixed to the teeth and therefore no reliance on remembering to wear them is required. The intention is for them to remain fixed permanently. However, you must spend extra time cleaning around it and if it ever gets loose, you should seek advice.
Hawley retainers
They are removable retainers that fit over the teeth and are good durable retainers that will last if looked after properly. This is a strong retainer that has a plastic part that fits either behind your lower teeth or in your palate behind the upper teeth. There is also usually a thin metal wire running across your front teeth to keep them in position. This retainer may affect your speech slightly when you first use it, but this quickly improves with time.
All retainers need to be cared for in their own special way. If the correct care is neglected retainers may get damaged or lost and there would be a fee for a repair or replacement.