Everything you need to know about retainers

A retainer is an appliance worn after orthodontic treatment to hold teeth in their new position. Without retention, teeth naturally tend to shift back over time.

The main types are fixed (bonded) retainers, which are glued behind the teeth and permanent, and removable retainers, including Essix (clear plastic) and Hawley (acrylic and wire) designs.

Removable retainer costs typically range from £50 to £200 per arch. Fixed retainers can range from £150 to £350 per arch. Costs vary by provider and whether retainers are included in the original treatment fee.

Most clinicians recommend wearing retainers long-term, often indefinitely. Initially full-time wear is typical, progressing to nights only after the first few months. Stopping too soon risks unwanted tooth movement.

This varies by provider. Some practices include retainers in the treatment fee; others charge separately. Always ask before starting orthodontic treatment.

A fixed (bonded) retainer is a thin wire glued permanently to the back surface of the front teeth. It requires no daily removal and provides continuous retention, but needs regular checking and careful cleaning.

Removable retainers should generally be taken out to eat and drink (except plain water). Fixed retainers stay in permanently, but certain sticky or hard foods should still be avoided to protect the wire and bonding.

Teeth will typically shift back toward their pre-treatment position if retention is stopped, particularly in the first year after treatment. Some degree of relapse is possible even after years of successful retention.

Removable retainers should be cleaned daily with a soft toothbrush and cool water or a retainer cleaning solution. Avoid hot water as it can warp the plastic. Fixed retainers need flossing with a floss threader or interdental brushes.

Yes. Retention is required after all forms of orthodontic treatment, including clear aligners. Your clinician should discuss the retention plan before treatment starts.

An Essix retainer is a clear, removable plastic retainer that fits snugly over the teeth. It is the most common type used after aligner and brace treatment.

A Hawley retainer is an older design made from acrylic and metal wire. It is more durable than Essix retainers and can be adjusted, but is more visible when worn.