absolute anchorage is an orthodontic concept where the “anchor” does not move while other teeth are moved. In plain terms, it means holding some teeth (or the jawbone) very steady so treatment can move other teeth more predictably. It is commonly discussed in braces and clear aligner planning when large or difficult tooth movements are needed. In modern orthodontics, it is often approached using skeletal anchorage devices such as temporary anchorage devices (TADs).

anchorage is the planned resistance to unwanted tooth movement during orthodontic treatment. It helps keep certain teeth (or the jaw) stable while other teeth are moved into a new position. It is commonly discussed with braces, clear aligners, space closure, and bite correction. anchorage can come from teeth, appliances, or temporary devices placed by a clinician.

A retention protocol is a step-by-step method used to help a dental material stay attached to a tooth or existing restoration. It is most commonly discussed in adhesive dentistry, where resins (bonding agents and composites) are bonded to enamel and dentin. It typically includes isolation, surface preparation, bonding, placement of a restorative material, curing with a light, and finishing. The exact steps vary by clinician and case, and by material and manufacturer.

relapse means a condition returns after it seemed to improve or resolve. In dentistry, relapse commonly describes teeth shifting after orthodontic treatment or disease returning after therapy. Clinicians also use relapse to describe recurring inflammation, reinfection, or repeat breakdown of a dental repair. It is a clinical term used in charting, follow-up planning, and patient communication.

The retention phase is the period after active orthodontic treatment (like braces or clear aligners) when teeth are kept in their corrected positions. It commonly involves wearing a retainer or having a fixed (bonded) retainer placed behind the teeth. The plain goal is “holding the result” while the mouth adjusts to the new tooth positions. It is widely used in orthodontics and can be tailored to the tooth movements and bite changes achieved.

A bonded retainer is a fixed orthodontic retainer that is attached to the teeth with dental bonding material. It is most commonly a thin wire or fiber strip bonded to the back (tongue-side) surfaces of front teeth. Its main role is to help maintain tooth alignment after orthodontic treatment. It is often used on the lower front teeth and sometimes on the upper front teeth.

A fixed retainer is a thin stabilizing wire or fiber strip that is bonded to the back (tongue-side) surfaces of the teeth. It is most commonly used after orthodontic treatment to help teeth stay in their corrected positions. Unlike removable retainers, it stays in place continuously and works without patient insertion or removal. It is typically placed on the lower front teeth and sometimes on the upper front teeth.

An Essix retainer is a clear, thin, removable dental appliance made from a thermoformed plastic sheet. It is designed to fit closely over the teeth, similar in appearance to a clear aligner. Essix retainer is commonly used after orthodontic treatment to help maintain tooth position. It may also be used in short-term situations where a protective or holding appliance is needed.

A Hawley retainer is a removable orthodontic retainer made from an acrylic base and metal wires. It is commonly used after braces or clear aligner treatment to help maintain tooth position. Patients usually wear it on the upper arch, lower arch, or both, depending on the case. Dental teams value it because it can be adjusted and repaired in ways some clear retainers cannot.

A removable retainer is a dental appliance that can be taken in and out of the mouth to help maintain tooth position after orthodontic treatment. It is commonly used after braces or clear aligner therapy to support long-term stability. Most designs are custom-made from an impression or digital scan of the teeth. It is worn according to a clinician’s schedule, which varies by clinician and case.