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Removable functional appliances

Andresen Appliance

Bionator. Bionators initially look like a sort of combined upper and lower Hawley retainer, but do not fasten to the teeth and are not used for post-brace removal treatment. Bionators are held in the mouth within the space that the teeth surround when biting. They are used to expand the palate and create space for incoming teeth.

Biobloc. Biobloc is an appliance used to posture forward the lower jaw.

Clark Twin Block. This appliance incorporates the use of upper and lower bite blocks to position the mandible forward for skeletal Class II correction. The appliance was first developed by Scottish Orthodontist William Clark and Orthodontic Technician James Watt in 1977. The Twin Block has become the most popular functional appliance in use in the United Kingdom and is gaining popularity across Europe and the USA.

Bass Dynamax. This appliance is similar in principle to the Twin Block. It is based around a prefabricated modular spring, built into a maxillary (upper)occlusal splint. Two integral vertical springs make contact with a fixed lingual arch or removable lower appliance to posture the mandible (lower jaw) forward for skeletal Class II correction. This appliance was developed by London Orthodontist Neville Bass in the early twenty-first century.

Medium Opening Activator

Orthodontic Headgear. This is a type of appliance attached to dental braces that aids in correcting more severe bite problems.
Fixed functional appliances

Herbst Appliance
Fixed Twin Block Appliance

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