Functional Appliances at Esher Orthodontics

Functional Appliances- such as the Twin Block - are commonly used to reduce the projection of front teeth in growing patients. Thy can be either removable or fixed and can be effective in straightening teeth and promoting jaw growth.

Functional Appliances

What is a Twin Block Brace?

A Twin Block brace is a type of functional appliance used in orthodontics to treat patients who have a protruding jaw or misaligned teeth. This type of brace is designed to encourage the growth of the lower jaw while simultaneously moving the upper jaw back.

The Twin Block appliance is comprised of two removable braces that work together to position the lower jaw in a forward and closed position. By doing so, the two blocks engage and work to straighten the teeth and improve the overall alignment of the jaw.

How Does the Twin Block Brace Work?

The Twin Block brace works by using a two-phase process to promote jaw growth and straighten teeth. During the first phase of treatment, the upper and lower blocks of the appliance work together to posture the lower jaw forward and close the bite. This forces the muscles around the jaw to work harder, which can promote the growth of the lower jaw.

In the second phase of treatment, the lower jaw is positioned in a more favourable position, which allows the upper jaw to move back into its correct position. The result is a better-aligned bite, straighter teeth, and improved facial aesthetics.

What Are the Advantages of Using a Twin Block Brace?

There are several advantages to using a Twin Block brace as a form of orthodontic treatment. One of the main advantages is that this type of brace is relatively comfortable to wear and easy to adjust. This means that patients can continue their daily activities without much discomfort or inconvenience.

Another advantage of the Twin Block brace is that it is removable, which makes it easy to clean and maintain good oral hygiene. This is important because maintaining good oral hygiene during orthodontic treatment is crucial for preventing tooth decay and gum disease.

Finally, the Twin Block brace is highly effective at treating a variety of orthodontic issues, including overbites, underbites, and crossbites. By promoting jaw growth and improving overall dental alignment, this type of brace can help patients achieve a more functional and aesthetically pleasing smile.

How Long Does Treatment with a Twin Block Brace Take?

The length of time required for treatment with a Twin Block brace will depend on several factors, including the severity of the patient's orthodontic issues and the patient's age. Generally speaking, treatment with a Twin Block brace can take anywhere from 9 to 18 months.

During this time, patients will need to visit their orthodontist regularly to have their brace adjusted and to monitor their progress. It is also important for patients to follow the instructions provided by their orthodontist and to wear their brace as directed in order to achieve the best possible results.


If you are looking for an effective way to straighten your teeth and improve your overall dental alignment, a Twin Block brace may be an excellent option. By using a two-phase process to promote jaw growth and straighten teeth, this type of brace can help you achieve a more functional and aesthetically pleasing smile. If you are interested in learning more about the Twin Block brace or other types of orthodontic treatment, be sure to speak with your orthodontist to determine which option is best for you.

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