Clear aligners are transparent plastic trays that fit closely over the teeth. They are specially made for each person based on digital scans or impressions of the teeth. Unlike traditional braces, clear aligners do not have metal wires or brackets. Because they are clear, they are much less noticeable when worn.

During treatment, patients receive a series of aligners. Each aligner is slightly different and is designed to move the teeth a small amount. As the patient changes from one aligner to the next, the teeth gradually shift into the correct position. Aligners are removable, which means they can be taken out while eating, drinking, brushing, and flossing.

The main purpose of aligners is to correct problems with the position of the teeth and the bite. They are often used to treat crooked teeth, crowded teeth, and gaps between teeth. Aligners can also help correct certain bite problems, such as when the upper and lower teeth do not fit together properly.

Straightening the teeth is not only important for appearance but also for oral health. When teeth are properly aligned, they are easier to clean and maintain.

The length of aligner treatment depends on how severe the alignment problem is. In many cases, treatment can take between six months and eighteen months. Mild cases may take a shorter time, while more complex cases may require longer treatment.

For the treatment to work properly, aligners should usually be worn for about 20 to 22 hours each day. They are typically changed every one to two weeks as the teeth gradually move into the planned position. Regular visits to the dentist or orthodontist are also necessary to check the progress of the treatment.

After the teeth have been straightened, the next step is called the retention phase. This is when retainers are used. Retainers are appliances designed to hold the teeth in their new positions after orthodontic treatment.

Retainers may be removable, such as clear plastic retainers, or fixed, where a thin wire is attached to the back of the teeth. Both types are used to prevent the teeth from shifting back to their original position.

Retainers are usually worn full-time for the first few months after aligner treatment, often about three to six months. After this period, most people only need to wear them at night while sleeping. Some dentists recommend wearing retainers at night for several years or even long-term to keep the teeth straight.