Short answer: Orthodontic elastics are small elastic loops that attach to little hooks and buttons on braces or clear aligners. By creating a gentle pulling force between the upper and lower jaws, they help correct the bite. To be effective, they need to be worn for the period set by the doctor, in most cases for most of the day, and replaced regularly.
Many patients undergoing braces or clear aligner treatment hear at some point that their doctor wants them to wear orthodontic elastics. They may look like a small detail at first glance, but elastics are an important tool that ensures not only that the teeth line up neatly but that the upper and lower jaws close together correctly. In this article we explain in plain language what elastics are for, what types there are and what to watch for to make treatment successful.
What are orthodontic elastics (rubber bands)?
An orthodontic elastic is a medical-grade elastic loop attached to the brackets bonded to the teeth or to small hooks used with clear aligners. While the wires and brackets move the teeth one by one, elastics create a steady, gentle force between the upper and lower teeth. This force helps change how the teeth fit together, that is, the bite.
Elastics do not look like an external device; because the patient puts them on and takes them off, the success of treatment depends largely on the patient's routine. What the doctor can do is set up the right plan and direct the elastic to the right place; the rest depends on daily use.
What problems are elastics used for?
Elastics are used for problems related not to the alignment of the teeth but to the position of the jaws relative to each other. The main groups according to their purpose are as follows:
- Class II elastics: Used when the upper teeth are too far forward relative to the lower teeth. The elastic usually runs from the upper canine area to the lower back molar and helps guide the upper teeth backward and the lower teeth forward. For detailed information on protruding upper teeth, you can look at our protruding teeth page.
- Class III elastics: Used, with the direction reversed, when the lower teeth sit ahead of the upper teeth.
- Vertical elastics: In situations such as an open bite, where the upper and lower front teeth do not touch, they help the teeth come closer together vertically. We describe this condition separately on our open bite page.
- Cross elastics: In situations where the upper and lower teeth close out of alignment to the sides, they support the correction of a crossbite.
- Midline and finishing elastics: They can be used to align the upper and lower midlines or to help the teeth settle together better at the end of treatment.
Which type of elastic is attached between which teeth, and with what force, varies from person to person. This decision is made by the doctor after evaluating the exam, X-rays and measurements; choosing an elastic type or changing its position on your own is not appropriate.
How are elastics used in braces and clear aligner treatment?
With fixed braces, elastics are attached to small hooks added to the brackets or to the bracket wings. The patient puts the elastic on themselves while opening and closing the mouth, so the doctor shows you together how to put it on at the first visit.
In clear aligner treatment, the elastic is usually attached to a small cut-out on the aligner (the hook area) or to a small button bonded to the tooth. At our clinic, clear aligner treatment is carried out only with Invisalign; in this treatment too, elastic support can be planned when needed. Because the elastic is worn while the aligner is in the mouth, it is important for the daily routine to match the aligner wear time. You can read about the general treatment process on our clear aligner treatment page, and about daily use in the article on how to use clear aligners.
The same plan is not applied to every clear aligner patient who needs elastics. Some patients need elastics only in certain phases of treatment, and others may not need them at all. This is determined according to the initial dental and skeletal structure.
How many hours a day should orthodontic elastics be worn?
Unless the doctor says otherwise, elastics are in most cases kept in the mouth for most of the day, except when eating and brushing the teeth. A continuous force is important for the teeth and jaw to move in the desired direction. An elastic worn only occasionally applies pulling force while it is on, but when it is taken off the teeth tend to return toward their old position; as a result, progress slows down.
Another important point is replacing the elastic. Elastic material loses its tension quickly in the mouth under the effect of saliva and heat. For this reason, most doctors recommend replacing the elastics with new ones at least once a day, sometimes after meals. Keeping spare elastics from the pack you were given in your bag and at home is useful in this regard.
- Take the elastics out only while eating and cleaning your teeth, and then put in new ones.
- Do not reuse an elastic that has lost its tension or has broken.
- Do not wear two elastics at once to get quicker results, or use a thicker elastic than the doctor specified; excessive force can harm the teeth and surrounding tissues.
- If an elastic breaks or shifts, let your doctor know without waiting for the check-up visit.
What happens to treatment if elastics are not worn?
Not wearing elastics as planned can lengthen the treatment time and, in some cases, mean that the intended bite arrangement cannot be achieved. Even if the teeth are neatly aligned, treatment remains incomplete if the upper and lower jaws close out of harmony with each other.
A common situation is that the expected progress is not seen at a check-up in a patient who is not wearing elastics, and the doctor emphasizes the elastic routine again. In clear aligner treatment, if elastics are not worn, the aligners may not fully seat on the actual position of the teeth; in that case a new series of aligners or additional planning may be needed. As a result, the treatment time and the number of appointments can increase. You can find the general timing topic on our page on how long clear aligner treatment takes.
What is felt while wearing elastics, and what should you watch for?
In the first days after you start wearing elastics, there may be a slight tenderness or feeling of pressure in the teeth and around the jaw. This feeling usually eases within a few days. Preferring soft foods and managing discomfort as your doctor recommends is enough. If the tenderness lasts long or gets worse, you should contact your doctor.
There are other points to watch for during use:
- Avoid opening your mouth too wide, or breaking the elastic while yawning or laughing.
- Do not pull hard when taking the elastic off; take care not to bend the hook.
- If you have a latex allergy, be sure to tell your doctor; latex-free elastic options are available.
- When attaching an elastic, make sure the hook is in the right place; an elastic attached to the wrong place will not have the expected effect.
- Keep up your brushing and flossing habits; plaque buildup can speed up in a mouth with an appliance.
In addition, if you experience marked pain in the jaw joint area, clicking or difficulty opening your mouth, you should tell your doctor rather than stopping the elastics on your own. The usage plan can be reviewed after these symptoms are evaluated.
How long does elastic treatment take?
The duration of elastic use does not depend on a fixed schedule. It varies according to the type of bite problem, the bone and tooth structure and the patient's compliance. A few months may be enough for some patients, while others may continue wearing elastics for much of the treatment. For this reason, you should not compare your own duration with someone else's experience.
At our clinic, in patients who need elastics, progress is evaluated at regular check-ups; when the bite has improved, the elastics are stopped and the final stage of treatment begins. To maintain the position achieved at the end of treatment, retainer use is also required.
Orthodontic exam in Ankara
If you think your lower and upper teeth do not fit together fully even though your teeth are straight, or if you have questions about wearing elastics during treatment, you can have an exam at our clinic in Park Oran Ofis, Çankaya. Our orthodontist evaluates your intraoral and X-ray findings and explains the suitable treatment options; the cost of treatment is communicated in writing after planning. For an appointment, you can use our contact page.
Frequently asked questions
What are orthodontic elastics for?
Elastics help correct the bite by creating a gentle force between the upper and lower jaws. They target the fit of the lower and upper teeth to each other more than the alignment of the teeth.
How often should I change my elastics?
Because elastic material loses its tension quickly, most doctors recommend replacing the elastics at least once a day. The exact frequency is determined by the doctor according to your treatment plan.
Are elastics needed in clear aligner treatment too?
In some patients they are, in others not. In cases where a bite correction is planned, elastics can be used together with Invisalign aligners; this decision is made at the exam and in treatment planning.
What happens if I do not wear my elastics for a day?
A single day's lapse generally does not ruin treatment, but if it is repeated often it slows progress and may lengthen treatment time. If there is a lapse, continue wearing the elastics regularly and tell your doctor at the check-up.