Spacers are small devices used in orthodontics to create space between teeth before braces are established. They are usually placed between the molars at the second orthodontic appointment before molar bands are applied. Spacers can be either circular rubber bands about a centimeter in diameter or small metal spring clips that push the molars apart. They stay between the teeth for one week and move the teeth apart slowly until they are far apart enough so that orthodontists can fit a tooth brace or molar band in between them or fit an expander with rubber rings or other appliances.

The purpose of spacers is to create a little space between certain teeth, usually molars, so that orthodontists can install metal bands around those teeth. Spacers can consist of different materials, but the most common types are rubber spacers and metal spacers. Rubber spacers are very small elastic loops that slide between two back teeth, while metal spacers are small metal rings that are inserted between two back teeth. The width of each spacer is designed to make sure there’s enough room for both bands to fit comfortably and securely around each tooth for them to move into position correctly.

Patients may experience various reactions to having spacers placed between their teeth. If the patient has a relatively small amount of space between their molars (or none at all), then the spacer may irritate the nerves in the gum of the mouth, causing constant pain. In some cases, the spacer digs into the gums, causing bleeding and swelling, and would be more uncomfortable than the actual braces. Patients are often warned not to pick at them or they will fall out. Spacers are usually in place for one to two weeks, and patients need to be careful of what foods they eat so that they don’t knock the spacers loose. They may also be advised not to floss between teeth where spacers are located.