What is space maintainer?
Dentists call baby teeth primary or deciduous teeth. Primary teeth can be lost too early for several reasons:
Space maintainers may be used:
The maintainer keeps the space open until the permanent tooth comes in.
Types of Space Maintainers
A space maintainer is made of stainless steel and/or plastic. It can be removable. Some space maintainers are cemented onto the teeth on either side of the space in the child’s mouth. This is called a fixed space maintainer.
A removable space maintainer looks like a retainer. It uses artificial teeth or plastic blocks to fill in the space or spaces that need to stay open. This type of space maintainer often is used when the space is obvious to other people. Removable space maintainers work well in older children who can reliably follow directions about caring for this appliance.
There are several kinds of fixed space maintainers. A band-and-loop maintainer is made of stainless steel wire. It is held in place by a crown on the tooth next to the space or an orthodontic-type band around one of the teeth next to the open space. A wire loop is attached to the band or crown. It sticks out across the space where the tooth is missing and just touches the tooth on the other side of the open space. The wire loop holds the space open. This allows the permanent tooth enough space to come into the mouth without crowding.
A lower wire known as a “lingual arch” is used when back teeth are lost on both sides of the lower jaw. “Lingual” refers to the inside or tongue side of the teeth. This type of space maintainer uses bands wrapped around a tooth on either side of the mouth behind the missing teeth. A wire connected to the bands runs along the inside of the bottom teeth, just touching them. This will maintain the space on both sides.
Another type of fixed space maintainer is called a distal shoe appliance. It is inserted under the gums. It is used when a child loses the baby tooth in front of a 6-year molar that has not yet come into the mouth. The 6-year molar is also called the first permanent molar. Because it has not come in yet, there is no tooth to hold a band-and-loop space maintainer in place. A distal shoe appliance has a metal wire that is inserted slightly under the gum. This keeps the space from closing.
For children missing several teeth, a partial denture may be used instead of a space maintainer. For example, children with a congenital disease called ectodermal dysplasia often are missing multiple primary teeth. There are no permanent teeth to replace them. A child with this condition will use a removable denture into adulthood. After that, the child can receive dental implants or a bridge or continue to use a partial denture to replace the missing teeth.
Are Space Maintainers Always Necessary?
Not every tooth that is lost too early requires a space maintainer. If one of the four upper front teeth is lost early, the space will stay open on its own until the permanent tooth comes in.
If you do not take your child to the us at least every six months a space maintainer can cause problems. This especially can occur if your child does not brush well. The gum tissue in the space can grow over the wire arm, increasing the risk of infection. If that happens, your child’s dentist may have to remove the gum tissue by surgery.
If the permanent tooth is about to erupt, the dentist may decide not to use a space maintainer unless your child needs braces and space is a critical issue.
Some children may not be able to cooperate during the process of making the space maintainer. Others may be at risk of injury if the space maintainer comes loose or breaks. These include children with diseases that affect how they breathe or swallow, and children who are very young. The ability to cooperate with the dentist is more important than a child’s age. Most young children can have space maintainers placed, if needed. Most of them are able to cooperate during the process.
Making the Space Maintainer
For a fixed space maintainer, a metal band is placed around one of the teeth next to the space, and impressions are made. Impressions are made with a soft material that tastes like toothpaste. It sets into a gel around the teeth and is easily removed from the mouth. This allows the laboratory to make a copy of the teeth to use in making the space maintainer. The band is also removed and sent to the dental laboratory with the impressions. The lab creates the space maintainer and sends it back to your child’s dentist. He or she cements it into place at a second office visit. Sometimes, a space maintainer can be made in the office in a single visit without impressions.
To make a removable space maintainer, we first makes impressions. They are sent to a lab, which makes the appliance.
Caring for Your Space Maintainer
The space maintainer may feel unusual at first. But after a few days, your child probably will forget about it. A removable space maintainer with replacement teeth can affect speech until your child gets used to it.
It’s important for your child to brush regularly to keep the gum tissue healthy. A child with a fixed space maintainer needs to avoid hard or sticky foods and chewy candy and gum. They can loosen the band or get caught in the wire arm. If the space maintainer comes loose, there is a risk of swallowing or inhaling it into the lung.
Finally, your child shouldn’t push on the space maintainer with his or her tongue or fingers. That could bend or loosen it.
We will take X-rays regularly to follow the progress of the incoming permanent. When the tooth is ready to erupt, the space maintainer is removed.
If a permanent tooth is missing, the space maintainer will be used until your child’s growth is completed (age 16 to 18). Then a dentist will place a bridge, implant or removable partial denture in the space.
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