Your child’s little baby teeth have some big responsibilities. Until the adolescent years, they will not only help your youngster bite and chew (i.e., get proper nutrition) and speak correctly but also help guide the permanent teeth underneath them into proper position. In fact, a major function of baby teeth is to hold space for the adult teeth that will eventually push them out.

At least that’s how it’s supposed to work; sometimes, however, injury or disease can cause a baby tooth to be lost prematurely. When that happens, the permanent teeth that are coming in on either side can actually drift into the space that was reserved for another tooth. This can cause teeth to erupt out of position or to be blocked entirely, and it may result in crowded or crooked teeth.

Fortunately, if your child loses a tooth prematurely, there’s a dental appliance we can use to hold the space open for the permanent tooth that is meant to fill it. The device is, not surprisingly, called a “space maintainer” or a “space maintenance appliance.” Made of metal and/or plastic, space maintainers can be fixed (cemented) or removable, but either way their purpose is the same: to help your child develop the best bite possible and hopefully avoid the need for braces later on.

Fixed appliances are cemented onto adjacent teeth. They are made in many different designs: One consists of a band that goes around a tooth and then a wire loop that extends out from the band to hold the space; another features a loop attached to a stainless steel crown, which goes over a nearby tooth. In either case, the loop extends just to the point where it touches the next tooth. Fixed space maintainers are often preferred with younger children, because they are less easy to fidget with, break, or misplace than appliances that can be removed.

Removable appliances look like the type of retainer that is worn at the end of orthodontic treatment. It can have a false tooth on it, which is particularly useful when the lost tooth was visible in the mouth. Older children can usually handle the responsibility of wearing this appliance and caring for it properly.

Whether fixed or removable, your child’s space maintainer will be custom-made after we take impressions of his or her mouth. A child will wear a space maintainer until x-rays reveal that the tooth underneath is ready to erupt naturally. It is very important that anyone wearing a space maintainer keep up good oral hygiene at home and come in for regular professional dental cleanings.

Space maintainers are also useful when one or more permanent teeth are congenitally missing — in other words, they have never existed at all. In cases like this, which are not uncommon, permanent dental implant teeth are often recommended for adolescents or adults to replace a tooth they weren’t born with. But timing is very important with dental implants — they can’t be placed in a growing child. Therefore, we may use a space maintainer with a false tooth on it until jaw growth is complete and an implant can be appropriately placed. It’s a simple, non-invasive way we can avoid a malocclusion (bad bite) with some timely intervention.

Some children are just too fearful to receive necessary dental care. In that type of situation, we may recommend conscious sedation with nitrous oxide to help make your child’s experience of dental treatment stress-free.

Nitrous oxide, a colorless gas with a slightly sweet odor, has been used in medicine for about a century. It’s a safe and effective method of administering conscious sedation, which means that a child (or adult) will stay awake during the procedure, but feel completely relaxed — even happy. All bodily functions remain normal during the administration of nitrous oxide, and its effects wear off quickly afterwards.

How Is Nitrous Oxide Administered?

As a form of conscious sedation, nitrous oxide is inhaled through a small mask that fits comfortably over a child’s nose. The gas is mixed with oxygen as it is being delivered, and both gases are always kept at a level that is safe for the body. In just a few minutes, the patient may start to experience a floating sensation, and perhaps some tingling in the hands and feet. That’s a sign that the sedation is working. Once it has been verified that your child is calm and comfortable, and that the dose is correct, the dental procedure can begin.

Nitrous oxide itself isn’t a substitute for a local anesthetic in children or adults as it’s considered an anxiolytic, which means it makes anxiety disappear. However, for some pediatric procedures, a child receiving nitrous oxide may not need an anesthetic injection. Even if they do need a numbing shot, they won’t mind at all while under sedation with nitrous oxide. Yet they won’t be asleep — they’ll be able to speak, be aware of what’s going on, and they will remain in control during the procedure. In fact, the dose can be fine-tuned to just the level of sedation they need to make them comfortable yet alert.

When the procedure is over, the flow of nitrous oxide is decreased to zero, and the oxygen will be increased. After resting in the chair for a few minutes, the child will feel completely normal.

Who Can Benefit From Nitrous Oxide?

Any child whose anxiety would otherwise keep them out of the dental chair can benefit from conscious sedation with nitrous oxide. Before beginning treatment, we will take a complete medical history, including any medications your child is taking. We will make sure that your child is safe and comfortable. In fact, we sometimes create a fantasy of your child being an airplane pilot wearing their flight mask to encourage their imagination so that they have a good time during treatment. Afterwards, they will likely not remember a thing.