Pedodonti

Space Maintainer

Name: Space Maintainer
Creator: Dore Medical Editorial Board
Published: 2026-05-11

A dental appliance that preserves the space left by a prematurely lost baby tooth, maintaining the necessary room for the permanent tooth to erupt properly.

Medically reviewed. Last updated: May 20, 2026.

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What Is a Space Maintainer?

A space maintainer is an orthodontic appliance that preserves the space left by a prematurely lost baby tooth for the permanent tooth that will erupt underneath. Baby teeth not only serve a chewing function, they also reserve space for the permanent teeth that will follow. When a baby tooth is lost before its natural shedding time, neighboring teeth shift toward the gap, the opposing tooth in the opposite jaw over-erupts, the permanent tooth cannot find space to emerge, and crowding develops. A space maintainer prevents this.

Space maintainers are most commonly used after early baby tooth extraction. Reasons for early extraction include advanced decay, failed root canal treatment, tooth loss after trauma, or congenitally missing permanent teeth. If the permanent tooth will erupt within six months after the baby tooth is lost, a space maintainer may not be necessary. However, if more than one year remains before the permanent tooth erupts, a space maintainer is strongly recommended. Otherwise, long and costly orthodontic treatment will likely be needed later.

Space maintainers are grouped into two main categories: fixed and removable. Fixed space maintainers are generally applied in two types: a band and loop design for single tooth loss, and a lingual arch design for multiple tooth loss. These appliances are cemented to adjacent teeth, cannot be removed by the child, and carry no risk of loss. Removable space maintainers are preferred when multiple teeth are missing or for aesthetic concerns in the front area. They resemble a retainer, and the child can insert and remove them.

Before the appliance is made, an X-ray is taken to evaluate the development stage of the permanent tooth and how long until it erupts. An impression is taken using the iTero intraoral scanner or a traditional method, and the appliance is custom-fabricated in the laboratory. At the fitting appointment, the fit is checked and the appliance is cemented. The child adapts to the space maintainer quickly. Regular brushing must be maintained, and the area around the appliance should be cleaned especially well. At routine check-ups, the integrity of the appliance and the eruption status of the permanent tooth are evaluated. When the permanent tooth begins to erupt, the appliance is removed. For all pediatric dental procedures, see our pediatric dentistry page. For cost information, see our space maintainer cost calculator page.

Types of Space Maintainers

Space maintainers are not one-size-fits-all. Different types of space maintainers are used depending on the location of the lost tooth, the number of teeth lost, the child's age, and when the permanent tooth is expected to erupt. At Doredent, the most suitable type of space maintainer for each child is determined after a clinical evaluation.

🔧 Fixed Space Maintainer (Band-Loop)

This is the most commonly used type of space maintainer. It consists of a metal ring (band) cemented to the tooth next to the missing one and a metal wire (loop) that preserves the space. It cannot be removed by the child and stays in the mouth until the permanent tooth is ready to erupt.

Standard option for single tooth loss.
Does not depend on patient compliance; works 24/7.
Cannot be removed by the child; highly reliable.
Does not cause significant discomfort in the mouth.
Monitored through regular check-ups.

Best suited for: Single-sided primary molar loss, young children where compliance may be challenging.

🦷 Fixed Space Maintainer (Crown-Loop)

Works on the same principle as the band-loop, but instead of a band, a stainless steel crown (SSC) is placed on the support tooth. If the support tooth has had a filling or pulpotomy, the crown both protects the treatment and functions as a space maintainer.

Ideal when the support tooth has a restoration.
Protects the treatment and functions as a space maintainer.
As reliable as the band-loop.
Cannot be removed by the child.

Best suited for: Cases where the adjacent primary tooth has an SSC or extensive restoration.

🔗 Fixed Space Maintainer (Lingual Arch / Nance Appliance)

Used when primary teeth are lost on both sides or when multiple teeth are missing. The lingual arch is applied in the lower jaw, while the Nance appliance is used in the upper jaw. A wire connected to bands on the molar teeth on both sides prevents the back teeth from shifting forward.

For cases with bilateral or multiple tooth loss.
Lingual arch: lower jaw, wire contacting the back surface of teeth.
Nance appliance: upper jaw, acrylic pad + wire contacting the palate.
Fixed design, does not depend on patient compliance.

Best suited for: Bilateral primary molar loss, multiple tooth loss, comprehensive space maintenance during mixed dentition.

😊 Removable Space Maintainer

An acrylic-based appliance that the child can put in and remove. It may be preferred when multiple teeth are lost or when front teeth are missing and there is an aesthetic need. Artificial teeth can be added to the acrylic body.

For cases with multiple tooth loss or front tooth loss.
Artificial teeth can be added if there is an aesthetic need.
Removable; easy to clean.
Completely depends on patient compliance; no protection if not worn.
Fixed space maintainers are generally preferred for younger children.

Best suited for: Multiple tooth loss, front tooth aesthetic needs, older children with high cooperation levels.

Which Type of Space Maintainer Is Right for Your Child?

The choice of space maintainer type depends on several factors: the location of the lost tooth (front tooth or back tooth), the number of teeth lost (single or multiple), whether the loss is one-sided or bilateral, the condition of the supporting teeth (healthy or restored), the child's age and cooperation level, and when the permanent tooth is expected to erupt. At Doredent, space maintainer decisions are made after a clinical examination and, if needed, X-ray evaluation. The most appropriate type for each child is clearly explained to families, and the decision is made together.

Treatment Process

Alternative Treatments

Risks and Complications

Which Children Need a Space Maintainer?

A space maintainer is not automatically placed for every child who loses a baby tooth early. The risk of space loss depends on the position of the lost tooth, the child's age, and when the permanent tooth is expected to erupt.

🦷 Children Who Lose Primary Molars Early

This is the most common indication for a space maintainer. When primary molars (first and second primary molars) are lost early, the permanent six-year molar behind them or neighboring teeth can drift into the empty space. This drift can leave insufficient room for the permanent premolars to erupt.

The highest risk of space loss occurs with primary molar loss.
When the second primary molar is lost, the six-year molar drifts forward rapidly.
Space loss can begin within weeks.
A fixed space maintainer (band and loop) is the standard option.

⏳ Children With Extended Time Before Permanent Tooth Eruption

If more than six months remain before the permanent tooth erupts, a space maintainer is strongly recommended. The longer this period, the higher the risk of space loss. An X-ray helps assess the permanent tooth's development stage and estimate eruption timing.

If more than one year remains before eruption, a space maintainer is essential.
If six months to one year remain, it is strongly recommended.
If less than six months remain, your dentist will decide based on eruption status.
X-rays help estimate expected eruption time.

🔢 Children With Multiple Primary Tooth Loss

When multiple primary teeth are lost early, the risk of space loss increases significantly. For unilateral or bilateral multiple losses, a lingual arch, Nance appliance, or removable space maintainer may be recommended.

Space loss risk increases markedly with multiple tooth loss.
Bilateral losses require bilateral space maintainers.
Comprehensive space preservation is planned.
This may reduce the need for future orthodontic treatment.

😊 Children Who Lose Front Primary Teeth

When front primary teeth are lost early, the risk of space loss is lower than with back teeth. However, a removable space maintainer with an artificial tooth may be considered for aesthetic reasons and speech development.

Space loss risk is lower in the front area.
An artificial tooth can be added if there are aesthetic concerns.
It can support speech development.
Removable space maintainers are preferred in these cases.

📐 Children Scheduled for Primary Tooth Extraction

When a primary tooth extraction is planned, your dentist will evaluate space maintainer needs beforehand. The space maintainer should be placed as soon as possible after extraction. Delays increase the risk of space loss.

Space maintainer planning begins with the extraction decision.
In some cases, the space maintainer can be placed during the same visit.
Delays can trigger space loss.
Impressions are taken before or immediately after extraction.

When a Space Maintainer Is Not Needed

Not every early primary tooth loss requires a space maintainer. Your dentist may not recommend one in the following situations:

If the permanent tooth is due to erupt very soon (the X-ray shows complete root formation and the tooth is ready to erupt beneath the gums).
When space loss risk is low after front primary tooth loss.
If the permanent tooth is already erupting and can be felt clinically beneath the gums.
If your child has sufficient space in the mouth and space loss risk is low.

The decision is always based on clinical examination and radiographic evaluation. At Doredent, we do not place unnecessary space maintainers. However, when one is needed, we do not recommend delaying placement.

After the Procedure

Space maintainer placement is typically a simple and quick procedure. Fixed space maintainers do not require anesthesia, while removable space maintainers are custom-made from impressions. Below you can find details that families should know after space maintainer placement.

First Days: Adjustment

Adjustment period: During the first few days, your child will notice the new appliance in their mouth. This is normal, and most children fully adjust to the space maintainer within 3-5 days.
Speech: Especially with removable space maintainers, there may be slight changes in the pronunciation of certain sounds during the first few days. This is temporary.
Eating: After a fixed space maintainer is placed, your child can eat normally. Sticky foods (gum, caramel candy, sticky gummy candies) should be avoided as they increase the risk of dislodging the space maintainer.
Discomfort: A slight pressure sensation or tongue irritation is normal. If there is significant pain, contact the clinic.

Caring for the Space Maintainer

Fixed space maintainer hygiene: Food debris can accumulate around the band and wire. Pay special attention to these areas during brushing. Gently cleaning around the wire and band with a toothbrush is sufficient.
Removable space maintainer cleaning: It should be removed and rinsed after each meal. It can be gently brushed with a soft toothbrush. When not in use, it should be stored in its storage case.
Avoid sticky foods: Gum, caramel candy, and sticky gelatin candies can dislodge or deform the fixed space maintainer.
Watch out for hard foods: Habits like chewing ice, hard nuts, and pencils can damage the space maintainer.

Follow-up and Monitoring

Regular checkups: During pediatric dentistry checkups every 6 months, the condition of the space maintainer is evaluated. The integrity of the band, position of the wire, and eruption status of the permanent tooth are checked.
Monitoring permanent tooth eruption: When the permanent tooth is about to erupt, the space maintainer is removed. This timing is determined through regular checkups. If the space maintainer is removed too early, space loss may occur during the remaining period; if removed too late, it may prevent the permanent tooth from erupting.
If the space maintainer comes loose: If the fixed space maintainer comes loose, contact the clinic as soon as possible. During the time without a space maintainer, adjacent teeth can shift. Loosening is typically corrected with re-cementation.
Removable space maintainer use: Removable space maintainer effectiveness depends entirely on patient compliance. If your child does not wear the appliance, no protection is provided. It is important for families to monitor usage discipline.

When Is the Space Maintainer Removed?

When the permanent tooth begins to erupt: When an X-ray or clinical examination shows that the permanent tooth is ready to erupt, the space maintainer is removed.
Removal is simple: Removing a fixed space maintainer is a simple procedure that takes a few minutes, is painless, and does not require anesthesia.
Removal timing is critical: Timing is determined through regular checkups. Permanent tooth eruption should not be prevented.

An Important Message for Families

Once space loss occurs, correction requires orthodontic treatment. Space-opening treatment with Invisalign or braces is far more comprehensive than a space maintainer in terms of both time and cost. A space maintainer is a simple, effective, and low-cost preventive measure that eliminates this risk. When a baby tooth is lost early, space maintainer evaluation should be done as soon as possible. Delay initiates space loss, and regaining lost space is much more difficult. At Doredent, the need for a space maintainer is evaluated separately in all cases where primary tooth extraction is planned.

Frequently Asked Questions

What is a space maintainer and why is it needed?

A space maintainer is a fixed or removable appliance that helps preserve the gap left by a prematurely lost baby tooth and prevents neighboring teeth from shifting into that space. Baby teeth are not just temporary placeholders—they guide the permanent teeth below and help maintain the necessary space. When a baby tooth is lost early, neighboring teeth can begin shifting into the gap within weeks. This shifting can result in insufficient space for the permanent tooth to erupt, leading to crowding, alignment problems, and the need for orthodontic treatment later. A space maintainer is a simple, effective, and low-cost preventive measure. Compared to the cost and duration of orthodontic treatment that may be needed later, the preventive value of a space maintainer is very high.

Is a space maintainer needed for every early loss of a baby tooth?

No, not in every case. The need for a space maintainer is evaluated based on the location of the lost tooth, the child's age, and the expected eruption time of the permanent tooth. A space maintainer is typically needed when: a baby molar is lost early, the permanent tooth is more than 6 months away from erupting, or multiple baby teeth have been lost. A space maintainer may not be necessary when: the permanent tooth is already about to erupt, the risk of space loss is low with front baby tooth loss, or the permanent tooth root is fully formed and ready to erupt. At Doredent, the decision is always made following a clinical examination and, when necessary, X-rays. We do not place unnecessary space maintainers, but we also do not recommend delaying placement when needed.

Does a space maintainer cause pain?

Placement of a fixed space maintainer typically does not require anesthesia and is painless. A brief sensation of mild pressure may be felt when the band (metal ring) is placed on the supporting tooth, but this is not described as pain. For the first few days, the child will notice a new appliance in their mouth. Tongue irritation, mild pressure sensation, and a feeling of something foreign are normal. Most children fully adapt to the space maintainer within 3–5 days and no longer notice its presence. If severe pain or persistent discomfort occurs, contact the clinic. Removable space maintainer placement also should not cause pain. There may be an adjustment period during the first few days; temporary minor changes in speech are normal.

How long does a space maintainer stay in the mouth?

The length of time a space maintainer remains in the mouth depends on when the permanent tooth is expected to erupt. The space maintainer is removed when the permanent tooth is about to emerge. This period can range from a few months to a few years. During regular 6-month checkups, the development and eruption status of the permanent tooth are monitored. The timing of space maintainer removal is critically important: if removed too early, space loss can occur during the remaining time; if removed too late, it may block the permanent tooth from erupting. This timing is determined by the dentist. Space maintainer removal is a simple procedure that takes only a few minutes, is painless, and does not require anesthesia.

What happens if the space maintainer comes loose?

A fixed space maintainer may become loose or detached over time. If loosening is noticed, contact the clinic as soon as possible. During the time without a space maintainer, neighboring teeth can begin shifting into the gap, so quick intervention is important. Loosening is typically corrected simply by re-cementing the band. If the space maintainer itself is not damaged, a new one does not need to be made. If the band or wire is damaged, a new space maintainer is fabricated. To reduce the risk of loosening, it is important for the child to avoid sticky foods (gum, caramel candy), hard foods (ice, hard nuts), and habits like chewing on pencils.

What happens if a space maintainer is not placed?

If a space maintainer is not placed, neighboring teeth can shift toward the gap left by the lost baby tooth. This shifting can begin within weeks, and over time, insufficient space remains for the permanent tooth to erupt. As a result, the permanent tooth may erupt in the wrong position, remain impacted, or cause crowding. Once space loss has occurred, correction requires orthodontic treatment. Treatment to reopen space with Invisalign or braces is far more involved in both time and cost than a space maintainer. In some cases, it may not be possible to fully regain the lost space. For this reason, when a baby tooth is lost prematurely, a space maintainer evaluation should be done as soon as possible. At Doredent, the need for a space maintainer is assessed along with the extraction decision for all cases where baby tooth extraction is planned.

Treatment Pricing

Pricing

Space Maintainer Pricing

At Doredent, we offer transparent pricing for our international patients. As every case is different, the final treatment cost depends on your individual evaluation.

The cost of Space Maintainer varies based on factors such as the type of space maintainer (fixed or removable) and scope. For an accurate quote, a personalized assessment is recommended.

For pricing details, reach out via WhatsApp or book your initial consultation.

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