Space Maintainer
A space maintainer is a dental appliance used in pediatric dentistry to hold space for a permanent tooth when a primary (baby) tooth is lost prematurely. It keeps the space open for a permanent tooth to erupt properly. It prevents adjacent teeth from drifting into the empty space, which can cause crowding or misalignment.
Why is it Needed?
When a baby tooth is lost early due to:
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Tooth decay
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Trauma
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Extraction
... the surrounding teeth may shift into the vacant space. This can:
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Obstruct the eruption path of the permanent tooth
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Cause orthodontic problems
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Lead to future needs for braces
So, a space maintainer preserves the natural spacing and alignment of the teeth.
How is it Placed?
1. Initial Visit (Diagnosis & Planning):
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Dentist takes X-rays and examines the site.
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Determines whether a space maintainer is needed.
2. Impression or Scan:
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A mold or digital scan of the child's teeth is taken.
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Sent to the dental lab to custom-make the appliance.
3. Second Visit (Placement):
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The space maintainer is cemented (fixed) or fitted (removable).
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Instructions on cleaning and care are given.
Types:
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Fixed (most common): e.g., band and loop, crown and loop
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Removable: like a retainer
Number of Visits Required
​Typically 2–3, with follow-ups every 6 months until the permanent tooth erupts.
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