Also known as: damaged dental repair, loose dental repair, missing dental repair, broken dental restoration, lost tooth covering, restoration fell out

Broken crown or filling in children means a part of a previous dental repair has cracked, loosened, or fallen out. A child may notice a rough edge, a spot that suddenly traps food, a tooth that feels sharp or hollow, or new sensitivity when chewing, drinking something cold, or brushing. In some cases, the repair comes out all at once. In others, it slowly chips away until the tooth begins to bother them again.

This symptom is often a sign that the protected tooth underneath is exposed, weakened, or starting to break down around the old repair. While some damaged restorations cause only mild irritation at first, others can quickly lead to pain, deeper decay, fracture, or irritation of the nerve if left untreated. Early evaluation helps determine whether the tooth can be repaired, replaced, or needs more protective treatment.

Possible Causes of a Broken Crown or Filling

Broken crown or filling is commonly associated with:

  • Normal wear and bite pressure – Over time, everyday chewing, grinding, or clenching can weaken an older dental repair until part of it cracks, loosens, or comes out.

  • New decay around the repaired tooth – Bacteria can collect at the edges of an older restoration and create new decay underneath or around it, making the repair less stable.

  • Biting hard foods or direct trauma – Ice, hard candy, popcorn kernels, or a hit to the mouth can chip or dislodge a dental repair, especially if the tooth was already vulnerable.

  • Weak or heavily damaged tooth structure underneath – If much of the original tooth is already worn, cracked, or decayed, the restoration may fail because the tooth no longer supports it well.

Treatments for a Broken Crown or Filling

Depending on the cause and amount of damage, treatment may include:

  • Fillings – If a small filling chips, leaks, or falls out, a new filling may rebuild the area, reseal the tooth, and reduce sensitivity from exposed tooth structure.
  • Crowns – When a larger repair has broken down or the tooth underneath needs fuller protection, a crown can cover the tooth, restore strength, and help prevent further fracture.
  • Baby Root Canals (Pulpotomy, aka Pulp Therapy) – If the underlying tooth has become inflamed or the inner pulp is exposed after the restoration fails, pulp therapy may be needed to remove damaged tissue and keep the baby tooth comfortable and functional.
  • Emergency Dentistry – When a dental repair breaks suddenly and causes pain, sharp edges, or trouble eating, emergency dental care can help protect the tooth quickly and determine the safest next step.

When to See a Dentist

Consider scheduling an appointment if your child:

  • Has a dental repair that falls out, cracks, or feels loose
  • Complains of sharp pain, sensitivity, or trouble chewing on the tooth
  • Has a rough or sharp edge that irritates the tongue, cheek, or gums
  • Develops swelling, worsening pain, or signs of infection around the tooth

Related Symptoms

Concerned About a Broken Crown or Filling?

Broken crown or filling is often a sign that a repaired tooth needs attention. We’d love to evaluate your child’s symptoms and make their visit comfortable, positive, and stress-free. Schedule an appointment today and get the answers you need.