Definition

A lost filling or lost crown occurs when a dental restoration becomes dislodged, leaving the underlying tooth exposed.
Without protection, the tooth is vulnerable to sensitivity, pain, fracture, and infection and often requires urgent dental care.

Is This a Dental Emergency?

Yes — a lost filling or crown often requires prompt clinical assessment, as the exposed tooth is no longer protected and may be vulnerable to pain, damage, or infection.
Emergency dental care focuses on diagnosing the underlying risk and stabilising the tooth safely until definitive treatment can be planned. This approach is explained in our emergency dentistry care framework.

Immediate dental emergency (seek care today):

  • Severe pain or throbbing
  • Sharp edges cutting the tongue or cheek
  • Swelling around the tooth or face
  • Tooth feels soft, hollow, or fragile

Same-day urgent dental problem:

  • Sensitivity to cold, air, or pressure
  • Crown completely off or loose
  • Food trapping in the exposed area

Possibly non-urgent (still needs assessment):

  • No pain yet, but the tooth is exposed

Even without pain, delaying treatment increases the risk of infection and fracture.

Common Causes of a Lost Filling or Crown

Several reasons can cause a filling or crown to loosen or detach:

  • Decay developing beneath the restoration
  • Old or worn fillings
  • Biting something hard
  • Teeth grinding or clenching
  • Temporary crowns loosening
  • Cracked or fractured supporting tooth

 

What Happens If You Delay Treatment

A lost filling or crown will not repair itself and leaving the tooth exposed can quickly lead to complications.

Short-term risks:

  • Increasing sensitivity or pain
  • Food trapping and irritation

Medium-term risks:

  • Decay progressing deeper into the tooth
  • Without protection, the exposed tooth can weaken and develop a cracked tooth, making it more difficult to restore predictably.

Severe outcomes:

  • Dental infection
  • In some cases, delaying treatment allows irritation or infection to develop, leading to severe toothache that requires urgent care.
  • Need for root canal treatment or extraction

How Lost Fillings and Crowns Are Treated at Deepcar Dental

Treatment focuses on protecting the tooth and restoring strength and function.

At Deepcar Dental, lost fillings and crowns are managed by our clinical team led by Dr Ibraheem Ijaz, GDC-registered Principal Dentist with advanced training in restorative and digital dentistry. Same-day assessment is available where clinically appropriate.

  • Clinical examination
  • Digital X-rays to check for decay or cracks
  • Temporary restoration if needed
  • Protection of exposed dentine
  • New filling
  • Inlay or onlay
  • Recementing a crown if it is intact and the tooth underneath is healthy
  • placement of a temporary crown to protect the tooth while a permanent restoration is planned
  • Emergency root canal treatment (if the nerve is affected)

What You Should Do Right Now

You Should-

  • Keep the filling or crown if it came out intact
  • Rinse gently with warm water
  • Avoid chewing on the affected side
  • Use temporary dental cement if needed (optional)
  • Keep the area clean with gentle brushing and saltwater rinses

Do Not

  • Use household glue
  • Bite or test the tooth
  • Leave the tooth exposed for several days

FAQs About Lost Fillings and Crowns

1. Can the same crown be reused?

Often yes, if it is intact and the tooth underneath is healthy.

The dentine is exposed, which transmits temperature directly to the nerve.

Many cases can be treated the same day. If a new crown is needed, a temporary crown is placed immediately.

Get Same-Day Help for a Lost Filling or Crown

If your filling or crown has fallen out, contact us as soon as possible. Early assessment helps protect the tooth and prevent complications.