Dental fillings are used to restore areas of teeth affected by decay or minor fractures. They fill the space left after damaged or decayed tooth structure has been removed.
Fillings can wear, fracture, loosen or fall out over time. The likelihood varies depending on factors such as the material used, the size and location of the filling, bite forces and the condition of the surrounding tooth structure.
So is it normal for a filling to break or fall out? Let’s look deeper into what causes it, when it’s a concern, and how it’s treated.
Why Do Fillings Break or Fall Out?
There are several reasons why a filling might become loose, chipped, cracked, or dislodged.
Natural Wear and Age
Repeated chewing forces and changes in the oral environment can contribute to wear or changes in a filling over time.
Cracks, gaps or changes at the edge of a filling can sometimes develop and may allow plaque or food debris to collect around the restoration.
Biting Forces and Teeth Grinding
Heavy bite forces, clenching or teeth grinding can place additional forces on fillings, particularly larger restorations or those in back teeth.
People who grind their teeth are more likely to experience premature failure of dental work, including fillings.
Tooth Decay Around the Filling
Decay can develop in the tooth structure around an existing filling. Depending on its extent and location, this may affect the restoration or remaining tooth structure.
This is one of the most common reasons for older fillings to fall out.
Poor Fit or Bite Interference
If a filling affects the bite, additional forces may be placed on the restoration or surrounding tooth structure. A dentist can assess whether adjustment or further treatment is required.
Trauma or Accidents
Chewing unexpectedly on something hard like a seed, bone fragment, or ice or an accident involving the mouth can cause a sudden break in a filling or the surrounding tooth structure.
Type and Age of Material
Different restorative materials have different properties, and the longevity of a filling or restoration varies according to factors such as material, size, location, bite forces, oral hygiene and the condition of the tooth.
What Happens If a Filling Falls Out?
A lost or broken filling does not always require emergency treatment, but the tooth should be assessed to determine its condition and whether treatment is required.
If dentine or the dental pulp is exposed, the tooth may develop sensitivity, pain or other symptoms that warrant assessment.
What Should I Do If My Filling Falls Out or Cracks?
If you suspect a filling has broken or fallen out:
- Keep the area clean – Gently rinse with water to help clear food particles from around the tooth.
- Brush carefully – Use a soft-bristled toothbrush around the affected area.
- Avoid chewing on the affected side if this aggravates the tooth until you have been assessed by a dentist in Bundoora.
- Temporary dental repair products are available from some pharmacies. If you are considering using one, follow the product instructions carefully and understand that it does not replace dental assessment or treatment.
- Arrange a dental assessment to determine why the filling has broken or fallen out and whether treatment is required.
Avoid placing aspirin, household products or other substances directly on the tooth or gums, as these may irritate or injure oral tissues.
How a Dentist Assesses a Broken or Lost Filling
Treatment will depend on how much damage has occurred:
- Minor loss or damage: The dentist may consider repairing or replacing the restoration depending on the remaining tooth structure.
- More extensive loss of tooth structure: A dental crown or another restorative option may be considered depending on the clinical findings.
- If decay is present: The dentist will assess its extent and discuss the appropriate restorative treatment.
- If the dental pulp is affected: Root canal treatment or another treatment option may be considered depending on the condition of the tooth.
Dental X-rays may be recommended where they are clinically appropriate to assess the tooth and surrounding structures.
Caring for Teeth With Existing Fillings
General care for teeth with existing fillings may include:
- Brush twice daily with fluoride toothpaste and clean between the teeth.
- Use a soft-bristled toothbrush and non-abrasive toothpaste.
- Avoid using teeth to bite hard non-food objects such as pens or ice.
- Follow any dietary advice provided by your dentist for the particular restoration.
- If you grind or clench your teeth, discuss whether a custom mouth guard may be appropriate.
- Attend dental check-ups at intervals recommended for your individual oral health needs.
Routine examinations allow your dentist to monitor existing fillings and assess changes in the surrounding tooth structure over time.
Frequently Asked Questions
Is it common for old fillings to fall out?
Fillings can wear, fracture, loosen or fall out over time. The likelihood depends on factors such as the restoration material, size, location, bite forces and condition of the surrounding tooth structure.
What does a broken filling feel like?
You may notice a sharp or rough edge, a gap in the tooth, sensitivity or discomfort when biting or eating.
Is it painful if a filling falls out?
Not always. Some people experience sensitivity to temperature or pressure, while others have little or no discomfort. If pain, sensitivity or other symptoms develop, arrange a dental assessment.
How urgent is a lost filling?
A lost filling does not always require emergency treatment. The urgency depends on symptoms, the amount of tooth structure affected and whether there is pain, swelling, trauma or another concern.
Can I eat if my filling has fallen out?
If chewing aggravates the tooth, avoid using the affected side until it can be assessed. Follow any specific dietary advice provided by your dentist.
Do I always need a new filling if one breaks?
Not necessarily. Your dentist will assess the tooth and remaining restoration and discuss whether repair, replacement or another treatment option may be appropriate.
When to Have a Broken or Lost Filling Assessed
Fillings can wear, fracture or become loose over time. If you notice a change in an existing filling, a dental assessment can help determine the condition of the restoration and whether monitoring or treatment is appropriate.
If a filling feels loose, cracked or has fallen out, Radiant Smiles Dental Bundoora can assess the tooth and discuss whether repair, replacement or another treatment may be appropriate. The clinic provides dental care for patients from Bundoora and surrounding suburbs including Macleod, Watsonia and Greensborough.
