Replacing the filling
If the tooth is sound enough, a new filling may restore comfort and shape.
Lost filling
A lost filling can leave a tooth sharp, sensitive or vulnerable, and the right response depends on pain, decay risk and how much tooth remains.
Review required by Newstead Dental Co Updated 2026-07-28
My filling has fallen out. Can it wait?
A lost filling may feel like a small inconvenience, but it can expose weaker tooth structure, decay or a sharp edge. The sensible next step depends on comfort, tooth strength and whether the tooth is vulnerable.
What you may be worried about
- The tooth may break further.
- Food may pack into the space.
- Sensitivity or pain may develop.
Possible causes
- Wear around an older filling.
- Decay under or beside a restoration.
- Bite pressure, grinding or a crack in the tooth.
- A piece of tooth breaking with the filling.
When to treat this as urgent
Urgency level: soon
- The tooth is painful, sharp, bleeding or badly broken.
- There is swelling, severe sensitivity or trauma.
- The bite feels different or the tooth feels weak.
What to do now
- Keep the area clean and avoid chewing hard or sticky foods on that tooth.
- Book an assessment so the tooth can be checked for decay, cracks, or exposed inner tooth structure.
- Use urgent help if there is swelling, severe pain, trauma, or a large sharp break.
What to avoid
- Do not try to glue the filling back in.
- Do not leave food packed into the space for long periods.
When to arrange a dental assessment
- Arrange assessment soon if the tooth is sharp, sensitive, catching food, or part of the tooth has broken away.
What a dentist may need to assess
- Remaining tooth structure, decay, cracks, bite pressure, nerve symptoms, and whether a simple filling would last.
Options that may be considered
Stronger restoration
If the tooth is heavily filled or weak, a crown or other protective option may be considered.
Further treatment
If decay or nerve involvement is present, the plan may need to address the underlying problem first.
What we would consider before recommending treatment
- How much tooth structure remains.
- Whether decay, cracks or nerve symptoms are present.
- Whether a simple filling would be durable.
If it were our own teeth
If it were our own tooth, we would want to know whether simply replacing the filling would solve the problem or whether the tooth needs stronger protection.
A sensible next step
Book an appointment if a filling has fallen out, especially if the tooth is sharp, sensitive or collecting food.
Possible next steps
- A new filling, stronger restoration, temporary protection, root canal treatment, or extraction may be discussed depending on the finding.
Choosing the next step
Use the emergency pathway only when the problem may need urgent review.
For routine, planned, or unclear but non-urgent concerns, book a normal appointment. For swelling, trauma, severe pain, bleeding, or a broken tooth that cannot wait, use the emergency assessment instead.
Common questions
Is a lost filling an emergency?
It can be urgent if there is pain, swelling, trauma, a sharp edge or a large broken area.
Can the same filling be put back?
Usually the tooth is assessed and restored with new material if suitable.
Want us to assess your situation?
Book when you feel ready to understand the problem, options and next step.