A lost filling is quite common, especially with fillings that are many years old. There is no need to panic, but the exposed tooth should not be left alone.
- Fillings usually fall out because they are old, decay has returned at the edge, or the biting force is too strong.
- If one falls out, rinse gently, avoid chewing on that side and do not glue it back with store-bought glue.
- See a dentist within a few days to a few weeks even without pain, because an open hole lets decay spread toward the pulp.
- Good hygiene, avoiding hard objects and regular check-ups help fillings last longer.
You are eating and feel something rough in your mouth, then spit out a small piece of filling material. Many people feel no pain and leave it. This article explains why fillings fall out, what to do at that moment and when to see a dentist.
Why does a filling fall out?
The most common reasons are:
- An old filling that has worn down or developed gaps at the edge after years of chewing.
- New decay at the edge of the filling, which weakens the tooth underneath so the material loses its hold.
- Too little tooth structure left, so the filling has little to grip.
- Very strong biting force, teeth grinding or biting hard objects.
- The tooth was wet or covered in saliva when filled, so the material bonded poorly from the start.
What should you do right away?
- Rinse gently with warm water and remove any pieces left in your mouth.
- Avoid chewing on that side and limit very hot, cold or sweet food, because the tooth underneath is exposed.
- Brush gently, keep the hole clean, and do not poke it with a toothpick.
- Do not glue it back yourself with store-bought glue or materials, which can cause infection and more damage.
Do you need to get it refilled right away?
You should see a dentist soon, within a few days to a few weeks, even if the tooth does not hurt. An open hole lets food and bacteria in, and decay can spread quickly toward the pulp, making treatment more complicated. If the tooth is sensitive or painful, or the gum is swollen, please come sooner. See also how to tell whether decay has reached the pulp.
The dentist will check whether the tooth can be refilled or whether it has become too weak and needs another approach. You can read filling or porcelain crown to understand both options, and whether a filling hurts if you are worried about the procedure.
How can you make a filling last longer?
- Brush correctly and floss every day, see how to brush your teeth correctly.
- Do not use your teeth to bite hard objects such as bones, ice or bottle caps.
- If you grind your teeth at night, ask the dentist about a night guard.
- Have a check-up about every 6 months so the dentist can inspect the edges of your fillings.
You are welcome to walk in during working hours at Nha Khoa Kỳ Hòa, 266A - 268, Đường 3 Tháng 2, Phường Hòa Hưng, Ho Chi Minh City, or call the hotline 028.3868.1097 to ask about quieter hours first. For costs, please see our price list.
Frequently asked questions
Does it hurt when a filling falls out?
Some people feel nothing, others get sensitivity to hot and cold because the tooth underneath is exposed. Even without pain, you should see a dentist soon.
Can a filling that fell out be glued back?
Usually not. The dentist needs to clean the cavity, check for decay and then place a new filling.
How soon should I get a lost filling replaced?
Within a few days to a few weeks. If the tooth hurts, the gum swells or more of the tooth breaks, come in right away.
How long does a filling last?
It depends on the tooth, the material and your chewing habits. Many fillings last for years if you keep your mouth clean and have regular check-ups.