Please help! The inactivated (arsenic trioxide) filling has fallen out, is there a problem?

If the arsenic trioxide fell out before it was time for a follow-up appointment, then the pulp may be inactivated and incomplete, so it's best to go back to the doctor and have a new one sealed!

But we don't use that medicine anymore because it's too toxic (a child once had necrosis of permanent teeth due to arsenic trioxide), so ask the doctor if he can give you a different medicine

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