How do I know if I have a cavity?
An early cavity often does not hurt. Sensitivity to sweet things or cold, a brown mark, a visible hole or food that gets stuck are possible signs. Only an examination can tell for sure.
Everyday care and prevention
A cavity is the gradual destruction of the tooth caused by the acids that plaque bacteria produce when sugars are present. It starts in the enamel, often without symptoms, then progresses towards the dentine and possibly the nerve.
Several signs can alert you: brief sensitivity to sweet things, cold or heat, a brown or black mark, a small hole, a tooth that feels rough under the tongue, or food that always gets stuck in the same place.
Some cavities develop between the teeth or under an old filling, where they cannot be seen. That is why the dentist often completes the examination with X-rays.
The earlier a cavity is treated, the simpler and more conservative the treatment. A cavity that reaches the nerve may require root canal treatment. A regular check-up remains the most reliable way to catch it in time.
This is a general answer. Only a consultation at the practice can tell what suits your situation.