Are dark spots on teeth always cavities?

Don't panic about it. It could just be simple staining from food. Go visit a local dentist this weekend and get a quick checkup done so you can stop worrying.

I noticed a dark spot last month and went to a dental hospital. The doctor clearly explained it was just a surface stain and did a quick scaling. Definitely go ask your dentist directly.

It could be a simple stain which a basic cleaning can fix for a few hundred rupees. Don't delay it, because if it actually is a cavity, a filling now will cost much less than a root canal later.

Nope, not always! Sometimes it is just coffee stains from all those late-night mugs. Just get it checked by a dentist to be sure and keep smiling.

Please get it checked immediately. I ignored a tiny black spot on my molar for a year thinking it was just a tea stain, and ended up needing a painful and expensive root canal treatment.

My grandmother told me to just rub salt on it, but I preferred seeing a professional. The dentist confirmed it was a minor cavity and filled it quickly. I highly recommend getting a proper consultation.

It is impossible to diagnose this at home. It could be calculus, tartar, or actual decay. A dentist's professional opinion is the safest and most reliable way to find out.