Is this a cavity? (Pictures included)

[tiredteeth]

I found this small dark pit/indent on my front tooth near the gum line. It's the size of a needle point in real life. Very small.

No pain or sensitivity.

I don't feel it when I run my tongue over it; I only know that it's pitted/indented by running a dental explorer across the tooth. The explorer dips down and snags on it.

Is this a cavity? And if so, can it still be reversed or halted with great hygiene and a high-fluoride toothpaste like Prevident 5000?

Or is getting it drilled my only option at this point?

 

[Dr M]

Try high fluoride toothpaste first and see if it enlarges or stays the same. If it enlarges over a period of months, you would need to fill it. I think at this stage it is too small to see on an x-ray.