More than likely, probable.

I would also express that I don't believe the current method of diagnosing cavities is good. If a dentist says you need them, get a second opinion. (It's been said that over 50% of dental fillings are unnecessary. I believe it's more like 95%).

Normally, dentists stick a sharp stainless steel "poker" into your tooth enamel. If it seems to "stick" a little, indicating that the enamel is "soft"-er than is should be, they determine that a filling is necessary.

In the process of installing the filling, they drill out large amounts of perfectly good, biocompatible, non-toxic, functional enamel and install a toxic substance in its place. This makes as much sense as injecting yourself with ethylene glycol.

I do see a place for fillings, but only when they are truly necessary to prevent imminent problems. Otherwise, add alkaline foods to your diet including calcium and vitamin D supplements. (Soft enamel is generally a sign of "calcium-stealing" in an acidic body.)

Certain aspects of dentistry are still in the dark ages.