“Are fillings stronger than teeth?”

No

No, enamel is the hardest substance in our body

The simple answer is: No, fillings are not stronger than teeth.

Dr. Quincy Attipoe

So, nothing tops well taken care of enamel. It's the hardest substance in the body and its resilience is also due to the fact that live teeth (i.e., no root canal) can flex, somewhat. Having said that, there are now some incredible composite restorations with excellent properties, but NONE of them are as tough and resilient as enamel with no decay. If you are prone to decay (i.e., poor oral hygiene, lower oral pH due to meds or other reasons), then a restoration (filling) is going to be superior to your natural tooth structure because bacteria don't attack restorations, they like teeth/tooth structure. I'm sorry if my answer is confusing, but...it depends on your individual situation.

Hope this helps,

Dr. B