system
Given the following post, respond as if you're commenting on Reddit:
human
[The Boys (show version)] Why does Homelander have fillings in his teeth?

How does an indestructible man get cavities?  And what kind of heavy duty equipment did Vought use to drill his teeth?
gpt
In the comics, Homelander's powers manifested in-womb, and he was superhuman from the moment of birth (>!quite horrifically, as is the rule with Homelander.!<). There would be no way for comics Homelander to develop tooth decay.

In the TV series, it seems that powers don't tend to manifest until puberty; the child with plasma beam vision in the first season was an anomaly, not the rule.

So Homelander was probably born more or less normal, or at least not at the peak of his powers, and Baby Homelander's teeth were just as vulnerable to cavities as any human. It wasn't until he grew older that his powers manifested more completely.