[lgieron]

Extended use of earplugs (say every night for a couple years) can be a contributing cause to developing tinnitus.

[driverdan]

Source?

[nordsieck]

https://www.reddit.com/r/tinnitus/comments/34k8si/does_sleep...

It looks like it's not earplugs, but sensory deprivation that can cause tinnitus. If you're listening to a normal volume of noise for at least a few hours a days, it won't be a problem.

[dazc]

Dunno if this is true but if you're already afflicted prolonged use of earplugs will make it a lot worse, in my experience.