My employer dropped dental insurance a few years ago. They never gave me a pay bump to compensate. Now I spend $1,600/year on cleanings for a family of 4. At least it is out of my HSA, so pre-tax.
They likely dropped it due to budget issues, so of course they weren't going to give you a pay bump. If they had dropped it simply because there was no need to give it to you, you'd probably see a pay bump, or at least faster salary growth in future years.