Don't do it. My sister took up hockey when she was 16 and lost 4 front teeth within 3 months. She's 45 now and just had the second set of replacements...
Of all the hockey injuries, this one rates pretty low for adult beer league if you just wear a cage. Wearing a full face cage reduces the risk of losing teeth to almost 0% chance of happening.
Hockey does have risks of course, but playing in a non checking league takes the risk down to manageable levels in my opinion.
My teeth are already sufficiently bad that I'll likely need implants in the future anyway; I don't want to lose them, but it wouldn't impact my life as negatively as, say, a permanent back or knee injury would.
