The question is if he is capable of playing this way TT-KK or not? And while being in 3bet pot and even counting him having such a range as well it will be hard to fold for us. For the reason:
Board: 3
7
6
Equity Win Tie
UTG 31.61% 30.80% 0.81% { KK-TT, 77-66, 33 }
UTG+1 68.39% 67.58% 0.81% { AhAs }
As you see we are getting very good odds. Of course we could add 54s or something similar. But is he really Calling that loose? And even then we would be slightly ahead. And I definitely count him as well having the overpairs in his range as well. And while he ain't even fully staked just 76BB I am still consider to go broke. It's really hard to fold the hand without even knowing the opponent being very passive or anything similar.
And 2nd thing his CBet size could easily induce him to Check/Raise with a lot different hands, even with just overcards. For that reason I would definitely continue in this case as well.
Just curious what did he have? A small set as far I do understand?