NL10 99 set very wet board multiway

Pacific, $0.05/$0.10 No Limit Hold'em Cash, 9 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

BTN: $8.66 (86.6 bb)
SB: $10.66 (106.6 bb)
Hero (BB): $10.62 (106.2 bb)
UTG+1: $6.09 (60.9 bb)
UTG+2: $16.51 (165.1 bb)
MP1: $33.94 (339.4 bb)
MP2: $11.25 (112.5 bb)
MP3: $13.79 (137.9 bb)
CO: $10.32 (103.2 bb)

Preflop: Hero is BB with 9 9
UTG+1 folds, UTG+2 calls $0.10, MP1 raises to $0.45, MP2 folds, MP3 calls $0.45, CO folds, BTN calls $0.45, SB folds, Hero calls $0.35, UTG+2 calls $0.35

Flop: ($2.30) T 9 8 (5 players)
Hero bets $1.92, UTG+2 folds, MP1 calls $1.92, MP3 folds, BTN raises to $3.84, Hero raises to $10.17, MP1 folds, BTN calls $4.37 and is all-in

Turn: ($20.64) 3 (2 players, 1 is all-in)
River: ($20.64) 2 (2 players, 1 is all-in)

I think on flop I should bet smaller and fold to a raise because there is no possible way that a villain raises me with a worse hand on this board.
What do you guys think ?