AK vs. double-paired board

5/10 B&M game. SB is straight-forward, ABC player.

2 early limpers, I raise from the CO with A [img]/images/graemlins/diamond.gif[/img]K [img]/images/graemlins/heart.gif[/img]. Only the SB and the 2 limpers call.

Flop comes 10 [img]/images/graemlins/spade.gif[/img]10 [img]/images/graemlins/heart.gif[/img]3 [img]/images/graemlins/heart.gif[/img]. Checked to me; I bet, SB calls, others fold.

Turn is the 7 [img]/images/graemlins/diamond.gif[/img]. SB checks; I check.

River is the 7 [img]/images/graemlins/club.gif[/img]. SB bets, I call.

Final pot: 7.5 BB.

Despite my turn check, the guy probably isn't tricky enough to bet the river w/o a 10 or a 7. Was the pot worth this river call, or should I have dumped?