Bruce claims Bent has now been injured three times on international duty in the last year and he is doubtful for Monday night's trip to Blackburn with the groin injury which ruled him out of Tuesday's draw with Montenegro.
'If the game was on Saturday he would have no chance but as it is Monday, maybe,' said Bruce.
Bad news: Darren Bent missed out on the clash against Montenegro
Even with new record signing Asamoah Gyan closer to full fitness, the Sunderland boss is unhappy with the England staff.
Bruce said: 'I know (Bent) is hugely disappointed because it could have been his night. It could have kick-started his England career.
'I am going to err on the side of caution because it is not often he misses a training session and the scan has shown something in his groin. If it happens once, fine, these things happen. But if it has happened two or three times he has been away with England then that is not healthy.'
Bent misses big chance after injury rules him out of clash with MontenegroBuoyant Bent craves a starting spot after opening his England accountEngland 0 Montenegro 0: Rooney fails to spark as stars fall short at WembleySUNDERLAND FC