More than 4,000 fans flocked to the Globe Arena to see the home side come back from a goal behind to pick up a vital three points against their old rivals. Dagenham took the lead after six minutes. Matthew Saunders swung in a corner which flew across the Morecambe penalty area before Brian Woodall produced a fine finish to volley past Barry Roche.
Morecambe raised their game in the second half and levelled after 53 minutes with Jordan Burrow scoring his first goal of the season. Lewis Alessandra crossed to the far post and Kevin Ellison headed back into the danger area with Burrow in the right place at the right time to bundle the ball past Chris Lewington from close range.
Gary McDonald saw a close-range volley superbly cleared off the line by Daggers defender Scott Doe before the Shrimps took the lead with 11 minutes to go when Andy Parrish steamed in at the far post to force the ball over the line from close range after a superb run and cross from Alessandra - his first goal in more than 150 appearances for the club.
Bentley said: "It was fantastic to see so many fans here and the lads certainly responded to it. We started off badly by going a goal down early in the game and things went a bit flat but to be fair to the lads they came back fighting and played some great stuff on a difficult pitch.
"There were some great performances and I am delighted Andy Parrish won us the game with his first goal for us which capped everything off.
"We were a bit nervy towards the end of the game but the crowd stayed with us and I am sure they went home happy. Hopefully some of them will come back again and support the club in the next few weeks because it makes a massive difference to a club like ours.''
Dagenham's first-team coach Wayne Burnett admitted his side's recent travelling had taken its toll on his players.
He said: "We have had a busy Christmas and were at Accrington at the weekend and I think the long journeys certainly had an effect. We looked jaded at the end and I think the miles caught up with us.
"We started well and looked comfortable after taking the lead. Our keeper produced a couple of superb saves but they put pressure on us in the second half and despite the best efforts of the lads we couldn't hold on. There was no lack of effort but it was a heavy pitch and it certainly had an effect in the end."