Ray Bourque scored two goals and added an assist as Boston beat host Minnesota.
Bourque, a six-year NHL veteran, got his 400th career point on an assist in the first period, then added two goals. Bourque, a defenseman, has scored four goals and assisted on 11 in his last nine games.
Charlie Simmer gave the Bruins a 1-0 lead when he scored his 21st goal of the year at 1:24 of the first period. The North Stars evened the score at 3:37 on a tip-in power play goal by Tony McKegney.
The Bruins went on to score four straight goals. Keith Crowder, Bourque and Rick Middleton got consecutive goals to give Boston a 4-1 first period lead.
North Stars General Manager Lou Nanne was unhappy over a second-period incident in which North Stars goalie Don Beaupre's stick hit Simmer in the mouth, loosening a tooth.
Beaupre said he was just trying to push Simmer out from in front of the net. "I didn't even know I hit him," Beaupre said after the game. "My stick must have come up and hit him, but I wasn't trying to do that."
Referee Kerry Fraser took a videotape of the incident with him after the game and it will be reviewed by the NHL office. Beaupre was suspended for six games in November for striking Buffalo's Ric Seiling in the back of the head.