Both suffered injuries during Boston's 4-1 win over the Buffalo Sabres Saturday afternoon at TD Garden.
Daniel Paille (20) struggles to stand after getting knocked to the ice.
"With Bergy it's very minor," said Bruins coach Claude Julien. "With [Paille], I haven't had a chance to talk yet to my trainers or to the doctors, so I'll probably see later on."
Bergeron played two complete periods but did not return for the third period. Paille appeared to suffer his third concussion of the season at 7:17 of the third period, when the Sabres' Jake McCabe hit Paille in front of the Buffalo bench. Paille lay stunned on the ice and stumbled when he tried to get to his feet. McCabe received a five-minute penalty for interference and was given a game misconduct.
"I haven't seen it yet," Julien said. "It happened right in front of their bench in an area where I can't see very well, so I asked one of my coaches. I guess he cut to the middle. I don't know if it was late or what it was, but I can't comment on it because I didn't really see it."
McCabe said after the game he was not trying to injure Paille.
"I wasn't trying to be dirty at all," McCabe said. "I was trying to play hard."
McCabe added, "I haven't seen a replay of it. My intentions were my shoulder to the chest. I don't think I raised my elbow at all.
"I got called for interference but I don't think it was too late. I kept my hands down. It's kind of an unfortunate play. I think his head was down. It's too bad."
Paille has missed nine games this season with a pair of concussions. While there was no immediate update on his status after Saturday's game, Paille's teammates were discouraged.
"It's just sad," said teammate David Krejci. "This time of the year, in the third period, that's just sad. We need a guy like that [healthy]. He's been a big part of the team. He brings so much speed on the fourth line and lots of energy. He's good on the PK, as well, so it's a sad day, not just for him but for us as his teammates. We're going to miss him and hopefully he'll come back soon. It's just sad."
If Paille is sidelined for an extended period of time, it will be a major loss for the Bruins. Boston's fourth line of Paille, Gregory Campbell and Shawn Thornton is crucial to the team's success, and Paille is among one of the best penalty killers for the Bruins.