Noesen gave the Hurricanes a 1-0 lead at 6:34 of the first, tapping in a rebound off a Sebastian Aho redirect on the power play.
"It gives guys confidence when you're killing penalties or you're getting power-play goals," Carolina forward Jordan Martinook said. "It builds momentum too through other parts of the game."
Kotkaniemi made it 2-0 with a power-play goal at 15:55 of the first, corralling a Seth Jarvis wrister that bounced off the end boards and stuffing it past Ullmark with a backhander.
"We're struggling pretty bad right now," Kotkaniemi said. "But the 5-on-5 is kind of working pretty good, so we just need to stick with that and hopefully find the net."
Hurricanes defenseman Jaccob Slavin had a breakaway at 12:30 of the second period, but Ullmark skated out to his own blue line to break up the opportunity.
"We stuck to the game plan," Bruins captain Patrice Bergeron said. "We adjusted a few things, and you know, [Carolina's] a good team. We know them well. We know they play hard and play fast, and it's always a good challenge, so we knew we had our hands full, and it was a great game."
NOTES: Montgomery said Ullmark and forward Craig Smith (upper body) are each day to day, but need to be evaluated further. Ullmark exited at 6:57 of the third after sprawling to take a shot off his glove. Bruins defenseman Connor Clifton fell on top of Ullmark's head when blocking another shot. Smith was injured in the second period and did not return. … Boston is 19-0-0 on home ice since April 16, including the Sanley Cup Playoffs, to mark the sixth instance in NHL history of a team winning as many consecutive home games (regular season or playoffs, spanning seasons or otherwise). … Aho had an assist on Carolina's first goal for his 16th road point of the season, tied with Connor McDavid, Clayton Keller and Sidney Crosby for the League lead. … Each of Noesen's past four goals have come on the power play (dating to March 5, 2020 with the San Jose Sharks), accounting for the only power-play goals of his NHL career. … Pastrnak has a point streak of nine-plus games for the sixth time in his career. Each of the other instances were double-digits, including a personal best 13-game stretch in 2019-20.