MONTREAL -- Brendan Gallagher got his second goal in as many games as the Montreal Canadiens scored three times in the second period for a 3-1 win over the Ottawa Senators on Friday night.
Carey Price made 29 saves and Ryan White and Michael Ryder scored for Montreal, which evened the first-round playoff series at 1-1.
Milan Michalek scored in the second period to draw Ottawa within 2-1.
Ottawa goalie Craig Anderson stopped 31 shots one night after setting a team record for saves in a playoff game. Anderson made 48 saves in the Senators' series-opening 4-2 win on Thursday night in the first postseason meeting ever between the two Canadian teams.
Game 3 is Sunday night in Ottawa.
The Canadiens were missing center Lars Eller, left winger Max Pacioretty and captain Brian Gionta. Forwards Jeff Halpern, Colby Armstrong and Gabriel Dumont were inserted into Montreal's lineup in their place.
Eller suffered a concussion and facial and dental fractures on Thursday night from an open-ice hit by Ottawa defenseman Eric Gryba. Pacioretty and Gionta were sidelined by upper-body injuries.
Gryba received a major penalty for interference and a game misconduct for his hit on Eller. He was suspended by the NHL for two games on Friday.
White created a turnover to open the scoring with an unassisted goal 3:20 into the second period. The Canadiens right winger picked Erik Karlsson's cross-ice backhand pass attempt to defensive partner Marc Methout out of the air and beat Anderson for his first point in nine playoff games.
Gallagher, who scored a power-play goal in his playoff debut on Thursday, made it a 2-0 lead 53 seconds later when he got open at the right side of the net to put home Alex Galchenyuk's centering pass.
Michalek tipped Chris Phillips' shot past Price at 8:21.
Ryder restored Montreal's two-goal lead at 18:57 when he came out from behind the net and found himself open on the left side to beat Anderson.
Price was struck on the mask by teammate Jarred Tinordi's skate in a goal-mouth collision in the second after Gallagher made it 2-0. The Montreal goalie pulled a tooth out as he skated to the bench and handed it to a member of the team's training staff before returning to his net.
Anderson lost a tooth Thursday night when he was struck in the mask by a shot.
NOTES: The Senators followed a first-game win with another in the second just once in 11 opportunities through their first 21 playoff series. Ottawa won three straight games to open the 2007 Eastern Conference final, including the first two games in Buffalo. The Senators, who have never swept a series, beat the Sabres in five games and advanced to their only Stanley Cup final appearance, where they lost in five to Anaheim. ... The last time the Canadiens lost the first two games of a seven-game playoff series at home was in 1992 when they were swept in four by Boston in the Adams Division final. And the last time Montreal lost two straight home games to open a five-game series was against Buffalo in 1983 in an Adams Division semifinal. ... Senators forward Cory Conacher was left out of the lineup. He had one shot in 9:19 of ice time Thursday night. ... Defensemen Patrick Wierchioch and Mike Lundin, and forwards Peter Regin, Jim O'Brien and Mike Hoffman also did not dress for Ottawa. ... The Canadiens did not dress defensemen Davis Drewiske, Tomas Kaberle and Yannick Weber or forward Mike Blunden.