Avery Bradley scored a season-high 24 points to lead seven players in double figures as Boston rolled over visiting Orlando for its fourth consecutive victory.
Jordan Crawford recorded 16 points and 10 assists for the Celtics, who have beaten the Magic 10 straight times - two in the last four days.
Rookie Kelly Olynyk and Jeff Green added 16 points apiece and Jared Sullinger had 14 for Boston, which shot 60 percent from the field.
Arron Afflalo led the way with 18 points and Nikola Vucevic registered his fifth double-double of the season with 15 points and 10 rebounds for Orlando. Rookie Victor Oladipo chipped in with 17 points for the Magic, who fell to 0-4 on the road.
Orlando led by two before Crawford scored four of his 12 first-half points to ignite a 12-4 run as the Celtics built a 31-25 edge after one quarter.
Bradley had 10 points and Boston shot 62.5 percent from the field in the opening half, scoring 12 off eight Orlando turnovers to take a 59-50 lead at intermission. Vucevic scored seven points early in the second half to pull the Magic within three, but Bradley scored eight during a 10-2 run that pushed Boston's lead back to double digits. Olynyk and Lee drained 3-pointers to help give the Celtics an 87-74 lead after three quarters and Boston cruised after scoring seven of the first nine in the fourth.
GAME NOTEBOOK: Boston, which started the season with four straight losses, forced 19 turnovers and scored 20 fast-break points to four for Orlando - none in the first half. ... Crawford is 14-of-14 from the free-throw line on the season after making both tries Monday. ... The Magic have made at least one 3-pointer in 500 consecutive games after draining 7-of-18 against the Celtics.