The Celtics had a one-point lead in the game's early stages when they went on a 14-1 run. The Raptors never recovered and wound up scoring only 29 second-half points.
Boston has won two in a row and six out of seven, moving a game above the .500 mark for the first time since the Celtics were 4-3 on Jan. 4.
Boston made 52 percent of its shots from the field and held Toronto to 34 percent.
The Raptors were led by Jerryd Bayless with 14 points off the bench.
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