Turkoglu, who had the most floor time for the Magic, took 19 points in 41:11 as well as 5 rebounds and 6 assists, meanwhile Mensah-Bonsu got five minutes from the bench.
Jose Calderon had 21 points, and Shawn Marion added 17 points and 15 rebounds for the Raptors, who nearly blew an 11-point lead before holding on to extend their season-high winning streak to five games. Rashard Lewis missed a potential tying 3-pointer with 20 seconds left to seal Toronto's win.
Howard had 30 points and nine rebounds for Orlando (55-19), which fell percentage points behind Boston (57-19) for the East's second seed. The Magic host first-place Cleveland on Friday night in a game that has now lost some of its luster.
Marion had consecutive fast-break dunks, and Calderon hit a 3-pointer after a three-point play to cap a 15-3 run that gave the Raptors an 11-point lead with a minute left in the third quarter. It was the largest lead for either team in an up-and-down game that had 21 lead changes and little defense.
Hedo Turkoglu made a 3-pointer, then converted a three-point play after being fouled by Joey Graham on a driving layup to cut Toronto's lead to 84-81 early in the fourth quarter. But Toronto's 26 made free throws to Orlando's 13 proved too much.
The Raptors shot nearly 70 percent in the opening quarter, making nine of their first 10 shots. The Magic also shot an impressive 55.6 percent, but Andrea Bargnani's 12 points in the period helped put Toronto ahead 32-28.
The scoring would settle in the second.
Neither team could pull away in an up-and-down first half that saw 15 lead changes. The Magic went on a 10-2 run that gave them a 43-40 lead, but it wouldn't last. Anthony Parker hit a 3-pointer in the waning seconds that helped put the Raptors ahead 53-52 at the half.
