Boston, MA (Sports Network) - Ray Allen scored 23 points and keyed a three- point barrage that led to a dominant second half in a 116-89 Celtics victory over the Philadelphia 76ers at TD Banknorth Garden.

Allen hit five of his nine three-point attempts, and Boston shot a season-best 14-for-22 from beyond the arc as a team, en route to its second straight win.

Paul Pierce had 22 points despite sitting for nearly the entire fourth quarter, and Kevin Garnett added 11 points, eight assists and six rebounds as the Celtics outscored Philadelphia 62-32 in the final 24 minutes to recover from a three-point halftime deficit.

Eddie House added 15 points and Tony Allen contributed 12 off the bench.

"They gave us a great shot early," said Ray Allen. "In the first two quarters, I told the guys, this is a four-quarter game. They gave us a strong three quarters, but by the fourth quarter we were just wearing them down and staying true to what we know, and what we do."

Andre Iguodala had a team-high 17 points and six assists for the Sixers, who committed 23 turnovers and shot a dreadful 57.6 percent (19-for-33) from the foul line en route to their eighth loss in the last nine games.

"Yeah, free throw shooting hurt us," said Sixers head coach Maurice Cheeks. "Hurt us bad. Our inability at the end of the half, and each quarter, I thought was huge for us. Our inability to hit foul shots. We could've went in at halftime up nine but we couldn't get more than three points and it ended up being a big turn around."

Andre Miller and Samuel Dalembert scored 12 apiece. Miller handed out seven assists and Dalembert pulled down 10 rebounds for Philadelphia, which snapped a season-worst seven-game losing streak with a 111-107 win in Houston Tuesday.

The Sixers led throughout most of the opening quarter, but Boston closed on a 14-6 burst capped by a House jumper to tie the game at 29 heading to the second. Philadelphia used an 11-0 run to take a 47-36 lead with under seven minutes to go in the half before Boston again surged in the final two minutes to trail just 57-54 at the break, as House again finished off the period with a jumper in transition.

Boston finally regained the lead at 69-68 with just over three minutes remaining in the third. Pierce scored 14 points in the period, and the Celtics led 78-73 going to the fourth.

Ray Allen hit back-to-back threes to give Boston its largest lead to that point, at 86-76 with 10:13 to go in the game.

Philadelphia pulled back within five, at 90-85, with just under seven minutes remaining. But Garnett twice found Leon Powe underneath for dunks that sandwiched a driving bucket by Allen, and when he hit a pull-up jumper with 4:11 on the clock, the lead was stretched to 98-85.

From there, the rout was on, and Boston fired away from three-point range, stretching the lead to 20 and beyond.

"We had 85 points with seven minutes left," said Cheeks. "We ended up with 89, so that shows a lot about their defense."