The Turin giants' unbeaten home record went up in smoke last weekend as Lazio snatched a 2-1 win, their first defeat in 57 games at the Allianz Stadium secured by substitute Paulo Dybala's 97th-minute penalty miss.
Juve are already five points behind table-toppers Napoli, who have won all eight of their league games this season, and Allegri is keen not to let Maurizio Sarri's men get away.
"We need to recover lost points and stop those in front of us breaking away," Allegri told a news conference.
"We have to work as a team and leave aside the issue of aesthetics or beautiful football, because we need to put some points under our belts."
After his pair of penalty failures, Dybala was subdued against Sporting, but Allegri will keep faith in his number 10.
"Paulo Dybala returned from Argentina and was not in good shape, so he was rested on Saturday," said Allegri.
"He is in good shape, he's able to deal with any issue on or off the field and he will play tomorrow. I said the team was disconnected because it's like when you have a computer and it's not connected to the Internet, it won't go very well. That happens on the field too."
Allegri revealed Blaise Matuidi will miss the trip to Friuli with a muscular problem, with Claudio Marchisio in his squad. Daniele Rugani is set to start in defence.