Juve's 29th win of the campaign left the champions, who secured a record sixth consecutive scudetto with a 3-0 win over Crotone last week and face Real Madrid in the June 3 Champions League final, top of the pile seven points ahead of second-placed Roma.
Kean got his head to a free-kick from deep and steered the ball into the net in the fourth minute of added time as Juventus warmed up for next weekend's Champions League final with a hard-fought 2-1 win.
"We won't lack for excitement or energy in Cardiff".
A verbal agreement has been agreed between Kean and Juventus and he would have already made the temporary move had he not scored his first Serie A goal on Saturday. We will go to Cardiff with serenity, which is how finals are won. "We know who we are facing and that we've got the play the same way as our recent Champions League matches".
Kean became the first player born in the year 2000 to score in the top five European leagues. It was really nice, but there is still work to do, because in my mind this is just the beginning. They have always helped me and pushed me to never give up.
"I dedicate my goal to my family, especially to my mother".
Allegri said: "Kean is not the only positive from today, because Emil Audero also played the entire match with great authority in goal and there are other talents from the youth academy that will have room next season. I don't think she'll even believe that I scored a goal!"