Barca suffered their worst ever European defeat over two legs in the last-four clash against the German champions but were missing their Argentine World Player of the Year Lionel Messi for the 3-0 second leg defeat at the Nou Camp.
Top scorer in Europe's elite club competition the past four seasons, Messi had not recovered sufficiently after straining a hamstring last month and had to watch from the bench as Bayern ended Barca's 21-match unbeaten run at home in continental competition.
"I don't think we need to change any players," a subdued Vilanova told a news conference.
"What we do need is to get our injured players back because they are top performers," he added.
"Bayern Munich came here with all their players available but we are here without some of our key players. I still think our squad is very good.
"I am convinced that if we had been at 100 percent we would have competed in a different way."
Messi picked up his injury in last month's quarter-final first leg at Paris Saint-Germain.
Vilanova said Messi had felt a "strange sensation" towards the end of the Bilbao game, when he came on as a substitute with half an hour remaining and scored one of Barca's goals.
"I spoke with Leo yesterday and he trained but didn't feel good at all. We waited until after today's training session and I also spoke with the physios.
"We then decided that there was a risk he could aggravate his injury and he wasn't in a position to help the team.
"Given the result from the first leg it was better to leave him initially on the bench. When a player has a problem he can't play and that's that."
