England failed to advance beyond the group stage in India, finishing ninth with six defeats in nine matches.
They begin a four-match T20 series against Pakistan on Wednesday at Headingley, their only preparation before defending the T20 World Cup against Scotland on June 4 at the Kensington Oval in Barbados.
“That pride was obviously dented and it was a really disappointing competition,” Buttler stated.
“But life marches on; it’s a chapter in the book, and there are lessons to be learned, but now we have a new opportunity in a different format.