So a dentist flushed out the infection and gave him painkillers, and Rosario believes he'll be back on the field soon.
"Before yesterday, [the pain] was like eight of 10," Rosario said. "It's starting to go down."
Rosario, who is hitting .289 with 21 home runs and entered Monday second on the club with 74 RBIs, said it was possible he'd be available to pinch-hit Monday night, but noted that the medication had him woozy and facing fastballs could be hazardous.
"There is nothing as bad as tooth pain, and that's what Wilin is dealing with," Rockies manager Walt Weiss said.
Thomas Harding is a reporter for MLB.com. Read his blog, Hardball in the Rockies, and follow him on Twitter @harding_at_mlb. Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.