Dalton completed 10-of-15 passes for 81 yards and a score in a 27-17 win at Cleveland Sunday, but left after the first half in favor of Bruce Gradkowski.
"I think the more we allow him to rest, the better he will be for Sunday," Bengals coach Marvin Lewis said of Dalton starting this weekend's contest at Denver.
The Bengals also signed veteran tight end Donald Lee on Wednesday.
Lee, who spent the previous six seasons with the Packers, had 11 catches for 73 yards and three scores in 2010. Over eight years, including two with the Dolphins, Lee has caught 198 passes for 1,875 yards and 19 TDs.
"He's a guy who has been a complementary tight end," Lewis said. "He comes here from the system in Green Bay and with Philly this preseason, which is very similar to this camp. So he can, if need be, give us snaps right away. He's made a lot of plays receiving. He understands protection. He understands his role. So he's an experienced guy who can come in right away and really give us a threat we may have lost when we lost Bo (Scaife, who is on injured reserve)."