Theus, a freshman from Jacksonville, Fla. suffered his injury in the fourth quarter of Saturday's game against Buffalo. Xzavier Ward, a redshirt freshman from Moultrie, Ga., worked in Theus' place on Tuesday.
Sophomore Dantzler, a Dalton native, also injured his ankle against the Bulls.
Referring to his offensive line, offensive coordinator Mike Bobo said, "We're trying to find five right now... Get five healthy ones out there."
Seventh-ranked Georgia slipped a spot from No. 6 last week. The Bulldogs are currently preparing for Saturday's game at Missouri.
Their next test against a ranked opponent will likely not come until Oct. 6, when the Bulldogs travel to South Carolina.