Patterson scored 26 and White 24. Tre'Shawn Thurman added 12 points, 10 rebounds and three blocked shots and Tim Smallwood added 12 points off the bench for Omaha (15-8, 7-2).
The Mavericks shot 31-for-62 from the field for 50 percent - upping the average to 63-percent for a stretch of the second half.
Tyler Flack scored a season-high 14 points off the bench, and Shy McClelland also scored 14 in reserve for South Dakota (10-13, 2-7).
Omaha rebounded from a Thursday loss to Summit co-leader South Dakota State and fell earlier in January to co-leader IPFW.
South Dakota State also won on Saturday to remain tied with Omaha atop the Summit League, IPFW plays Sunday.