When North Carolina lawmakers talk about expanding Medicaid, they point to Indiana’s plan as one of the examples to emulate. Reginald Rogers owes his dentist a debt of gratitude for his new dentures, but no money. Indiana’s Medicaid program has them covered, a godsend for the almost toothless former steelworker who hasn’t held a steady job for years and lives in his daughter’s basement. “I just need to get my smile back,” Rogers, 59, told his dentist at a clinic here recently. “I can’t get a job unless I can smile.”