How Heartland Dental, Aspen Dental and Pacific Dental Services compare in 2022:
Heartland Dental (Effingham, Ill.)
Affiliated practices: more than 1,550
Supported dentists: more than 2,300
No. of states: 38
The Aspen Group (Chicago)
Affiliated practices: 1,032
Supported dentists: 1,931
No. of states: 45
Pacific Dental Services (Irvine, Calif.)
Affiliated practices: more than 850
Supported dentists: 2,306
No. of states: 26