1. Dallas-based Smile Doctors added Grinz Orthodontics, which has three practices in North Carolina, to its network.
2. Miami-based Guardian Dentistry Partners added Oblinger Family Dentistry in Mount Holly, N.C., led by Andrew Oblinger, DDS.
3. Raleigh, N.C.-based DSO Oakpoint hit 40 practices after partnering with a multi-office practice in the state.