Pierce County offers a choice of two dental plans for eligible employees and their dependents. Employees may elect the Delta Dental of Washington - PPO/Incentive plan or the Willamette Dental - HMO plan. Both dental plans provide preventive and maintenance services as well as orthodontia care for children and adults. The County pays the full premium for full-time employees and their dependents. Part-time employees pay a pro-rate portion of the County paid premium.