Samson Liu

American Dental Association provides information on oral health, promotes dental science, conducts research, development and testing on dental products and materials. Its website provides information on the organization, its history, membership, links to dental organizations, and survey research on dentistry. The ADA was founded by William Henry Atkinson in 1859 and is headquartered in Chicago, IL.

Heartland Dental LLC offers non-clinical administrative support services to dental offices. It provides support through management services, such as staffing, human relations, purchasing, administration, financial, marketing, and information technology support. It also offers dental and business assistance, office management, continuing education, practicing administrator, expanded dental duties and hygienists. The company was founded by Richard E. Workman in 1997 and is headquartered in Effingham, IL.