Plano-based DentalOne Partners has been purchased by Mid-Atlantic Dental Partners, the companies announced in an Oct. 21 news release. The Plano company is headquartered at 7160 Dallas Parkway, Ste. 400, Plano. DentalOne is a support organization that provides dental services to roughly 150 affiliated offices in 13 states. The acquisition brings Mid-Atlantic to a total of approximately 240 affiliated offices. 972-755-0800. www.dentalonepartners.com