Delta Dental of Colorado, the state’s leading dental benefits provider, has assembled a team of professionals to execute a multifaceted plan to move its offices to Centennial later this year, when its lease ends after 25 years in the same building. The 55,000-square-foot space in Peakview Tower at 6465 Greenwood Plaza Blvd. will accommodate nearly 200 team members who work for the nonprofit organization and related Delta Dental of Colorado Foundation.