- Preferred Dental is a full-service dental practice offering a complete range of dental services, from routine cleanings to cosmetic and restorative procedures. Our goal is to promote the long term oral health of our patients in Ellicott city, Columbia, MD and the nearby areas. br br Preferred Dental br Address: br 3448 Ellicott Center Dr #105 br Ellicott, Maryland 21043 br Tel No.410) 418-8485 br Business Email Id: preferreddentalllc@gmail.