Haas Dental Associates provides the best pediatric, orthodontic, and general dental health care possible to the children of Greater Derry NH (including Londonderry, Windham, Hampstead, etc.) and throughout Southern NH. Dr. James Haas specializes in pediatric dentistry including operating room sedation dentistry. He is known regionally for his ability to treat children with special physical or mental needs. Dr. Ronald Hrinda has been serving the pediatric orthodontic needs of children and teens in Derry, NH for over 40 years.