RCaldwell Dentist radicular – refers to tooth rootradiograph – also known as an x-ray, image of bone and tooth structures produced through exposure to ionizing radiationreimplantation – reinsertion of tooth into its socket following trauma that partially or completely removed itreline – resurfacing of the tissue side of a removable denture to correct issue with fitresin – material used in dental restorations and other dental treatmentsresorption – loss of bone or structureretainer – appliance used to ensure teeth do not return to prior misaligned state following orthodontic treatmentroot – portion of the tooth that attaches the tooth into the gums and socketroot canal – pulp cavity inside the tooth rootroot canal therapy – treatment of disease or injury to tooth pulp, generally involves the removal of part or all of the pulp and replacement with inert materialroot planing – procedure used in the treatment of periodontal disease, involves deep cleaning of teeth at the roots to remove calculus and other substancesrubber dam – latex sheet used to isolate part of the mouth from saliva and potential contaminants during surgery