has part has part characteristic of part of inheres in part of has modifier Abnormality of dental structure Abnormal cementum morphology 2011-06-06T01:33:28Z UMLS:C4021987 Abnormality of the cementum HP:0100717 Any structural anomaly of the cementum, which is the mineralized connective tissue covering the dental root. The cementum allows anchoring of the fibers of the periodontal ligament. Cementum is secreted by cementoblasts, which may be, later on, embedded in the cementum. Cementum can be acellular (along the two third coronal portion of the root) and cellular (in the apical and interradicular part of the root). Abnormal odontoid tissue morphology morphology abnormal cementum