title: Ultrastructure of sclerotic cemental masses.
abstract: Electron microscopic findings in a focus of early calcification in a case of sclerotic cemental masses of the jaws are described. The lesional cells generally resemble typical collagen-producing cells, except that many contain unusually large numbers of intracytoplasmic actinlike filaments. This and other fine structural features are reminiscent of fibroblasts involved in active tissue repair. These observations suggest that the lesion is basically reactive in its biologic nature. The most characteristic portion of the mineralized component, the rounded calcified globules, ultrastructurally resembles primary cementum.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D003094:Collagen; D003593:Cytoplasm / Q000648:ultrastructure; D003739:Dental Cementum / Q000648:ultrastructure*; D005260:Female; D005347:Fibroblasts / Q000473:pathology; D006801:Humans; D008336:Mandibular Diseases / Q000473:pathology*; D008875:Middle Aged; D012598:Sclerosis / Q000473:pathology
chemical_list: D003094:Collagen