title: [Ultrastructural morphological study of supragingival tartar].
abstract: Specimens of old supragingival calculus, collected from 5 patients with periodontitis, were examined electron-microscopically. Both intracellular and extracellular calcification were found. Intracellular calcification began as needle-shaped crystals or minute amorphous deposits within microorganisms. Extracellular calcification originated within the interbacterial matrix.
authors.affiliation: Università degli Studi di Roma La Sapienza.
authors.forename: S
authors.initials: S
authors.lastname: Lo Storto
authors.forename: R
authors.initials: R
authors.lastname: Di Grezia
authors.forename: G
authors.initials: G
authors.lastname: Silvestrini
authors.forename: M
authors.initials: M
authors.lastname: Cattabriga
authors.forename: E
authors.initials: E
authors.lastname: Bonucci
mesh_terms: D003728:Dental Calculus / Q000382:microbiology / Q000648:ultrastructure*; D005881:Gingiva / Q000382:microbiology / Q000648:ultrastructure*; D006801:Humans; D008854:Microscopy, Electron; D010518:Periodontitis / Q000382:microbiology / Q000473:pathology
vernacular_title: Studio morfologico ultrastrutturale di tartaro sopragengivale.