title: Comparative study of the composition of primary and secondary dentine.
abstract: There is considerable variation in the composition of primary and secondary dentine. In general, secondary deposits, regardless of type, contain less calcium, phosphorous, and collagenous matrix per unit volume when compared to primary dentine. Fluoride levels show the reverse tendency. These observations suggest a more open, porotic structure for secondary deposits.
authors.affiliation: Department of Operative Dentistry, Newcastle upon Tyne Dental Hospital and School, UK.
authors.forename: P C
authors.initials: PC
authors.lastname: Foreman
authors.forename: J V
authors.initials: JV
authors.lastname: Soames
mesh_terms: D002118:Calcium / Q000032:analysis; D003782:Dental Pulp / Q000032:analysis; D003786:Dental Pulp Cavity / Q000032:analysis; D003804:Dentin / Q000032:analysis*; D003809:Dentin, Secondary / Q000032:analysis*; D005459:Fluorides / Q000032:analysis; D006801:Humans; D006909:Hydroxyproline / Q000032:analysis; D008852:Microradiography; D008859:Microscopy, Polarization; D010758:Phosphorus / Q000032:analysis; D014961:X-Ray Diffraction
chemical_list: D010758:Phosphorus; D005459:Fluorides; D006909:Hydroxyproline; D002118:Calcium