Chemical and crystallographic analysis of random samples of dental calculi and dentin obtained from 19 patients showed structural identity or close similarity to the "octa-phosphate" hydroxyapatite crystalline pattern. The organic and inorganic content and composition of the dental calculi were similar.
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References
1.
Hodge, H.C., and Leung,S. Wah: Calculus Formation, J Periodont21:211-221, 1950.
2.
Moore, B.: The Physiological and Pathological Metabolism of Calcium and Phosphates in Relationship to the Deposition of Insoluble Salts in Formation of Bones , Teeth, and Calculi, Brit Dent J31:825-831, 1910.
3.
Rapp, G.W.: The Biochemistry of Oral Calculus: I. Conditions Predisposing to Oral Calculus Deposition, JADA32 :1368-1372, 1945 .
4.
Fosdick, L.S. , and Starke, A.C. JR.: Solubility of Tooth Enamel in Saliva at Various pH Levels, J Dent Res18:417-430, 1939.
5.
Karshan, M., and Schroff, J.: Composition of Some Salivary Calculi, J Dent Res8:454-455, 1928.
6.
Ericsson, Y. : Enamel-Apatite Solubility: Investigations into the Calcium Phosphate Equilibrium between Enamel and Saliva and Its Relation to Dental Caries, Acta Odont Scand8(suppl 3):11-139, 1949.
7.
Brandenberger, E.: Der Aufbau Pflanzlicher, Tierischer und Menschlicher Verkalkungen im Lichte der Rontgenographischen Kristallstrukturuntersuchung , Vierteljahs Naturforsch Ges90:250-259, 1945.
8.
Trömel, G., and Moller, H.: Die Bildung Schwer Loslicher Calcium-phosphate aus wa(B) Riger Losung und die Beziehungen Dieser Phosphate zur Apat Gruppe, Z Anorg Allgen Chem206:227-240, 1932.
9.
Weber, J.C., Eanes, E.D.; and Gerdes, R.J.: Electron Microscope Study of Non-crystalline Calcium Phosphate, Arch Biochem120:723-724, 1967.
10.
Karlström, S., and Miller, E.G.: Factors in the Formation of Salivary Calculus , J Dent Res8:452-454, 1928.
11.
Glock, G.E. , and Murray, M.H.Chemical Investigation of Salivary Calculus , J Dent Res17:257-264, 1938.
12.
Williams, J.B. , and Irvine, J.W., JR.: Preparation of the Inorganic Matrix of Bone, Science119:771-772, 1954.
13.
Wheeler, T.E. , and Hyatt, G.W.: A Study of the Residual Nitrogen in Bone Following Extraction with Ethylenediamine, J Bone Joint Surg42A:1435-1441, 1960.
14.
Patterson, S.S.: In Vivo and in Vitro Studies of the Effect of the Di-sodium Salt of Ethylenediamine Tetra-acetate on Human Dentine and Its Endodontic Implications, Oral Surg16:83-103, 1963.
15.
Clark, E.P. , and Collip, J.B.: A study of the Tisdall Method for the Determination of Blood Serum Calcium with a Suggested Modification , J Biol Chem63 :461-464, 1925.
16.
Fiske, C.H. , and Subbarow, Y.: Colorimetric Determination of Phosphorus , J Biol Chem6:375-400, 1925.
17.
Schmidt-Nielsen, B.: Microdetermination of pH in Saliva, Acta Physiol Scand1 :97-103, 1946.
18.
Welsberg,Harry F.: Water, Electrolyte and Acid-Base Balance, 2nd ed Baltimore: Williams & Wilkins Co. , 1962, p 96.
19.
Posner, A.S. ; Stutman, J.M.; and Lippin-Cott , E.R.: Hydrogen-Bonding in Calcium-deficient Hydroxyapatites, Nature188 :486-487, 1960.
20.
Posner, A.S. : The Structure of the Mineral Portion of Teeth , Workshop Proceedings, Adhesive Restorative Dental Materials, National Institute of Dental Research (NIH, USPHS), 1961, pp 15-25.
