The apparent heats of wetting (ΔHW) and heats of reaction (ΔHR) of ground dentin, enamel, anorganic tooth, and synthetic fluorapatite of known specific surface were determined calorimetrically. Values of ΔHW in water were affected by the presence of collagenous matter. Reactions at the surface were caused mainly by organic groups, since the ΔHR values for anorganic tooth, enamel, and fluorapatite were much smaller when exposed to reagents.
Get full access to this article
View all access options for this article.
References
1.
Zettlemoyer, A.C.: "Surface Properties and Surfactant Behavior from Heats of Immersion and Adsorption Measurements," in Phillips, R.W., and Ryge, G. (eds.): Adhesive Restorative Dental Materials, Indiana University Medical Center Workshop, sponsored by National Institutes of Health and US Public Health Service, 1961, pp 95-102.
2.
Brauer, G.M.: "Measurement of the Surface Area and the Heats of Wetting of Dentin Powders," in Adhesive Restorative Dental Materials 11, University of Virginia Workshop , Public Health Service Publication no. 1494, 1966, pp 203-211.
3.
Peckman, S.C.; Losee, F.L.; and Ettle-Man, I.: Ethylenediamine vs KOH-Glycol in the Removal of the Organic Matter of Dentin , J Dent Res35:1947-1949, 1956 . 4. Egan, E.P. ; Wakefield, Z.T.; and Kelly, L.E.: Thermodynamic Properties of Fluorapatite, 15 to 1600°K. J Amer Chem Soc73:5581-5582, 1951.
4.
Winchell, A.N., and Winchell, H.: The Microscopical Characters of Artificial Solid Substances, New York: Academic Press, 1964, p 203.
5.
Sunner, S., and Wadsö, I.: On the Design and Efficiency of Isothermal Reaction Calorimeters, Acta Chem Scand13:97-108, 1959.
Parker, V.B.: Thermal Properties of Aqueous Uni-Univalent Electrolytes, National Standard Reference Data Series, Washington, DC: National Government Printing Office, 1965, p 63.
8.
Brunauer, S. ; Emmett, P.H.; and Teller, E.: Adsorption of Gases in Multimolecular Layers , J Amer Chem Soc60:309-319, 1938.
9.
Harkins, W.D. , and Jura, S.: An Absolute Method for the Determination of the Area of a Finely Divided Crystalline Solid, J Amer Chem Soc66:1362-1366, 1944.
10.
Randall, J.T.; Brown, G.L.; Jackson, S.F.; Kelly, F.C.; North, A.T.; Seeds, W.E.; and Wilkinson, G.R.: "Some Physical and Chemical Properties of Extracted Skin Collagen," in Randall, J.T. (ed.): Nature and Structure of Collagen, New York: Academic Press, Inc., 1953, pp 213-222.
11.
Stack, M.V.: Properties of Dentin Collagen, in Randall, J.T. (ed.): Nature and Structure of Collagen, New York: Academic Press, Inc., 1953, pp 124-128.
12.
Greg, S.J.: The Surface Chemistry of Solids, ed 2, New York: Reinhold Publishing Corp., 1961, p 278.
13.
Muhler, J.C. ; Boyd, T.M.; and Van Huy-Sen , G.: Effect of Fluorides and Other Compounds on the Solubility of Enamel, Dentin, and Tricalcium Phosphate in Dilute Acids, J Dent Res29:182-193, 1950.
14.
Harkins, W.D. , and Boyd, G.E.: The Binding Energy Between a Crystalline Solid and a Liquid: The Energy of Adhesion and Immersion. Energy of Immersion of Crystalline Powders, J Amer Chem Soc64 :1195-1204, 1942.
15.
Rowen, J.W. , and Blaine, R.L.: Sorption of Nitrogen and Water Vapor onTextile Fibers, Indust Eng Chem39:1659-1663, 1947.
16.
Jura, G.: The Determination of the Area of the Surfaces of Solids, Physical Methods in Chemical Analysis II, W. G. Berl (ed.) New York: Academic Press, Inc., 1951, pp 255-301.
17.
Adamson, A.W. : Physical Chemistry of Surfaces, New York: Interscience Publishers, Inc., 1960, p 439.
