Microhardness Studies of Intact Surface Enamel

Head, J. : Modern Dentistry, Philadelphia, 1917, W. B. Saunders Company, pp. 46-54.

Pickerill, H.P. : The Prevention of Dental Caries and Oral Sepsis, ed. 3, London, 1923, Bailliere, Tindall & Cox, pp. 110-112.

Karlstrom, S. : Scleroscopic Investigation of the Enamel of Teeth, Sven. tandläk. tskr. 20: 201, 1927.

Hodge, H.C. , and McKay, H. : The Microhardness of Teeth, J. A. D. A. 20: 227, 1933.

Hodge, H.C. : Hardness Tests on Teeth, J. D. Res. 15: 271, 1936.

Klinger, A. : Studies on Enamel Hardness, D. Record 60: 291, 1940.

Souder, W. , and Schoonover, I.C. : Abrasion and Solution of Teeth, J. A. D. A. 30: 1725, 1943.

Phillips, R.W. , and Swartz, M.L. : Effect of Fluorides on Hardness of Tooth Enamel, J. A. D. A. 37: 1, 1948.

Gustafson, G. , and Kling, 0. : Microhardness Measurements in the Human Dental Enamel, Odontol. tidskr. 56: 23, 1948.

Swartz, M.L. , and Phillips, R.W. : Solubility of Enamel on Areas of Known Hardness, J. D. Res. 31: 293, 1952.

Atkinson, H.F. , and Saunsbury, P. : An Investigation Into the Hardness of Human Enamel, Brit. D. J. 94: 249, 1953.

Sweeney, W.T. : The Knoop Indentation Hardness Instrument as a Tool in Dental Research, J. D. Res. 21: 303, 1942.

Kentron Micro Hardness Tester-Operating Instructions.

Vitovec, F.H. , and Binder, H.F. : The Effect of Surface Preparation and Condition on Microhardness, Technical Report, Wright Air Development Center, pp. 55-372.

Croxton, F.E. : Elementary Statistics With Applications in Medicine, New York, 1953, Prentice-Hall, Inc. , pp. 235-238.