|
Sign In to gain access to subscriptions and/or personal tools.
|
Fracture Properties of Human Teeth in Proximity to the Dentinoenamel Junction
S.T. Rasmussen
Case Western Reserve University School of Dentistry, Cleveland, Ohio 44106
Under conditions of controlled failure, the fracture properties of dentin at and in proximity to the dentinoenamel junction (DEJ) were studied with a work-of-fracture (Wf) technique and by scanning electron microscropy (SEM). In 37°C distilled water, fracture of normal human teeth at the DEJ was a difficult failure mode to investigate. Even with high stress concentration at the DEJ, only a few specimens showed apparent DEJ failure at localized regions. SEM fractography of these localized regions revealed surfaces similar in some respects to surfaces found in other studies of the DEJ of diseased teeth and decalcified or desiccated teeth. SEM fractographs varied depending upon the distance of the fractured surface from the DEJ. The results of this research suggest that the work of fracture of dentin increases for failure in the near vicinity of the DEJ, probably reaching a maximum at the DEJ.
REFERENCES
- Avery, J.K. (1980): Dentin. In; Orban's Oral Histology and Embryology, 9th ed., S.N, Bhaskar, Ed. St. Louis, MO: C.V. Mosby Co., pp. 107-140.
- Bradford, E.W. (1967): Microanatomy and Histochemistry of Dentin. In: Structural and Chemical Organization of Teeth, Vol. 2, A.E.W. Miles, Ed. New York, NY; Academic Press, Inc., pp. 3-34.
- Hassan, R.; Caputo, A.A.; and Bunshah, R.F. (1981): Fracture Toughness of Human Enamel, J Dent Res 60:820-827.[Abstract/Free Full Text]
- Lustmann, J. (1978): Dentinoenamel Junction Area in Primary Teeth Affected by Marquio's Syndrome, J Dent Res 57:475-479.[Abstract/Free Full Text]
- Piekarski, K. (1970): Fracture of Bone, J Appl Phys 41:215-233.[CrossRef]
- Rasmussen, S.T. (1978): Fracture Studies of Adhesion, J Dent Res 57:11-20.[Abstract/Free Full Text]
- Rasmussen, S.T. and Patchin, R.E. (1984): Fracture Properties of Human Enamel and Dentin in an Aqueous Environment, J Dent Res (in press).
- Rasmussen, S.T.; Patchin, R.E.; Scott, D.B.; and Heuer, A.H. (1976): Fracture Properties of Human Enamel and Dentin, J Dent Res 55:154-164.[Abstract/Free Full Text]
- Sela, J.; Sela, M.; Lustmann, J.; and Ulmansky, M. (1975): Dentinocnaniel Junction Area of a Resorbing Permanent Incisor Studied by Means of Scanning Electron Microscopy, J Dent Res 54:110-113.[Abstract/Free Full Text]
- Tattersall, H.G. and Tappin, G. (1966): The Work of Fracture and Its Measurement in Metals, Ceramics and Other Materials, J Mat Sci 1:296-301.[CrossRef]
- Whittaker, D.K. (1978): The Enamel-Dentin Junction of Human and Macaca irus Teeth: A Light and Electron Microscopic Study, J Anat 125:323-335.[Medline]
[Order article via Infotrieve]
Journal of Dental Research, Vol. 63, No. 11,
1279-1283 (1984)
DOI: 10.1177/00220345840630110501
 CiteULike  Complore  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter What's this?
This article has been cited by other articles:
|
|
|
|
 
S. N. White, M. L. Paine, A. Y. W. Ngan, V. G. Miklus, W. Luo, H. Wang, and M. L. Snead
Ectopic Expression of Dentin Sialoprotein during Amelogenesis Hardens Bulk Enamel
J. Biol. Chem.,
February 23, 2007;
282(8):
5340 - 5345.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J.H. Kinney, S.J. Marshall, and G.W. Marshall
THE MECHANICAL PROPERTIES OF HUMAN DENTIN: A CRITICAL REVIEW AND RE-EVALUATION OF THE DENTAL LITERATURE
Critical Reviews in Oral Biology & Medicine,
January 1, 2003;
14(1):
13 - 29.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
H.H.K. Xu, D.T. Smith, S. Jahanmir, E. Romberg, J.R. Kelly, V.P. Thompson, and E.D. Rekow
Indentation Damage and Mechanical Properties of Human Enamel and Dentin
Journal of Dental Research,
March 1, 1998;
77(3):
472 - 480.
[Abstract]
[PDF]
|
|
|
|
|
|
|
C.P. Lin and W.H. Douglas
Structure-Property Relations and Crack Resistance at the Bovine Dentin-Enamel Junction
Journal of Dental Research,
May 1, 1994;
73(5):
1072 - 1078.
[Abstract]
[PDF]
|
|
|
|
|
