Bioinspired design of dental multilayers.
This paper considers the use of bioinspired functionally graded structures in the design of dental multi-layers that are more resistant to sub-surface crack nucleation. Unlike existing dental crown restorations that give rise to high stress concentration, the functionally graded layers (between crown materials and the joins that attach them to dentin) are shown to promote significant reductions in stress and improvements in the critical crack size. Special inspiration is drawn from the low stress concentrations associated with the graded distributions in the dentin-enamel-junction (DEJ). The implications of such functionally graded structures are also discussed for the design of dental restorations.
Huang
M
M
The Princeton Materials Institute and The Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.
Wang
R
R
Thompson
V
V
Rekow
D
D
Soboyejo
W O
WO
D001696:Biomechanical Phenomena; D055592:Biophysical Phenomena; D001703:Biophysics; D003442:Crowns; D003743:Dental Enamel / Q000737:chemistry* / Q000648:ultrastructure; D003764:Dental Materials; D003799:Dental Stress Analysis; D003804:Dentin / Q000737:chemistry* / Q000648:ultrastructure; D020342:Finite Element Analysis; D006244:Hardness; D006245:Hardness Tests; D008954:Models, Biological; D013314:Stress, Mechanical; D013499:Surface Properties; D014082:Tooth Fractures
D003764:Dental Materials