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Journal of Dental Research
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Contraction Stress in Dentin Adhesives Bonded to Dentin

M. Hashimoto1,*, A.J. de Gee2, M. Kaga1 and A.J. Feilzer2

1 Division of Pediatric Dentistry, Hokkaido University, Graduate School of Dental Medicine, Kita 13, Nishi 7, Kitaku, Sapporo 060–8586, Hokkaido, Japan; and
2 Department of Dental Materials Science, Academic Center for Dentistry Amsterdam (ACTA), The Netherlands


Figure 1
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Figure 1. Schematic illustration of polymerization contraction stress determination in the tensilometer. The adhesive or adhesive/composite combination was placed between a glass plate of 4-mm thickness and, parallel to it, the pre-treated flat surface of the dentin specimen or sandblasted surface of the steel specimen. The specimens were fixed in a special steel holder and connected to the load cell. The glass plate (of which the surface on the spot for adhesion was sandblasted with Al2O3 and silanized) was mounted to the stationary part of the framework of the tensilometer.

 

Figure 2
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Figure 2. Average contraction stress curves of the 4 adhesives and adhesive/composite combinations between glass and dentin (A,B) and the 4 adhesives between glass and steel (C). With dentin, the number of experiments was n = 12, and with steel, n = 3.

 

Figure 3
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Figure 3. Bar graphs representing the average maximum stress (white bars) and 30 minutes stress values (grey bars) ± SD of the 4 adhesives (A) and adhesive/composite combinations (B) between glass and dentin. n = 12 for each group.

 

Journal of Dental Research, Vol. 85, No. 8, 728-732 (2006)
DOI: 10.1177/154405910608500808


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