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Journal of Dental Research
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Factors Affecting Photopolymerization Stress in Dental Composites

C.S. Pfeifer1,*, J.L. Ferracane2, R.L. Sakaguchi2 and R.R. Braga1

1 Department of Biomaterials and Oral Biochemistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227 São Paulo, SP, Brazil, 09050-150; and
2 Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, Portland, OR, USA


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  		Figure 1. Controlled-compliance apparatus for contraction stress test. Legend: a, steel frame; b, slot for light guide; c, load cell holder; d, steel piston; e, space for specimen; f, glass plate.

 

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  		Figure 2. Correlation plots. (A) Polymerization stress x RPmax (maximum reaction rate). (B) Polymerization stress x RS max (maximum rate of stress development). Each datapoint corresponds to n = 6. The coefficient of variation was less than 10% in all groups.

 

Journal of Dental Research, Vol. 87, No. 11, 1043-1047 (2008)
DOI: 10.1177/154405910808701114
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