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. 2003 Jun 1;108(3):167–182. doi: 10.6028/jres.108.017

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 11 — Mean values and standard deviations (indicated by bars) of the polymerization shrinkage of Bis-GMA-, EBPADMA- or UDMA-based ACP-filled composites (filler loading: 40 % mass fraction; average for u-ACP, Si-ACP and Zr-ACP) compared to TP composites. Number of runs in each experimental group n ≥ 9. The standard deviation is taken as a measure of the standard uncertainty.