. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: Dent Mater. 2012 Jul 13;28(10):1071–1079. doi: 10.1016/j.dental.2012.06.007

Table 1.

Values of volumetric shrinkage (%) for the Bis-GMA/TEGDMA dental composites containing varied mass fractions of silanized HNTs.

Percentage of HNTs in dental composite^*	1^st measurement	2^nd measurement	3^rd measurement	Average^**	SD
0%	2.871	2.417	2.591	2.626^b	0.187
1%	3.151	2.904	3.163	3.073^b	0.119
2.5%	3.495	3.559	3.006	3.353^b	0.247
5%	4.629	4.842	4.950	4.807^a	0.133

Each dental composite had the total filler mass fraction of 70%. The filler was either the conventional dental glass powder (V-117-2707) alone or the combination with silanized HNTs.

^**

Lowercase letters indicate statistical differences (p < 0.05).