Surface roughness and oxygen inhibited layer control in bulk-fill and conventional nanohybrid resin composites with and without polishing: in vitro study

Table 2 Descriptive values of surface roughness before and after polishing of bulk fill and conventional nanohybrid resin composites, with and without oxygen inhibition layer control

Polish	Resin composite	n	Mean	SD	Median	IQR	Minimum	Maximum
Before	TNC-BF(G)	10	0.750	0.380	0.547	0.692	0.403	1.441
	TNC-BF	10	0.661	0.482	0.503	0.740	0.120	1.498
	TNC-CN (G)	10	0.574	0.342	0.466	0.477	0.264	1.288
	TNC-CN	10	0.549	0.315	0.581	0.572	0.112	1.056
	O-BF (G)	10	0.383	0.186	0.374	0.332	0.113	0.629
	O-BF	10	0.740	0.431	0.669	0.830	0.085	1.340
	O-CN (G)	10	0.651	0.524	0.514	0.483	0.155	1.899
	O-CN	10	0.430	0.177	0.442	0.285	0.144	0.725
	F-BF (G)	10	0.556	0.233	0.462	0.267	0.364	1.038
	F-BF	10	0.749	0.433	0.660	0.711	0.294	1.555
	F-CN (G)	10	0.681	0.180	0.737	0.273	0.370	0.852
	F-NC	10	0.575	0.330	0.500	0.394	0.163	1.322
After	TNC-BF(G)	10	0.261	0.264	0.159	0.339	0.033	0.751
	TNC-BF	10	0.299	0.159	0.243	0.209	0.084	0.618
	TNC-CN (G)	10	0.279	0.341	0.145	0.414	0.021	1.004
	TNC-CN	10	0.097	0.099	0.074	0.138	0.017	0.328
	O-BF (G)	10	0.213	0.214	0.137	0.353	0.014	0.568
	O-BF	10	0.223	0.216	0.133	0.338	0.036	0.608
	O-CN (G)	10	0.262	0.408	0.119	0.256	0.016	1.377
	O-CN	10	0.134	0.161	0.069	0.162	0.015	0.506
	F-BF (G)	10	0.422	0.231	0.352	0.327	0.180	0.875
	F-BF	10	0.580	0.398	0.497	0.746	0.119	1.304
	F-CN (G)	10	0.261	0.163	0.195	0.244	0.015	0.540
	F-CN	10	0.286	0.263	0.199	0.289	0.046	0.907

n Sample, SD Standard deviation, IQR Interquartile range, F-BF Filtek Bulk Fill, F-CN Filtek Z250-XT, TNC-BF Tetric N-Ceram Bulk-fill, TNC-CN Tetric N-Ceram y, O-BF Opus Bulk Fill APS, O-CN Opallis EA2, CN Conventional Nanohybrid, (G) With oxygen inhibited layer control

ISSN: 1472-6831