Table 1.

Comparison of physical and mechanical properties of Z350XT composite resin with other composite resin

	Level	Filtek™ Z350 XT Universal Restorative (DEB shades)	Filtek™ Z350 XT Universal Restorative (T shades)	Filtek™ Supreme XT Universal Restorative (DEB shades)	CeramX™ Mono	Durafill® VS	Estelite® Sigma Quick	EsthetX® HD	Gradia® Direct	Grandio®	Herculite ® XRV Ultra™	Premise™
Compressive Strength	Mpa	370.56	394.01	361.37	346.8	349.86	364.19	376.83	323.4	341.84	349.1	370.81
	StDev	15.13	25.05	23.78	22.96	10.4	14.03	35.41	7.92	16.04	23.51	18.83
Diametral Tensile Strength	Mpa	86.12	90.64	85.53	63.31	55.89	77.56	73.64	52.82	81.28	80.65	65.89
	StDev	3.91	1.4	5.47	6.49	2.87	2.98	2.38	5.89	5.63	5.76	8.18
Flexural Strength	Mpa	165.14	157.98	165.9	113.68	64.5	111.08	132.9	106.07	144.03	106.48	108.64
	StDev	13.59	8.16	5.4	11.52	3.62	3.94	8.65	6.77	17.54	14.34	9.64
Flexural Modulus	Mpa	11348.00	9180.00	11436.00	8830.00	2613.00	7552.00	10128.00	6299.00	19437.00	7679.00	7839.00
	StDev	271.00	431.00	442.00	379.00	66.00	202.00	146.00	185.00	299.00	541.00	183.00
Fracture Toughness	K1c	1.84	1.51	1.92	1.69	1.01	-	1.70	1.05	1.68	-	1.81
	StDev	0.19	0.02	0.21	0.05	0.09	-	0.12	0.06	0.07	-	0.03
Shrinkage	%	1.97	2.48	2.06	1.97	2.00	1.80	2.58	1.92	1.69	2.70	1.66
	StDev	0.03	0.06	0.06	0.05	0.08	0.05	0.05	0.04	0.04	0.07	0.06
Polish Retention
Initial	Mean	94.83	93.83	92.81	72.9	86.33	93.93	92.45	76.17	67.27	89.67	91.6
	StDev	1.03	1.39	2.35	-	0.15	0.68	2.33	0.32	1.71	2.17	0.96
500 cycles	Mean	86.82	88.04	83.09	36.03	74.82	67.62	54.75	37.98	43.47	69.63	70.36
	StDev	5.77	6.01	6.08	7.27	4.85	7.45	3.86	10.27	4.82	9.21	5.97
1000 cycles	Mean	83.32	85.72	78.73	25.5	68.08	64.14	27.65	21.58	35.31	60.83	63.11
	StDev	5.96	5.6	7.69	6.39	5.67	3.75	1.03	12.86	6.34	7.29	5.81
2000 cycles	Mean	76.55	82.83	69.74	23.18	59.03	63.55	25.05	13.53	20.79	54.89	49.35
	StDev	6.43	5.12	8.57	2.74	6.15	3.88	2.64	5	3.29	6.85	8.48
3000 cycles	Mean	73.19	82.01	62.89	10.45	58.7	64.29	29.28	13	17.26	52.57	44.12
	StDev	5.99	5.96	8.69	1.37	3.38	9.89	2.59	0.81	2.81	11.34	4.93
4000 cycles	Mean	70.33	81.23	56.63	9.8	55.67	62.35	26.78	10.47	13.13	53.71	39.29
	StDev	5.52	4.15	7.28	1.23	6.57	3.66	6.12	0.89	1.33	5.48	6.97
5000 cycles	Mean	69.66	79.8	53.48	9.55	54.02	63.6	28.68	11.77	12.16	52.84	39.26
	StDev	5.36	6.05	8.19	1	3.57	9.53	0.65	1.16	0.96	11.58	3.12
6000 cycles	Mean	68.62	79.72	54.73	7.98	53.21	65.01	27.65	10.55	11.48	54.88	37.18
	StDev	4.77	4.42	7.75	0.71	6.32	3.33	1.01	1.22	0.98	4.57	5
3-Body Wear Rate	um lost	5.61	6.54	5.07	32.04	15.22	7.5	7.38	15.17	8.49	15.78	16.27
	StDev	0.63	0.5	0.8	0.68	0.55	0.46	0.31	1.43	0.64	2.13	0.55