Table 4.

Mean marginal gaps and standard deviations of buccal-lingual and mesial-distal surfaces (separately) at different measurement stages.

Time and method	Area	Group	Mean	SD	Min-max
Before cementation replica	Buccal and lingual	Zr	54.88	±10.35	40.51–73.06
		ZLS	50.51	±9.16	40.51–65.32
	Mesial and distal	Zr	61.77	±7.68	48.61–72.91
		ZLS	57.76	±10.59	40.51–79.79
Before cementation direct view	Buccal and lingual	Zr	50.35	±11.50	32.41–72.91
		ZLS	46.55	±9.47	33.40–64.81
	Mesial and distal	Zr	50.69	±5.60	40.51–57.29
		ZLS	48.88	±9.60	32.41–69.12
After cementation direct view	Buccal and lingual	Zr	63.70	±11.62	47.31–87.76
		ZLS	59.63	±9.21	45.47–77.40
	Mesial and distal	Zr	64.35	±9.57	49.43–89.12
		ZLS	63.39	±11.92	41.79–84.56
After aging direct view	Buccal and lingual	Zr	78.78	±11.06	62.87–101.13
		ZLS	78.74	±10.64	64.45–97.22
	Mesial and distal	Zr	78.26	±10.73	64.91–103.54
		ZLS	82.49	±14.11	57.89–113.42

Zr, zirconia; ZLS, zirconium lithium silicate; SD, standard deviation; Min, minimum; Max, maximum.