Implant impression accuracy of parallel and non-parallel implants: a comparative in-vitro analysis of open and closed tray techniques

International Journal of Implant Dentistry

Table 3 Accuracy of open and closed tray impression techniques for both parallel and non-parallel implant systems

Impression technique	Implant system	Angulations	Count	Median	Mean	SD	P value
Open tray	Straumann	Parallel	16	0.017	0.028	0.031	0.926
	Straumann	Non-parallel	16	0.015	0.045	0.054	0.926
	SIC Invent	Parallel	16	0.019	0.040	0.045	0.999
	SIC Invent	Non-parallel	16	0.020	0.034	0.030	0.999
	Osstem	Parallel	16	0.008	0.021	0.038	0.0166^*
	Osstem	Non-parallel	16	0.016	0.037	0.047	0.0166^*
Closed tray	Strauman	Parallel	16	0.015	0.034	0.037	0.196
	Strauman	Non-parallel	16	0.016	0.043	0.045	0.196
	SIC Invent	Parallel	16	0.028	0.040	0.036	0.616
	SIC Invent	Non-parallel	16	0.041	0.053	0.053	0.616
	Osstem	Parallel	16	0.026	0.049	0.052	0.423
	Osstem	Non-parallel	16	0.039	0.075	0.078	0.423