Table 1.

Mean difference in trueness and precision between two different strategies of intraoral digital impression and a new scanning tip.

Trueness (µm)
(I) Model	(J) Model	Mean Difference (I–J)	Std. Error	p-Value	95% Confidence Interval
					Lower Bound	Upper Bound
New tip, suggested strategy	Old tip, suggested strategy	−11.38 *	2.49	0.000	−17.56	−5.19
	Second strategy	−24.61 *	2.49	0.000	−30.79	−18.42
Old tip, suggested strategy	New tip, suggested strategy	11.38 *	2.49	0.000	5.19	17.56
	Second strategy	−13.23 *	2.49	0.000	−19.41	−7.04
Second strategy	New tip, suggested strategy	24.61 *	2.49	0.000	18.42	30.79
	Old tip, suggested strategy	13.23 *	2.49	0.000	7.049	19.41
Precision (µm)
(I) Model	(J) Model	Mean Difference (I–J)	Std. Error	p-Value	95% Confidence Interval
					Lower Bound	Upper Bound
New tip, suggested strategy	Old tip, suggested strategy	−14.77 *	1.80	0.000	−19.04	−10.50
	Second strategy	−23.36 *	1.80	0.000	−27.63	−19.09
Old tip, suggested strategy	New tip, suggested strategy	14.77 *	1.80	0.000	10.50	19.04
	Second strategy	−8.59 *	1.80	0.000	−12.86	−4.31
Second strategy	New tip, suggested strategy	23.36 *	1.80	0.000	19.09	27.63
	Old tip, suggested strategy	8.59 *	1.80	0.000	4.31	12.86

* The mean difference is significant at the 0.05 level.