Table 2.

The values of variations between scan data (measured in micrometers).

Value	Trios 5	CEREC	Emerald S	i700
the largest negative deviation	−2000 µm	−2000 µm	−1999 µm	−2000 µm
the largest positive deviation value	2000 µm	2000 µm	2000 µm	2000 µm
Median	11 µm	15 µm	14 µm	6 µm
Average Mean	22 µm	13 µm	29 µm	6 µm
Mean Absolute Deviation (MAD)	112 µm	127 µm	117 µm	114 µm
Root Mean Square Error (RMSE)	165 µm	179 µm	156 µm	174 µm
Standard Deviation (SD)	164 µm	179 µm	153 µm	174 µm
Variance	27 µm	32 µm	23 µm	30 µm
the average of the deviation values’ positive values	126 µm	129 µm	136 µm	117 µm
average of the deviation values’ negative values	−97 µm	−124 µm	−95 µm	−112 µm
(90–10)/2 (Trueness)	168 µm	192 µm	181 µm	161 µm
10% value of deviation values	−141 µm	−189 µm	−146 µm	−154 µm
90% value of deviation values	195 µm	195 µm	216 µm	168 µm
Tolerance	31.00%	26.79%	26.61%	29.11%