Table 4.

Comparison of precision for the three types of scanners among the six groups.

	Group 1			Group 2			Group 3			Group 4			Group 5			Group 6
	A	B	C	A	B	C	A	B	C	A	B	C	A	B	C	A	B	C
Group 1				–	+	–	–	–	–	–	–	–	–	–	–	+	+	+
Group 2	–	+	–				–	–	–	–	–	+	–	+	–	+	+	+
Group 3	–	–	–	–	–	–				–	–	+	–	–	–	+	+	+
Group 4	–	–	–	–	–	+	–	–	+				–	–	+	+	+	+
Group 5	–	–	–	–	+	–	–	–	–	–	–	+				+	+	+
Group 6	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+

A:TRIOS; B: iTero; C: Omnicam.

+: Statistically significant difference between the two groups.

−: No statistically significant difference between the two groups.