表 3.

孤立全冠与牙列内全冠预备体局部终止线扫描RMS值比较(n=6)

A comparison of RMS values for different parts of finish lines of the isolated preparation and preparation in the dentition(n=6)

Site	CEREC Omnicam oral scanner					3Shape TRIOS oral scanner
	Preparation in the dentition	Isolated preparation	t	P		Preparation in the dentition	Isolated preparation	t	P
RMS, root mean square.
Mesial/μm	45±9	32±8	2.92	0.04		45±8	32±6	3.30	< 0.05
Distal/μm	63±7	38±3	6.61	0.01		50±10	36±1	3.50	0.04
Buccal/μm	38±3	44±7	-1.49	0.23		33±8	29±5	0.47	0.67
Lingual/μm	40±3	43±3	-2.60	0.08		33±6	40±7	-1.01	0.39