Table 4. The mean and standard deviations of absolute marginal discrepancy depending on fabrication system in each finish line configuration (unit: µm).

Fabrication system	Shoulder		Deep chamfer
	Mean	SD	Mean	SD
Prettau®Zirconia	73.9a	32.9	37.8a	37.1
ZENOSTAR®ZR translucent	-14.3b	61.2	-51.3b	66.9
IPS e.max®press	29.4c	19.1	22.5a	20.5

Different superscripted lowercase letters in column indicate significant differences (P<.05).

"-" indicate the under-extended margin.