Table 3.

Mean vertical marginal discrepancy in μm depending on abutment geometry after cementation using different luting agents.

Abutment geometry	Luting agent
	Mean VMD, zinc oxide noneugenol	Mean VMD, glass ionomer	Mean VMD, zinc phosphate	p
Abutment height
Cylindrical 4.0 mm	38.51 ± 5.32∗	33.08 ± 5.38∗	47.81 ± 6.75∗	0.019
Cylindrical 5.5 mm	38.30 ± 6.55	38.06 ± 4.69	64.07 ± 12.94
Cylindrical 7.0 mm	51.21 ± 4.82†	48.06 ± 7.16†	58.73 ± 20.18†
Total	42.67 ± 5.56	39.73 ± 5.74	56.87 ± 13.29
Abutment wall
Cylindrical 4.0 mm	38.51 ± 5.32‡	33.08 ± 5.38‡	47.81 ± 6.75‡	0.032
Hexagonal 4.0 mm	42.98 ± 8.15§	47.70 ± 9.66§	43.75 ± 5.83§
Total	40.74 ± 6.73	40.39 ± 7.52	45.78 ± 6.29

VMD: vertical marginal discrepancy. ^∗, ^†Two-way ANOVA test, post hoc Tukey test. ^‡, ^§Student's t test. ^∗, ^†, ^‡, ^§Different superscript letters in each column indicate statistically significant differences (p < 0.05).