Effect of Abutment Geometry and Luting Agents on the Vertical Marginal Discrepancy of Cast Copings on Implant Abutments: An In Vitro Study

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
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 .