Selection of 1-mm venting or 2.5-mm screw access holes on implant crowns based on cement extrusion and retention capacity

Table 2 Retentive strength (N) of the anterior and posterior teeth groups with different hole designs

					95% confidence interval for mean
	N	Mean	Std. Dev	Std. Error	Lower Bound	Upper Bound	Min	Max	F	P	Intergroup comparison
Group A (ANH)	9	54.16	6.01	2.00	49.54	58.77	64.20	41.20	14.884		AB: p = 0.413 AC: p < 0.001
Group B (AMH)	9	47.63	13.54	4.51	37.23	58.04	64.80	29.20		p < 0.001	BA: p = 0.413 BC: p = 0.026
Group C (ARH)	9	31.99	7.75	2.58	26.03	37.95	44.40	23.60			CA: p < 0.001 CB: p = 0.026
Group D (PNH)	9	57.84	10.19	3.40	50.01	65.68	70.20	35.40	13.786		DE: p = 0.216 DF: p < 0.001
Group E (PMH)	9	53.22	6.98	2.33	47.86	58.59	61.80	42.60		p < 0.001	ED: p = 0.216 EF: p < 0.001
Group F (PRH)	9	39.48	5.1	1.71	35.54	43.41	47.40	30.60			FD: p < 0.001 FE: p < 0.001

ISSN: 1472-6831