Factors Influencing Resonance Frequency Analysis (RFA) Measurements and 5-Year Survival of Neoss Dental Implants

Table 7

Analyses of implant stability at implant insertion.

Variable	Groups	Implants placed	ISQ		Significance test
			Mean	SD
Age	10–19	7	75.1	6.8	^(1)
	20–29	7	75.7	6.7
	30–39	61	74.2	6.8
	40–49	164	74.4	7.0
	50–59	210	72.9	8.9
	60–69	169	73.2	7.9
	70–79	33	72.6	6.1
	80–89	2	77.0	2.8
Gender	Female	381	72.8	8.1	^(2)
	Male	264	74.7	7.3
Jaw	Maxilla	304	71.3	8.4	^(2)
	Mandible	351	75.5	6.8
Position	Anterior	148	72.3	8.5	^(2)
	Posterior	506	73.9	7.6
Indication	Single	142	73.9	8.3	^(1); Post hoc test^(3) revealed no significant differences between any groups:
	Partial	398	74.0	7.2
	Full	113	71.6	9.2
Bone quantity	A	25	74.1	7.5	^(1)
	B	277	74.0	8.0
	C	325	73.3	7.5
	D	27	70.3	10.3
	E	0	—	—
Bone quality	1	35	76.5	6.4	^(1); Post hoc test^(3): Bone quality 3 ≠ all other groups: Bone quality 4 ≠ all other groups:
	2	354	75.2	7.0
	3	224	72.0	7.0
	4	41	63.8	10.7
Implant diameter	3.5 mm	147	73.1	7.6	^(1); Post hoc test^(3): 4.0 mm ≠ 4.5 mm:
	4.0 mm	373	73.4	7.3
	4.5 mm	117	75.1	8.5
	5.0 mm	2	66.5	19.1
	5.5 mm	15	70.9	12.9
Implant length	7 mm	28	71.0	9.1	^(1)
	9 mm	164	73.8	7.3
	11 mm	186	74.4	6.7
	13 mm	179	73.8	8.1
	15 mm	92	71.5	9.4
	17 mm	5	76.0	6.4

⁽¹⁾Kruskal–Wallis test; ⁽²⁾Mann–Whitney U-test; ⁽³⁾pairwise Mann–Whitney U-tests (Bonferroni-corrected significance levels).