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

Table 8

Analyses of implant stability at abutment connection or prosthetic loading.

Variable	Groups	Implants	ISQ		Significance test
		Placed	Mean	SD
Age	10–19	5	80.6	7.2	^(1)
	20–29	6	77.5	5.4
	30–39	45	75.9	5.2
	40–49	144	74.3	6.8
	50–59	154	75.2	6.4
	60–69	140	74.9	7.0
	70–79	31	76.6	4.4
	80–89	2	77.0	8.5
Gender	Female	322	74.7	6.9	^(2)
	Male	204	75.9	5.7
Jaw	Maxilla	245	74.1	6.6	^(2)
	Mandible	284	76.0	6.3
Position	Anterior	112	74.8	6.6	^(2)
	Posterior	416	75.1	6.5
Indication	Single	78	74.7	7.9	^(1)
	Partial	333	75.0	6.2
	Full	117	75.7	6.2
Bone quantity	A	20	76.7	5.9	^(1)
	B	210	75.1	6.7
	C	279	75.1	6.4
	D	19	73.1	6.5
	E	0	—	—
Bone quality	1	23	76.6	5.6	^(1); Post hoc test^(3): Bone quality 2 ≠ bone quality 3:
	2	284	75.8	6.5
	3	183	74.2	6.2
	4	38	73.5	8.3
Implant diameter	3.5 mm	106	74.1	6.7	^(1); Post hoc test^(3): 3.5 mm ≠ 4.5 mm: 4.0 mm ≠ 4.5 mm:
	4.0 mm	310	74.8	6.4
	4.5 mm	100	76.9	6.5
	5.0 mm	2	77.5	3.5
	5.5 mm	10	77.8	6.2
Implant length	7 mm	25	73.5	6.7	^(1)
	9 mm	144	75.1	6.9
	11 mm	151	75.6	5.9
	13 mm	127	75.0	6.6
	15 mm	76	75.1	6.6
	17 mm	5	70.8	7.5

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