TABLE 1.

Baseline data and abutment mechanical complication rate (AF, ASL) of gender, age, arch, position, type of the prosthesis, abutment design, implant length or diameter, bone graft, type of the abutments, and duration time in Ankylos implants (n = 945)

		n (%)	Abutment mechanical complication			p value
			ASL	AF	N (%)
Gender	Male	500 (52.91)	9	11	20 (4.00)	0.006 a
	Female	445 (47.09)	3	2	5 (1.12)
Age	≤50 years	380 (40.21)	12	13	8 (2.11)	0.396 a
	>50 years	565 (59.79)	9	8	17 (3.00)
Arch	Maxillary	477 (50.48)	5	4	9 (1.89)	0.142 a
	Mandible	468 (49.52)	7	9	16 (3.42)
Position	Anterior	197 (20.85)	0	0	0 (0.00)	0.021 a
	Premolar	207 (21.90)	4	1	5 (2.42)
	Molar	541 (57.25)	8	12	20 (3.70)
Type of the prosthesis	ISC	475 (50.26)	5	11	16 (3.37)	0.164 a
	IFDP	470 (49.74)	7	2	9 (1.91)
Cantilever	Yes	19 (2.01)	0	0	0 (0.00)	1.000 b
	No	926 (97.99)	12	13	25 (2.70)
Abutment design	Indexed (/X)	441 (46.67)	4	10	14 (3.17)	0.343 a
	Without index(C/)	504 (53.33)	8	3	11 (2.18)
Abutment angulation	Yes	270 (28.57)	8	2	10 (3.70)	0.200 a
	No	675 (71.43)	4	11	15 (2.22)
Opposing jaw	Natural tooth	806 (85.29)	11	13	24 (2.98)	0.161 b
	Implant tooth	106 (11.22)	0	0	0 (0.00)
	Others	33 (3.49)	1	0	1 (3.03)
Length	8 mm	99 (10.48)	3	4	7 (7.07)	0.038 b
	9.5 mm	232 (24.55)	3	1	4 (1.72)
	11 mm	555 (58.73)	6	8	14 (2.52)
	14 mm	59 (6.24)	0	0	0 (0.00%)
Diameter	3.5 mm	628 (66.46)	6	3	9 (1.43)	0.001 a
	4.5 mm	317 (33.54)	6	10	16 (5.05)
Bone graft	Yes	304 (32.17)	3	1	4 (1.32)	0.079 a
	No	641 (67.83)	9	12	21 (3.28)
Duration time	1–2 years	185 (19.58)	4	1	5 (2.70)
	2–3 years	154 (16.30)	4	3	7 (4.55)	0.276
	3–4 years	161 (17.04)	2	6	8 (4.97)
	4–5 years	124 (13.12)	0	2	2 (1.61)
	>5 years	321 (33.97)	2	1	3 (0.93)

^a Chi‐square test.

^b Fisher's precise test.