A Retrospective Analysis of Biological Complications of Dental Implants

Table 2

Characteristics of implants diagnosed with peri-implant mucositis (n = 301).

Implant-, site-, and surgical-related outcomes	N (%) diagnosed peri-implant mucositis	Relative risk (95% CI)	value
Implant system		NA	0.458
Ankylos	48 (38.7)
Xive	66 (39.1)
Friadent	0 (0.0)
Implant shape		1.01 (0.75, 1.35)	1.000
Cylindrical	48 (38.7)
Tapered	66 (38.4)
Implant height (mm)		0.97 (0.72, 1.30)	0.903
<11	72 (38.9)
≥11	43 (37.7)
Implant diameter (mm)		0.95 (0.71, 1.27)	0.722
<4.5	65 (39.4)
≥4.5	50 (37.3)
Implant location		NA	0.308
Anterior maxilla	8 (25.0)
Posterior maxilla	40 (36.7)
Anterior mandible	4 (50.0)
Posterior mandible	63 (41.4)
Implant placement protocol		NA	0.580
Type I	7 (43.8)
Type II	3 (30.0)
Type III	6 (26.1)
Type IV	99 (39.3)
Bone augmentation procedure at the time of implant placement		1.14 (0.78, 1.67)	0.50
Yes	21 (34.4)
No	94 (39.2)
Operator		0.89 (0.66, 1.21)	0.463
Periodontist	76 (39.8)
Oral and maxillofacial surgeon	39 (35.5)
Prosthesis-related outcomes	N (%) diagnosed peri-implant mucositis	Relative risk (95% CI)	value
Type of prosthesis		1.34 (0.89, 2.01)	0.148
Single implant crown	96 (40.3)
Multiple-unit implant-supported prosthesis	19 (30.2)
Superstructure retention		0.91 (0.67, 1.23)	0.538
Screw-retained	40 (35.7)
Cement-retained	71 (39.4)
Number of functional years prior to diagnosis		1.26 (0.95, 1.68)	0.123
<5 years	59 (43.1)
≥5 years	56 (34.1)
Prosthetic complications		0.93 (0.58, 1.50)	0.837
Screw loosening
Yes	11 (40.7)
No	104 (38.0)
Prosthetic complications		1.15 (0.56, 2.40)	0.790
Crown chipping
Yes	5 (33.3)
No	110 (38.5)
Prosthetic complications		1.00 (0.67, 1.48)	1.000
Crown debonding
Yes	18 (38.3)
No	97 (38.2)

CI: confidence interval. Exact chi-square test.