The Morphology of Peri-Implantitis Bone Defects: A Retrospective Study on Periapical Radiographs

Table 2

Demographic data, patient-related parameters, and implant-related parameters (patient-level and implant-level).

Parameter	Result (patient-level) (n = 27)	Result (implant-level) (n = 73)
Age at surgery (years)	—	56.5 ± 7.84 (24–69)
Sex	M: 13; F: 14	M: 30; F: 43
Smoking
Smokers	12 (44.4%)	32 (43.8%)
Nonsmokers	15 (55.6%)	41 (56.2%)
Diabetes	1 (3.7%)	3 (4.1%)
History of periodontitis	17 (63.0%)	45 (61.6%)
Hygiene level
Good	4 (14.9%)	14 (19.2%)
Fair	12 (44.4%)	22 (45.2%)
Poor	11 (40.7%)	26 (35.6%)
Recall frequency
6 months	15 (55.6%)	43 (58.9%)
4 months	7 (25.9%)	13 (17.8%)
3 months	5 (18.5%)	15 (20.5%)
Implant brand
NobelBiocare™	—	70 (95.9%) (Speedy Groovy™: 55 (75.3%); Replace™: 12 (16.4%); Branemark: 3 (4.1%))
3i	—	3 (4.1%)
Prosthetic rehabilitation
AllOn4®	—	41 (56.2%)
Fixed partial prosthesis	—	23 (31.5%)
Single crown	—	9 (12.3%)
Implant length
13 mm	—	25 (34.2%)
15 mm	—	21 (28.8%)
10 mm	—	14 (19.2%)
11.5 mm	—	12 (16.4%)
8.5 mm	—	1 (1.4%)
Implant diameter
≤3.5 mm	—	8 (10.9%)
>3.5 and <5 mm	—	64 (87.7%)
≥5 mm	—	1 (1.4%)
Prosthetic retention
Screw	—	61 (83.6%)
Cemented	—	11 (15.1%)
Regeneration	—	20 (27.4%)
Implant position
Upper anterior	—	15 (20.6%)
Lower anterior	—	10 (13.7%)
Upper molar and premolar area	—	26 (35.6%)
Lower molar and premolar area	—	22 (30.1%)

Continuous variables are presented in terms of mean ± standard deviation (minimum—maximum). Discrete variables are presented in terms of absolute value (percentage).