Journal of the Korean Association of Oral and Maxillofacial Surgeons : eISSN 2234-5930 / pISSN 2234-7550

Table. 2.

Table. 2.

Incidence of screw loosening and fracture

No. of implants (%)
Screw loosening Incidence No 1,789 (92.8)
Yes 139 (7.2)
Frequency Once 108 (77.7)
Twice 20 (14.4)
3 times or more 11 (7.9)
Onset (months since loading) <6 70 (50.4)
6-12 29 (20.9)
12-24 19 (13.7)
≥24 21 (15.1)
Screw fracture Incidence No 1,926 (99.9)
Yes 2 (0.1)
Onset (months since loading) <6 1 (50.0)
≥6 1 (50.0)
Screw fracture after screw loosening No 1 (50.0)
Yes 1 (50.0)
J Korean Assoc Oral Maxillofac Surg 2020;46:133~142
https://doi.org/10.5125/jkaoms.2020.46.2.133
© JKAOMS