The objective of this study was to retrospectively compare the outcome
s of dental implant treatment with and without antibiotic prophylaxis.
Two groups of patients with edentulous or partially edentulous maxill
as or mandibles (or both) were treated with denial implants. One group
, consisting of 147 patients (790 implants), was given prophylaxis wit
h oral phenoxymethylpenicillin; 1 g of antibiotic was administered 1 h
our preoperatively, and 1 g was administered every 8 hours for 10 days
postoperatively. The other group, consisting of 132 patients (664 imp
lants) was not given any antibiotics preoperatively or postoperatively
. There were no significant differences with respect to early and late
postoperative infections or with respect to implant survival between
the two groups. It appears that antibiotic prophylaxis for routine den
tal implant surgery offers no advantage for the patient.