At the First European Workshop on Periodon
tology, peri-implantitis was defined as an infla
mmatory process affecting the tissues around an
osseointegrated implant in function, resulting in
loss of supporting bone. Peri-implant mucositis
was defined as reversible inflammatory changes of
the peri-implant soft tissues without any bone
loss1). The infectious etiology of peri-implantitis is
evident2). High levels of periodontal pathogens
including Actinobacillus actinomycetemcomitans,
Porphyromonas gingivalis, Porphyromonas
intermedia, Tannerella forsythia and Treponema
denticola, have been associated with periimplantitis
3,4).