M. Quirynen et al., MICROBIAL PENETRATION ALONG THE IMPLANT COMPONENTS OF THE BRANEMARK(R) SYSTEM - AN IN-VITRO STUDY, Clinical oral implants research, 5(4), 1994, pp. 239-244
Citations number
25
Categorie Soggetti
Engineering, Biomedical","Dentistry,Oral Surgery & Medicine
This study examined in vitro the existence of microbial leakage along
the components of the Branemark (R) implant system. Thirty-two implant
/abutment assemblies were installed in a liquid blood medium previousl
y inoculated with oral micro-organisms. To examine the leakage at the
implant-abutment interface, 16 assemblies were partially immersed. The
remaining 16 were completely immersed to observe the leakage at both
the implant-abutment and abutment-prosthesis interface. After 7 days o
f anaerobic incubation, the micro-organisms in the internal part of th
e implants were collected and incubated on blood agar plates in anaero
bic conditions. Micro-organisms were found in the completely immersed
assemblies and at lower numbers in the partially immersed implants, in
dicating that bacterial leakage at both levels seems to exist. Several
penetrating bacteria have been associated with peri-implantitis. The
clinical importance of this bacterial leakage is not yet well understo
od. Although the longevity of the Branemark (R) implants is well docum
ented, this bacterial leakage might play a role in peri-implantitis, b
oth in the etiology as well as in the treatment.