Pj. Mcmillan et al., Variables that influence the relationship between osseointegration and bone adjacent to an implant, INT J O M I, 15(5), 2000, pp. 654-661
Citations number
34
Categorie Soggetti
Dentistry/Oral Surgery & Medicine
Journal title
INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS
It is often assumed that there is a direct relationship between the bone de
nsity adjacent to an implant, as revealed by radiographs, and the percent h
istologic osseointegration. Moreover, the lack of standardized methods for
evaluation of histologic preparations makes it difficult to compare publish
ed studies, especially as little is known about the variables that influenc
e these measurements. In this animal study, computer-assisted lineal analys
is was used to evaluate the effects of subject, tooth position, and implant
surface site on measured bone density and osseointegration in a bone augme
ntation experiment. Three sites-coronal lingual, apical lingual, and apical
facial-were analyzed around each of 6 (3.75 X 8 mm) threaded machined tita
nium implants, as well as the apical facial site of 21 other implants place
d in the mandibular premolar area of 5 dogs. In all sites, a progressive de
crease in bone density was observed from bone adjacent to the implant to th
at at the titanium implant surface. There was an animal effect on osseointe
gration, but there were no differences between the mandibular premolar loca
tions (second, third, and fourth). Most importantly, there were significant
measurable effects attributable to the surface site examined. The need for
carefully standardized histologic evaluations is established.