Sinus floor elevation using anorganic bovine bone matrix (OsteoGraf/N) with and without autogenous bone: A clinical, histologic, and histomorphometric analysis - Part 2 of an ongoing prospective study
Sj. Froum et al., Sinus floor elevation using anorganic bovine bone matrix (OsteoGraf/N) with and without autogenous bone: A clinical, histologic, and histomorphometric analysis - Part 2 of an ongoing prospective study, INT J PER R, 18(6), 1998, pp. 529-543
Citations number
56
Categorie Soggetti
Dentistry/Oral Surgery & Medicine
Journal title
INTERNATIONAL JOURNAL OF PERIODONTICS & RESTORATIVE DENTISTRY
One of the goals of the sinus elevation procedure is the creation of vital
bone to effect the osseointegration of dental implants placed in the poster
ior maxilla. With this goal in mind, in 1993 the Department of implant Dent
istry at New York University College of Dentistry began a long-term clinica
l, histologic, histomorphometric, and radiographic study of the sinus eleva
tion procedure. The primary parameters included the effects of graft materi
al selection, time allowed for graft maturation and the effect of barrier m
embrane placement on the creation of vital bone in the sinus cavity. The ef
fects of these and other parameters on implant survival rates were also to
be evaluated. This paper reports the data collected on a subgroup of 113 si
nus elevations that used anorganic bovine bone matrix (OsteoGraf/N) alone o
r in combination with autogenous bone and/or demineralized freeze-dried bon
e as a graft material. This is the second in a proposed series of papers th
at will result from this ongoing research project. The results of this stud
y indicate that. OsteoGraf/N appears to be an effective graft material with
a 98.2% implant survival rate to date: vital bone formation increased with
time, vital bone formation increased moderately when demineralized freeze-
dried bone allograft was added and increased substantially when intraoral a
utogenous bone was added or when an expanded polytetrafluoroethylene membra
ne was used: and the increased height achieved by the procedure was stable
over a 3-year period. Because of the high overall implant survival rate, if
was not possible to determine the relationship between vital bone formatio
n or membrane usage and implant survival.