Effects of carrier release kinetics on bone morphogenetic protein-2-induced periodontal regeneration in vivo.

Abstract:

BACKGROUND:Bone morphogenetic proteins (BMPs) have shown considerable promise as a therapeutic agent to enhance periodontal regeneration although the optimal characteristics of a suitable release system are not known. AIM:The aim of this study was to compare the effects of slow and fast degrading gelatin carriers on BMP-2-induced periodontal healing. METHOD:Recombinant human bone morphogenetic protein-2 (rhBMP-2) was incorporated into gelatin and subsequently differentially cross-linked to produce slow and fast release carrier systems. Release kinetics were confirmed in vitro, by measuring release of 125I-growth hormone from similar gelatin plugs. Effects of BMP were evaluated in surgically created rat periodontal fenestration defects which were processed for histology 10 days post-operatively. The rats were divided into 4 groups and the control defects were treated with either slow or fast degrading gelatin (CONs or CONf respectively), whilst test groups were treated with 1.25 microg rhBMP-2 in the slow or fast degrading gelatin (BMPs or BMPf respectively). RESULTS:BMPf greatly increased bone formation compared with the control (CONf) (1.67 +/- 0.65 versus 0.34 +/- 0.11 x 10(-4) m2), but no significant differences were observed with BMPs and CONs. In contrast, new cementum formation was significantly greater in the BMPs group compared with all other groups (p<0.05). CONCLUSION:Release kinetics of BMP may have important effects on the outcome of BMP-induced periodontal regeneration. New bone formation may be affected by rapid-release kinetics although further investigation is necessary to confirm this. In contrast, new cementum formation is promoted by slow release of BMP.

journal_name

J Clin Periodontol

authors

Talwar R,Di Silvio L,Hughes FJ,King GN

doi

10.1034/j.1600-051x.2001.028004340.x

keywords:

subject

Has Abstract

pub_date

2001-04-01 00:00:00

pages

340-7

issue

4

eissn

0303-6979

issn

1600-051X

journal_volume

28

pub_type

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