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Article (Scientific journals)
Evaluation of a Diphenylphosphorylazide-Crosslinked Collagen Membrane for Guided Bone Regeneration in Mandibular Defects in Rats
Zahedi, Sharam; Legrand, Roman; Brunel, G. et al.
1998In Journal of Periodontology, 69 (11), p. 1238-46
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Abstract :
[en] In the present study, the potential of a diphenylphosphorylazide-crosslinked type I bovine collagen membrane was evaluated in the healing of mandibular bone defects applying the biological concept of guided bone regeneration. The experiment was carried out on 25 Wistar rats. After exposing the mandibular ramus bilaterally, 5 mm diameter full-thickness circular bone defects were surgically created. While the defect on one side was covered by the membrane (experimental), the defect on the other side was left uncovered (control) before closure of the overlying soft tissues. The rats were sacrificed in groups of 5 after 7, 15, 30, 90, and 180 days of healing. Although at early stages of healing similar amounts of bone formation were observed in the experimental and control defects, after 1 month of healing, most of the experimental defects were completely closed with new bone, while in the control defects, only limited amounts of new bone were observed at the rims and in the lingual aspect of the lesions. In the 90- and 180-day animals, all experimental defects were completely closed, while in the control defects, no statistically significant increase in bone regeneration was observed. The increase in percentage of bone regeneration in the experimental defects was statistically significant between the 15-day specimens as compared with the 7-day specimens (P < 0.01) and likewise between 30-day and 15-day specimens (P < 0.001). It can be concluded that a DPPA-crosslinked collagen membrane yields biocompatibility, ad hoc mechanical hindrance, and handling characteristics suitable for guided bone regeneration applications in this experimental model.
Disciplines :
General & internal medicine
Author, co-author :
Zahedi, Sharam ;  Université de Liège - ULiège > Département de science dentaires
Legrand, Roman ;  Université de Liège - ULiège > Services généraux (Faculté de médecine) > Relations académiques et scientifiques (Médecine)
Brunel, G.
Albert, Adelin  ;  Université de Liège - ULiège > Département des sciences de la santé publique > Informatique médicale et biostatistique
Dewé, Walthère ;  Université de Liège - ULiège > Analyse des médicaments
Coumans, Bernard ;  Université de Liège - ULiège > CNCM/ Centre fac. de rech. en neurobiologie cell. et moléc.
Bernard, J. P.
Language :
English
Title :
Evaluation of a Diphenylphosphorylazide-Crosslinked Collagen Membrane for Guided Bone Regeneration in Mandibular Defects in Rats
Publication date :
November 1998
Journal title :
Journal of Periodontology
ISSN :
0022-3492
Publisher :
American Academy of Periodontology, United States - Illinois
Volume :
69
Issue :
11
Pages :
1238-46
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 January 2013

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