Repair of Class II furcation defects after a reparative tissue graft obtained from extraction sockets treated with growth factors: a histologic and histometric study in dogs.

Abstract

BACKGROUND:

Reparative tissue of extraction sockets was proposed as grafting material in the treatment of periodontal defects. Our hypothesis was that the addition of growth factors to extraction sockets improves the regenerative potential of this tissue when used as a graft. The objective of the present study was to analyze qualitatively and quantitatively the repair of acute Class II furcation defects after they receive this grafting material.

METHODS:

The second and third upper premolars were extracted from four dogs. Platelet-derived growth factor (PDGF)-BB and insulin-like growth factor (IGF)-I, at concentrations of 6 microg/ml each, were applied to the resulting sockets. After 5 days, 24 acute defects (12 control and 12 test defects) were created in the second, third, and fourth lower premolars. Only the test sites received the graft. The flaps were positioned coronally on both sides and sutured. After 45 days, the specimens were collected, decalcified, and processed histologically in a buccal-lingual plane. The parameters were measured horizontally in the buccal-lingual direction.

RESULTS:

Repair was histologically and histometrically similar in the two groups. No significant difference was observed between the test and control groups in the parameters connective tissue, new cementum, new bone, and junctional epithelium.

CONCLUSION:

The use of this graft did not show beneficial effects on the repair of acute Class II furcation defects in dogs.

• Authors: Fernando Peixoto Soares, Fernando Hayashi, Christiane Watanabe Yorioka, Claudio Mendes Pannuti, Marco Antonio Gioso, Luiz Antonio Pugliesi Alves de Lima, Giuseppe Alexandre Romito, Francisco Emílio Pustiglioni
• Journal: Journal of periodontology (J Periodontol) Vol. 76 Issue 10 Pg. 1681-9 (Oct 2005) ISSN: 0022-3492 [Print] United States
• PMID: 16253090 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Platelet-Derived Growth Factor
• Proto-Oncogene Proteins c-sis
• Becaplermin
• Insulin-Like Growth Factor I

Topics

• Animals
• Becaplermin
• Dogs
• Furcation Defects (surgery)
• Insulin-Like Growth Factor I (pharmacology)
• Periodontium (physiology)
• Platelet-Derived Growth Factor (pharmacology)
• Proto-Oncogene Proteins c-sis
• Random Allocation
• Regeneration
• Tissue Transplantation (methods)
• Tooth Socket (drug effects, surgery)
• Wound Healing (drug effects)