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

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 pr...

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Published in:	Journal of periodontology (1970) Vol. 76; no. 10; pp. 1681 - 1689
Main Authors:	Soares, Fernando Peixoto, Hayashi, Fernando, Yorioka, Christiane Watanabe, Pannuti, Claudio Mendes, Gioso, Marco Antonio, Alves de Lima, Luiz Antonio Pugliesi, Romito, Giuseppe Alexandre, Pustiglioni, Francisco Emílio
Format:	Journal Article
Language:	English
Published:	United States American Academy of Periodontology 01-10-2005
Subjects:	Animals Bone Dentistry Dogs Furcation Defects - surgery furcation defects/therapy Insulin-Like Growth Factor I - pharmacology insulin‐like growth factor I periodontal diseases/surgery Periodontium - physiology Platelet-Derived Growth Factor - pharmacology platelet‐derived growth factor Proto-Oncogene Proteins c-sis Random Allocation Regeneration Tissue Transplantation - methods Tooth Socket - drug effects Tooth Socket - surgery wound healing Wound Healing - drug effects
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Summary:	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 μg/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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0022-3492 1943-3670
DOI:	10.1902/jop.2005.76.10.1681