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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bioactive glass-ceramic bone repair associated or not with autogenous bone: a study of organic bone matrix organization in a rabbit critical-sized calvarial model

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Author(s):
Biguetti, Claudia Cristina [1, 2] ; Cavalla, Franco [3] ; Tim, Carla Roberta [4] ; Saraiva, Patricia Pinto [1] ; Orcini, Wilson [5] ; Holgado, Leandro De Andrade [6] ; Muniz Renno, Ana Claudia [7] ; Matsumoto, Mariza Akemi [8]
Total Authors: 8
Affiliation:
[1] Univ Sagrado Coracao, Res & Postgrad Prorectory, Rua Irma Arminda 10-50, BR-17011160 Bauru, SP - Brazil
[2] Univ Sao Paulo, FOB USP, Bauru Sch Dent, Oral Biol Doctorals Program, Alameda Octavio Pinheiro Brizola 9-75, BR-17012901 Bauru, SP - Brazil
[3] Univ Chile, Sch Dent, Dept Conservat Dent, Sergio Livingstone 943, Santiago, RM - Chile
[4] Univ Fed Sao Carlos, UFSCAR, Biotechnol Doctorals Program, Rodovia Washington Luis, Km 235, SP-310, BR-13565905 Sao Carlos, SP - Brazil
[5] USC, Res & Postgrad Prorectory, Mol Biol Lab, Rua Irma Arminda 10-50, BR-17011160 Jardim - Brazil
[6] USC, Dept Hlth Sci, Discipline Oral & Maxillofacial Surg, Rua Irma Arminda 10-50, BR-17011160 Jardim Brasil Bauru, SP - Brazil
[7] Univ Fed Sao Paulo, Dept Biosci, Campus Baixada Santista UNIFESP, BR-11060001 Santos, SP - Brazil
[8] Sao Paulo State Univ, FOA UNESP, Dept Basic Sci, Discipline Histol & Embriol, Rua Paul Harris 1100, Casa 03, BR-18016110 Jardim Nova Iorque Araca, SP - Brazil
Total Affiliations: 8
Document type: Journal article
Source: CLINICAL ORAL INVESTIGATIONS; v. 23, n. 1, p. 413-421, JAN 2019.
Web of Science Citations: 0
Abstract

ObjectiveThe aim of the study was to analyze bone matrix (BMX) organization after bone grafting and repair using a new bioactive glass-ceramic (Biosilicate((R))) associated or not with particulate autogenous bone graft.Material and methodsThirty rabbits underwent surgical bilateral parietal defects and divided into groups according to the materials used: (C) controlblood clot, (BG) particulate autogenous bone, (BS) bioactive glass-ceramic, and BG + BS. After 7, 14, and 30days post-surgery, a fragment of each specimen was fixed in -80 degrees C liquid nitrogen for zymographic evaluation, while the remaining was fixed in 10% formalin for histological birefringence analysis.ResultsThe results of this study demonstrated that matrix organization in experimental groups was significantly improved compared to C considering collagenous organization. Zymographic analysis revealed pro-MMP-2, pro-MMP-9, and active (a)-MMP-2 in all groups, showing gradual decrease of total gelatinolytic activity during the periods. At day 7, BG presented more prominent gelatinolytic activity for pro-MMP-2 and 9 and a-MMP-2, when compared to the other groups. In addition, at day 7, a 53% activation ratio (active form/{[}active form + latent form]) was evident in C group, 33% in BS group, and 31% in BG group.ConclusionIn general, BS allowed the production of a BMX similar to BG, with organized collagen deposition and MMP-2 and MMP-9 disponibility, permitting satisfactory bone remodeling at the late period.Clinical relevanceThe evaluation of new bone substitute, with favorable biological properties, opens the possibility for its use as a viable and efficient alternative to autologous bone graft. (AU)

FAPESP's process: 09/17294-1 - Repair of rabbits calvaria bone defects using bioactive glass-ceramic: biosilicate
Grantee:Gustavo Caviquioli
Support type: Scholarships in Brazil - Scientific Initiation