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Proceedings Paper

Assessment of bone repair associated with the use of organic bovine bone and membrane irradiated with 830 nm
Author(s): Marleny Elizabeth Marquez de Martinez Gerbi; Antonio Luiz Barbosa Pinheiro; Francisco de Assis Limeira; Clovis Marzola; Luciana Maria Pedreira Ramalho; Elizabeth Arruda Carneiro Ponzi; Andre Olveira Soares; Livia Cristina Bandeira de Carvalho; Helena Cristina Vieira Lima; Thais Oliveira Goncalves; Gyselle Cyntia Silva Meireles
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Paper Abstract

The aim of the present investigation was to assess histologically the effect of LLLT (λ830nm, Thera Lase, DMC, Sao Carlos, SP, Brazil, 40mW, CW, spot size 0.60mm, 16J/cm2 per session) on the repair of surgical defects created in the femur of the Wistar Albinus rat. The defects were filled to lyophilized organic bovine bone associated or not to GTR (decalcified cortical osseous membrane). Surgical bone defects were created in 42 animals divided into five groups: Group I (control - 6 animals); Group II (organic bovine bone - 9 animals); Group III (organic bovine bone + LLLT - 9 animals); Group IV (organic bovine bone + decalcified cortical osseous membrane - 9 animals); Group V (organic bovine bone + decalcified cortical osseous membrane + Laser - 9 animals). The animals on the irradiated groups received 16J/cm2 per session divided into four points around the defect (4J/cm2) being the first irradiation immediately after surgery and repeated seven times at every 48h. The animals were humanely killed after 15, 21 and 30 days. The results of the present investigation showed histological evidence of improved amount of collagen fibers at early stages of the bone healing (15 days) and increased amount of well organized bone trabeculae at the end of the experimental period (30 days) on irradiated animals compared to non irradiated ones. It is concluded that a positive biomodulative effect on the healing process of one defect associated or not to the use of organic lyophilized bone and biological bovine membrane on the femur of the rat.

Paper Details

Date Published: 3 July 2003
PDF: 8 pages
Proc. SPIE 4950, Lasers in Dentistry IX, (3 July 2003); doi: 10.1117/12.472879
Show Author Affiliations
Marleny Elizabeth Marquez de Martinez Gerbi, Univ. Federal da Bahia (Brazil)
Antonio Luiz Barbosa Pinheiro, Univ. Federal da Bahia (Brazil)
Francisco de Assis Limeira, Univ. Federal da Bahia (Brazil)
Clovis Marzola, Univ. de Sao Paulo (Brazil)
Luciana Maria Pedreira Ramalho, Univ. Federal da Bahia (Brazil)
Elizabeth Arruda Carneiro Ponzi, Univ. Federal de Pernambuco (Brazil)
Andre Olveira Soares, Univ. Federal da Bahia (Brazil)
Livia Cristina Bandeira de Carvalho, Univ. Federal da Bahia (Brazil)
Helena Cristina Vieira Lima, Univ. Federal da Bahia (Brazil)
Thais Oliveira Goncalves, Univ. Federal da Bahia (Brazil)
Gyselle Cyntia Silva Meireles, Univ. Federal da Bahia (Brazil)


Published in SPIE Proceedings Vol. 4950:
Lasers in Dentistry IX
Peter Rechmann; Daniel Fried; Thomas Hennig, Editor(s)

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