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Proceedings Paper

Laser biomodulation in bone implants: a Raman spectral study
Author(s): Cibelle Barbosa Lopes; Sokki Sathaiah; Antonio Luiz Barbosa Pinheiro; Janaina Duarte; Maria Cristina Martins
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Paper Abstract

Healing is important for the success of the insertion of implants and for treating traumatic or pathologic injuries of the bone. Lasertherapy has been suggested as a mean of improving bone healing. Near infrared Raman spectroscopy was used to assess the amount of both inorganic and organic components of irradiated and control bone around dental implants inserted in to the tibia. Fourteen rabbits received a titanium implant on the tibia; eight of them were irradiated with λ830nm laser (Thera Lase, DMC, Sao Carlos, SP, Brazil, 21.5 J/cm2, 10mW, spot size 0.60mm) and six acted as controls. The animals were sacrificed 15, 30 and 45 days after the surgery, and specimens were prepared for Raman spectroscopy, which was collected at every four points from each three thirds of the bone around the implants. The results showed significant differences in the concentration of inorganic components in irradiated specimens between 15 and 30days (p < 0.05), 15 and 45 (p < 0.01); between irradiated and controls 30 and 45 days after surgery (p <0.01). Concentration of organic components was also significantly different between irradiated and controls in periods of 30 to 45 days after surgery. It is concluded that LLLT does improve bone healing and Raman Spectroscopy can safely assess this.

Paper Details

Date Published: 3 July 2003
PDF: 6 pages
Proc. SPIE 4950, Lasers in Dentistry IX, (3 July 2003); doi: 10.1117/12.472876
Show Author Affiliations
Cibelle Barbosa Lopes, Univ. do Vale do Paraiba (Brazil)
Sokki Sathaiah, Univ. do Vale do Paraiba (Brazil)
Antonio Luiz Barbosa Pinheiro, Univ. do Vale do Paraiba (Brazil)
Janaina Duarte, Univ. do Vale do Paraiba (Brazil)
Maria Cristina Martins, STN Ed. Life Ctr. (Brazil)

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

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