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Proceedings Paper

LED phototherapy on midpalatal suture after rapid maxilla expansion: a Raman spectroscopic study
Author(s): Cristiane B. Rosa; Fernando Antonio L. Habib; Telma M. de Araújo; Jean N. dos Santos; Maria Cristina T. Cangussu D.D.S.; Artur Felipe S. Barbosa M.D.; Isabele Cardoso V. de Castro; Luiz Guilherme P. Soares; Antonio L. B. Pinheiro D.D.S.
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Paper Abstract

A quick bone formation after maxillary expansion would reduce treatment timeand the biomodulating effects of LED light could contribute for it. The aim of this study was to analyze the effect of LED phototherapy on the acceleration of bone formation at the midpalatal suture after maxilla expansion. Thirty rats divided into 6 groups were used on the study at 2 time points - 7 days: Control; Expansion; and Expansion + LED; and 14 days: Expansion; Expansion + LED in the first week; Expansion and LED in the first and second weeks. LED irradiation occurred at every 48 h during 2 weeks. Expansion was accomplished using a spatula and maintained with a triple helicoid of 0.020” stainless steel orthodontic wire. A LED light (λ850 ± 10nm, 150mW ± 10mW, spot of 0.5cm2, t=120 sec, SAEF of 18J/cm2) was applied in one point in the midpalatal suture immediately behind the upper incisors. Near infrared Raman spectroscopic analysis of the suture region was carried and data submitted to statistical analyzes (p≤0.05). Raman spectrum analysis demonstrated that irradiation increased hydroxyapatite in the midpalatal suture after expansion. The results of this indicate that LED irradiation; have a positive biomodulation contributing to the acceleration of bone formation in the midpalatal suture after expansion procedure.

Paper Details

Date Published: 5 March 2015
PDF: 8 pages
Proc. SPIE 9309, Mechanisms for Low-Light Therapy X, 93090K (5 March 2015); doi: 10.1117/12.2079274
Show Author Affiliations
Cristiane B. Rosa, Univ. Federal da Bahia (Brazil)
Fernando Antonio L. Habib, Univ. Federal da Bahia (Brazil)
Telma M. de Araújo, Univ. Federal da Bahia (Brazil)
Jean N. dos Santos, Univ. Federal da Bahia (Brazil)
Maria Cristina T. Cangussu D.D.S., Univ. Federal da Bahia (Brazil)
Artur Felipe S. Barbosa M.D., Univ. Federal da Bahia (Brazil)
Isabele Cardoso V. de Castro, Univ. Federal da Bahia (Brazil)
Luiz Guilherme P. Soares, Univ. Federal da Bahia (Brazil)
Antonio L. B. Pinheiro D.D.S., Univ. Federal da Bahia (Brazil)
Univ. of São Paulo (Brazil)

Published in SPIE Proceedings Vol. 9309:
Mechanisms for Low-Light Therapy X
Michael R. Hamblin; James D. Carroll; Praveen Arany, Editor(s)

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