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18 February 2014 Evaluation of laser photobiomodulation (λ 780 nm) on repair of dental replantation in rats
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Proceedings Volume 8932, Mechanisms for Low-Light Therapy IX; 893208 (2014)
Event: SPIE BiOS, 2014, San Francisco, California, United States
Up to date the success of tooth replantation is still limited. The majority of the teeth is lost due to progressive external root resorption. The aim of this study was to assess, histologically, the effect of laser photobiomodulation on repair after tooth replantation. Sixty Wistar Albinus rats had the right upper incisor extracted and then divided into 4 groups: G1 - absence of storage medium; G2 - milk u s e d as storage medium; G3 – milk used as storage medium a n d followed by GaAlAs laser irradiation on dental surfaces and at the entrance of alveolus; G4 - milk used as storage medium associated with laser irradiation as in G3 before and after replantation on the buccal and palatal mucosa every 48 hours for 15 days. The animals were sacrificed at 15, 30 and 60 days after replantation. The results showed that after 15 days G4 exhibit more intense chronic inflammation, with presence of clastic cells and moderate inflammatory root resorption (p<0.05) when compared to G3, which presented absence of those parameters. At day 30 in G1, G2 and G4 mild to moderate chronic inflammation and severe external root resorption were observed. G3 remained with no inflammation and inflammatory root resorption with 30 and 60 days of healing experimental times. The results suggest that laser irradiation on the dental entrance of the dental alveolus prior to tooth replantation has a positive biomodulative effect on the healing process in rats.
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Fabíola Bastos de Carvalho, Rebeca Mota Vasconcelos M.D., Laila Santos, Artur Felipe dos Santos Barbosa, Marcio Cajazeira Aguiar D.D.S., Maria Cristina Teixeira Cangussu, Antônio Luiz Barbosa Pinheiro, and Luciana Maria Pedreira Ramalho "Evaluation of laser photobiomodulation (λ 780 nm) on repair of dental replantation in rats", Proc. SPIE 8932, Mechanisms for Low-Light Therapy IX, 893208 (18 February 2014);

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