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Proceedings Paper

Effect of laser phototherapy on human alveolar bone repair: micro tomographic and histomorphometrical analysis
Author(s): Marcia M. A. Romão; Márcia M. Marques; Arthur R. G. Cortes; Anna C. R. T. Horliana; Maria S. Moreira; Cesar A. Lascala
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Paper Abstract

The immediate dental implant placement in the molars region is critical, because of the high amount of bone loss and the discrepancy between the alveolar crest thickness and the dental implant platform. Laser phototherapy (LPT) improves bone repair thus could accelerate the implant placement. Twenty patients were selected for the study. Ten patients were submitted to LPT with GaAlAs diode laser (808nm) during molar extraction, immediately after, 24h, 48h, 72h, 96h and 7 days. The irradiations were applied in contact and punctual mode (100mW, 0.04cm2, 0.75J/cm2, 30s per point, 3J per point). The control group (n=10) received the same treatment; however with the power of the laser off. Forty days later samples of the tissue formed inside the sockets were obtained for further microtomography (microCTs) and histomorphometry analyses. Data were compared by the Student t test, whereas those from the different microCT parameters were compared by the Pearson correlation test (p<0.05). The relative bone volume, as well as area was significantly higher (p<0.001) in the lased than the control group. In the control group there were negative correlations between number and thickness, and between number and separation of trabecula (p<0.01). Between thickness and separation of trabecula the correlation was positive (p<0.01). The laser group showed significant negative correlation between the number and the thickness of trabecula (p<0.01). LPT accelerated bone repair. By the Pearson correlation test it was possible to infer that the lased group presented a more homogeneous trabecular configuration, which would allow earlier dental implant placement.

Paper Details

Date Published: 19 June 2015
PDF: 11 pages
Proc. SPIE 9531, Biophotonics South America, 95312N (19 June 2015); doi: 10.1117/12.2181041
Show Author Affiliations
Marcia M. A. Romão, Univ. de São Paulo (Brazil)
Univ. Nove de Julho (Brazil)
Márcia M. Marques, Univ. de São Paulo (Brazil)
Arthur R. G. Cortes, Univ. Nove de Julho (Brazil)
Anna C. R. T. Horliana, Univ. Nove de Julho (Brazil)
Maria S. Moreira, Univ. de São Paulo (Brazil)
Cesar A. Lascala, Univ. de São Paulo (Brazil)

Published in SPIE Proceedings Vol. 9531:
Biophotonics South America
Cristina Kurachi D.D.S.; Katarina Svanberg M.D.; Bruce J. Tromberg; Vanderlei Salvador Bagnato, Editor(s)

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