Resumo

FRANCO, João Eduardo Miranda et al. Efficiency of photodynamic therapy in the immediate postoperative of dental implants: pilot study. RPG, Rev. pós-grad. [online]. 2010, vol.17, n.3, pp. 151-157. ISSN 0104-5695.

In most of the dental surgical procedures to insert an implant fixture, there is an inherent contamination related, which may impair the healing process. This project has the goal to propose a way to reduce the microbial peri-implant area through photodynamic therapy (PDT). After the selection of patients (criteria: normoreactive patients, presenting intercalate superior space, with no history or signs of advanced aggressive periodontitis), five patients were selected and rehabilitated via Standard Plus implants (Straumann^®). After the surgery, the first microbial peri-implant samples were collected (control), then methylene blue (0,005%) was applied for 5 minutes followed by diode laser light (GaAlAs, 660 nm, 40 mW) for 2 minutes, totalizing 120 J/cm² of energy density, divided in 4 points (2 at the vestibular and 2 at the palatal). By the end of the PDT, another microbial collection was carried out (test). After dilutions, the culture media were incubated in an anaerobiosis atmosphere for a week, and then the counting of total colony-forming units (CFU) was performed. The Wilcoxon signed-rank test showed a significant difference (p < 0,001) in the bacterial reduction for CFU, with average of 93,67%. The results allow us to declare that PDT is an effective method of decontamination of the surgical area for the immediate postoperative of dental implants.

Palavras-chave : Dental implantation; Microbiology; Decontamination; Laser therapy; low-level; Photochemotherapy.