Percorrer por autor "Santos, Alexandre"
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- Dental implant surface decontamination and surface change of an electrolytic method versus mechanical approaches : a pilot in vitro studyPublication . Assunção, Mariana Anselmo; Botelho, João; Machado, Vanessa; Proença, Luís; Matos, António P. A.; Mendes, José João; Bessa, Lucinda J.; Taveira, Nuno; Santos, AlexandreDental implants are the preferred fixed oral rehabilitation for replacing lost teeth. When peri-implant tissues become inflamed, the removal of plaque accumulating around the implant becomes imperative. Recently, several new strategies have been developed for this purpose, with electrolytic decontamination showing increased potential compared to traditional mechanical strategies. In this in vitro pilot study, we compare the efficacy of an electrolytic decontaminant (Galvosurge®) with an erythritol jet system (PerioFlow®) and two titanium brushes (R-Brush™ and i-Brush™) in removing Pseudomonas aeruginosa PAO1 biofilms from implants. Changes in the implant surface after each approach were also evaluated. Twenty titanium SLA implants were inoculated with P. aeruginosa and then randomly assigned to each treatment group. After treatment, decontamination efficacy was assessed by quantifying colony-forming units (log10 CFU/cm2) from each implant surface. Scanning electron microscopy was used to analyse changes in the implant surface. With the exception of R-Brush, all treatment strategies were similarly effective in removing P. aeruginosa from implants. Major surface changes were observed only in implants treated with titanium brushes. In conclusion, this pilot study suggests that electrolytic decontamination, erythritol-chlorhexidine particle jet system and i-Brush™ brushing have similar performance in removing P. aeruginosa biofilm from dental implants. Further studies are needed to evaluate the removal of more complex biofilms. Titanium brushes caused significant changes to the implant surface, the effects of which need to be evaluated.
- Regeneração periodontal com proteínas derivadas da matriz de esmalte (Emdogain®) – Caso clínicoPublication . Izidoro, Catarina; Vilhena, Mafalda dos Santos; Nemésio, Mafalda; Alves, Ricardo; Santos, Alexandre
- The use of autogenous teeth for alveolar ridge preservation : a literature reviewPublication . Cenicante, João; Botelho, João; Machado, Vanessa; Mendes, José João; Mascarenhas, Paulo; Alcoforado, Gil; Santos, AlexandreAlveolar ridge resorption is a natural consequence of teeth extraction, with unpleasant aesthetic and functional consequences that might compromise a future oral rehabilitation. To minimize the biological consequences of alveolar ridge resorption, several surgical procedures have been designed, the so-called alveolar ridge preservation (ARP) techniques. One important characteristic is the concomitant use of biomaterial in ARP. In the past decade, autogenous teeth as a bone graft material in post-extraction sockets have been proposed with very interesting outcomes, yet with different protocols of preparation. Here we summarize the available evidence on autogenous teeth as a biomaterial in ARP, its different protocols and future directions.