Prevalência do uso de protetor bucal por atletas dos principais clubes de futebol do estado do Rio de Janeiro

Esportes de contato apresentam cada vez mais competividade e, com isso, há um aumento no número de lesões, em geral. Lesões orofaciais estão dentro desse aumento, principalmente traumatismos bucais e dentários. O protetor bucal é um aparato que diminui e/ou evita tais danos faciais. Dessa forma, o presente estudo objetivou verificar a prevalência e a importância do uso do protetor bucal nos atletas profissionais dos principais clubes de futebol do Estado do Rio de Janeiro. A amostra foi composta de 57 jogadores de futebol profissional entre 18 e 36 anos. A avaliação se deu através de questionário individual para cada atleta. Os resultados mostraram que 82,4% dos jogadores apresentaram lesões bucais. Além disso, 94,7% disseram ter conhecimento sobre protetores bucais e 76,7% acharem seu uso necessário, porém apenas 12,2% responderam possuir algum protetor bucal. Conclui-se que apesar do conhecimento da importância do uso de proteção bucal, os atletas de futebol ainda não fazem uso de tal aparato de proteção.Contact sports have increasingly competitiveness and, therefore, there is na increase in the number of injuries in general. Orofacial injuries are within of this increase, mainly buccal and dental trauma. The mouthguard is an apparatus that reduces and/or prevents such facial injuries. Thus, the present study aimed to determine the prevalence and the importance of using the mouthguard in professional athletes of the top soccer clubs of Rio de Janeiro State. The sample consisted of 57 professional soccer players between 18 and 36 years. The evaluation was made through individual questionnaire for each athlete. The results showed that 82.4 % of subjects showed oral lesions. In addition, 94.7 % said they had knowledge of mouthguards and 76.7 % deem their use necessary, but only 12.2 % said having some mouth guard. In conclusion, despite the knowledge of the importance of using oral protection, soccer players still do not use such protection apparatus

Randomized Controlled Clinical Trial of Nanostructured Carbonated Hydroxyapatite for Alveolar Bone Repair

The properties of the biodegradation of bone substitutes in the dental socket after extraction is one of the goals of regenerative medicine. This double-blind, randomized, controlled clinical trial aimed to compare the effects of a new bioabsorbable nanostructured carbonated hydroxyapatite (CHA) with a commercially available bovine xenograft (Bio-Oss®) and clot (control group) in alveolar preservation. Thirty participants who required tooth extraction and implant placement were enrolled in this study. After 90 days, a sample of the grafted area was obtained for histological and histomorphometric evaluation and an implant was installed at the site. All surgical procedures were successfully carried out without complications and none of the patients were excluded. The samples revealed a statistically significant increase of new bone formation (NFB) in the CHA group compared with Bio-Oss® after 90 days from surgery (p < 0.05). However, the clot group presented no differences of NFB compared to CHA and Bio-Oss®. The CHA group presented less amount of reminiscent biomaterial compared to Bio-Oss®. Both biomaterials were considered osteoconductors, easy to handle, biocompatible, and suitable for alveolar filling. Nanostructured carbonated hydroxyapatite spheres promoted a higher biodegradation rate and is a promising biomaterial for alveolar socket preservation before implant treatment

In Vitro and In Vivo Evaluation of Nanostructured Biphasic Calcium Phosphate in Granules and Putty Configurations

Synthetic biphasic calcium phosphate (BCP) granules and powder are biocompatible biomaterials with a well-known capacity for osteoconduction, presenting very satisfactory clinical and histological results. It remains unanswered if the putty configuration impacts the biological response to the material. In this study, we aimed to compare the cytocompatibility and biocompatibility of nanostructured BCP in the putty configuration (moldable nanostructured calcium phosphate, MnCaP) on the healing of critical-sized bone defects (8 mm) in rat calvaria. Cytocompatibility was determined through the viability of fibroblast cells (V-79) to the extracts of different concentrations of MnCaP. Forty-five Wistar rats were randomly divided into three groups (n = 15)—clot, MnCaP, and commercial biphasic calcium phosphate in granules configurations (Nanosynt®)—and subdivided into three experimental periods (1, 3, and 6 months). Histological, histomorphometric, and microtomographic analyses allowed the evaluation of newly formed bone, residual biomaterial, and connective tissue. The in vitro evaluation showed that MnCaP was cytocompatible. The histomorphometric results showed that the Nanosynt® group granted the highest new-formed bone values at six months (p < 0.05), although the biomaterial volume did not differ between groups. The putty configuration was easier to handle, and both configurations were biocompatible and osteoconductive, presented similar biosorption rates, and preserved the calvaria architecture