Healing at mandibular block-grafted sites: an experimental study in dogs

AimThe aim of this study was to evaluate the healing of autologous bone block grafts or deproteinized bovine bone mineral (DBBM) block grafts applied concomitantly with collagen membranes for horizontal alveolar ridge augmentation.Material and methodsIn six Labrador dogs, molars were extracted bilaterally, the buccal bony wall was removed, and a buccal box-shaped defect created. After 3months, a bony block graft was harvested from the right ascending ramus of the mandible and reduced to a standardized size. A DBBM block was tailored to similar dimensions. The two blocks were secured with screws onto the buccal wall of the defects in the right and left sides of the mandible, respectively. Resorbable membranes were applied at both sides, and the flaps sutured. After 3months, one implant was installed in each side of the mandible, in the interface between grafts and parent bone. After 3months, biopsies were harvested and ground sections prepared to reveal a 6-month healing period of the grafts.Results776.2% and 5.9 +/- 7.5% of vital mineralized bone were found at the autologous bone and DBBM block graft sites, respectively. Moreover, at the DBBM site, 63 +/- 11.7% of connective tissue and 31 +/- 15.5% of DBBM occupied the area analyzed. Only 0.2 +/- 0.4% of DBBM was found in contact with newly formed bone. The horizontal loss was in a mean range of 0.9-1.8mm, and 0.3-0.8mm, at the autologous bone and DBBM block graft sites, respectively.ConclusionsAutologous bone grafts were vital and integrated to the parent bone after 6months of healing. In contrast, DBBM grafts were embedded into connective tissue, and only a limited amount of bone was found inside the scaffold of the biomaterial.

Structural and functional evidence for membrane docking and disruption sites on phospholipase A2-like proteins revealed by complexation with the inhibitor suramin

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Albumin-induced circular dichroism in Congo red: applications for studies of amyloid-like fibril aggregates and binding sites

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Cr+3 distribution in Al1 and Al2 Sites of alexandrite (BeAl2O4: Cr3+) induced by annealing, investigated by optical spectroscopy

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Características da interface dos sites de notícias: um estudo do design e da usabilidade de jornais impressos e eletrônicos

The paper presents an ergonomic analysis of reading usability of electronic journals and the comparison with newspapers. As a method, it was adopted an evaluation of the user perception, from a printed questionnaire applied to a group of 41 people. Overall, the results indicate that on the analyzed newspapers there is need for greater care concerning the aspects of visual representation, involving more design application, usability, ergonomics, technology and communication.

Design em sites de encontro: promessas de amor verdadeiro, rápido, anônimo e gratuito

O presente ensaio parte de pesquisa em desenvolvimento sobre a atração amorosa na Internet. Os sites de namoro são considerados lugar de encontro na rede, oferecendo aos seus usuários inúmeros recursos interativos para facilitar o conhecimento de possíveis parceiros amorosos. Aponta aspectos relacionados às estratégias utilizadas pelos sites para atrair pessoas. O design das páginas principais e anúncios são fonte de rico material de análise, reforçando mensagens atrativas que podem contribuir para o sucesso destes sites junto à sua clientela.

Desejos, brasilidades e segredos: o negócio do sexo na relação entre clientela espanhola e travestis brasileiras

The gender ethinicization and the nationality sexualization are aspects that have been discussed in the relationship between Spanish clients and Brazilian transvestites in the brisk sex business in Spain. Sometimes, in these sexual relationships, which are also business relationships, erotic aspects are associated with exoticism that is not related only to nationality or race, but also to new sexual experiences that are more exciting than those considered conventional practices. Hence, the connection between Brazil and the transgender body, made by some Spanish clients, makes sense only when considering the dense sexual grammar involved in those relationships. These signs were structured based on continual colonial attributions, which have been given fresh meaning by the new migration flow resulting from the broad spread of images and insertion of Brazil into the sexual tourism route. Aiming at fully discussing this proposal, this research is based on the queer theory and on other studies in the literature that focus on the poststructuralist and post-colonial sex market. These tools were used to analyze the data gathered in an ethnographic study carried out in São Paulo, Madrid, and Barcelona, as well as data collected from Spanish websites about sexual interest in transvestites

O skate na cultura corporal de movimento: aspectos evolutivos e sociais

Skateboarding gets practitioners and followers all over the world and it's still growing. Thus performing a detailed analysis of its tracks becomes exciting. This study has a purpose of investigation about the evolution of the skateboard as a leisure activity and as a sport, supported by historical and social factors analysis that influenced their growth. Furthermore to understand the sport history and its influence in the socialization process, and also in the insertion of individuals in a social context within the body movement culture. The methodology used in this study was based on a literature review, analyzing articles, books, documents, websites and reports of the genre. It was concluded that the practice of skateboarding is unique and it's promoted to be and to have self identity and it is directly related to an activity that is characterized as free and creative without any molded identity. And also promote the insertion of this kind of skateboarding as a universal phenomenon about the body movement seeking social interactions in different educational views through a sharing attitude

Degradação urbana decorrente da atividade de mineração para a construção civil em Teresina - PI

Pós-graduação em Geografia - IGCE