RESUMO
A severely resorbed maxilla was reconstructed utilizing a combined surgical technique that included the placement of a horseshoe-shaped bicortical calvarium onlay graft, fixed by six endosseous implants. Two more implants were placed in the pterygoid process to support and stabilize the prosthesis. The dentition was rehabilitated with a fixed implant-supported hybrid prosthesis.
Assuntos
Perda do Osso Alveolar/cirurgia , Aumento do Rebordo Alveolar/métodos , Transplante Ósseo/métodos , Doenças Maxilares/cirurgia , Dente Suporte , Implantação Dentária Endóssea/métodos , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Feminino , Humanos , Arcada Edêntula/reabilitação , Pessoa de Meia-Idade , CrânioRESUMO
The purpose of this study was to compare, in vivo, in 30 teeth destined for extraction, the abilities of the Scalex rotary bur system and Gracey curettes to obtain a smooth root surface. The time taken for each treatment was also evaluated. The profilometry results showed no significant differences between instruments with regard to roughness or working time, in single-rooted teeth, multirooted teeth, or in pockets of 5 mm or more. Only for distal longitudinal roughness and in pockets less than 5 mm did the Scalex system perform slightly better. There was some improvement in working time when the distal surfaces were instrumented with Scalex. Both systems demonstrated a similar capacity to render smooth surfaces.
Assuntos
Raspagem Dentária/instrumentação , Aplainamento Radicular/instrumentação , Raiz Dentária/ultraestrutura , Desenho de Equipamento , Feminino , Humanos , Masculino , Teste de Materiais , Pessoa de Meia-Idade , Perda da Inserção Periodontal/patologia , Bolsa Periodontal/patologia , Fatores de Tempo , Terapia por Ultrassom/métodosRESUMO
Sixteen teeth from patients with advanced periodontal disease were processed with the direct fixative technique for observation with a Scanning Electron Microscope in order to test the adequacy of this technique and to observe the components of the tooth wall of the periodontal pocket. Different cell populations are described emphasizing the appearance of intact neutrophils. The results suggest that this fixative method may be an improvement on the conventional techniques for SEM.