ABSTRACT
The rehabilitation of patients with dental implant-supported restorations is an ideal treatment option in contemporary dentistry. The aim of this review was to compile and to demonstrate the mechanical response during loading condition, on the stress distributions of implant-supported prostheses. The findings show that the majority of stresses were concentrated in the cervical region of the implant/abutment interface and that they can be affected by several clinical parameters and loading conditions. Finally, the final prosthetic design should combine superior mechanical response, long-term survival rate and allow patient satisfaction. (AU)
A reabilitação de pacientes com restaurações implanto-suportadas é uma opção de tratamento ideal na odontologia contemporânea. O objetivo desta revisão foi compilar e demonstrar a resposta mecânica durante a aplicação de carga, na distribuição de tensão de próteses implanto-suportadas. Os achados mostram que a maioria das tensões se concentram na região cervical da interface implante/pilar e pode ser afetada por diversos parâmetros clínicos e condições de carregamento. Por fim, o desenho protético final deve combinar uma melhor resposta mecânica, taxa de sobrevida a longo prazo e permitir a satisfação do paciente. (AU)
Subject(s)
Prostheses and Implants , Dental Implants , Finite Element Analysis , Biomechanical Phenomena , ReviewABSTRACT
Conventional endodontic treatment requires the removal of the pulp and dentin by shaping the inside of the tooth. The shaping occurs with the use of drills to a geometry that is directly related to a predetermined form of material that will obturate the tooth's interior.The aim of this study was to investigate a novel device that applies sonic energy during the obturation of the tooth's interior. Extracted human teeth underwent endodontic treatment. Half of the group were conventionally obturated and the other half were obturated with the novel device. Post-treatment radiographs were evaluated utilizing Schulich dental school endodontic marking criteria.No statistical significance (α = 0.05) was determined between each group. A higher incidence of filled space (60%) occurred with sonic obturation when compared to conventional obturation (33%). Micro-computer tomography (CT) images were obtained of one sample from each group to assess the three-dimensional obturation. The novel device facilitated easy handling and demonstrated potential for effective obturation. Further tests are required for device refinement, larger sample sizes and clinical validation to assess the attitude and practice of dental professionals towards using of advance Radiographic technique.