RESUMO
A controlled step-by-step approach for the use of templates for placement of dental implants is discussed. The provisional restoration, the blueprint for the final restoration, is duplicated in a radiopaque radiographic template. This illustrates the outline of the planned restoration in relation to the hard tissues.
Assuntos
Sulfato de Bário , Implantação Dentária Endóssea/métodos , Planejamento de Prótese Dentária/métodos , Prótese Parcial Temporária , Arcada Parcialmente Edêntula/diagnóstico por imagem , Meios de Contraste , Humanos , Modelos Dentários , Planejamento de Assistência ao Paciente , Tomografia Computadorizada por Raios XRESUMO
The load fatigue performance of the CeraOne and EsthetiCone implant systems was investigated. Three torques (standard torque, standard torque + 20%, and standard torque -20%) were used to tighten the screws. A rotating-beam fatigue model was used. A 70-N load was applied to the specimens at a 30-degree angle to the long axis. Two-way analysis of variance revealed (1) no statistically significant difference between the three torques for each system, and (2) a statistically significant difference between the implant systems. Implant failure occurred in 10 of 15 CeraOne specimens. In the EsthetiCone system, only abutment screw failure occurred.
Assuntos
Dente Suporte , Implantes Dentários , Análise de Variância , Parafusos Ósseos , Planejamento de Prótese Dentária , Falha de Restauração Dentária , Ligas de Ouro/química , Teste de Materiais , Estresse Mecânico , Propriedades de Superfície , Titânio/química , TorqueRESUMO
Thirty-two consecutively treated patients were included in this study of 49 root-resected molars that were under regular recall of 3 to 6 months for a mean of 11.5 years (2 to 23 years). Treatment modalities for all patients were very similar. Endodontic treatment was conservatively performed prior to resection with maximum preservation of tooth structure. No threaded posts were used. Provisional restorations were in place prior to periodontal therapy (pocket reduction with or without osseous surgery). Most patients were treated with complete-mouth reconstructions. Ninety-two percent of all resected molars survived an average of 12 years. Teeth failed because of recurrent caries or for endodontic and strategic reasons. If proper treatment is rendered periodontically involved molars can be maintained for a long period of time and serve successfully as abutments in complete-mouth restorations. Great care must be taken throughout the whole process of case selection, reevaluation, and endodontic, periodontal, restorative, and maintenance therapies.
Assuntos
Dente Molar/cirurgia , Periodontite Periapical/cirurgia , Raiz Dentária/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Restauração Dentária Permanente , Humanos , Pessoa de Meia-Idade , Bolsa Periodontal/cirurgia , Prognóstico , Estudos Retrospectivos , Tratamento do Canal Radicular , Fatores de Tempo , Resultado do TratamentoRESUMO
The functional and esthetic needs of the patient who is to receive an implant-retained prosthesis can be established with the help of a provisional restoration that is duplicated in a radiopaque radiographic template. The computer tomogram prepared with the aid of the template allows the evaluation of the implant sites in relation to the outline of the planned restoration. The radiographic template is converted into the surgical template, which contains information regarding the optimal position and angulation of implants. Because the surgical template is a modification of the radiographic template, which rests rigidly on the teeth during all procedures, implant placement is more predictable.