RESUMO
A lithium disilicate glass-ceramic material has recently been developed for the fabrication of 3-unit fixed partial dentures. Conducted on 60 restorations, this initial trial attempted to define clinical indications and establish design principles for fixed partial dentures fabricated of this ceramic material. The design requisites varied depending on placement on the arch, and the authors concluded that lithium disilicate restorations caused reduced antagonist structure or opposing tooth wear. This investigation demonstrated that when a novel ceramic system was utilized for 3-unit restorations replacing up to the first premolar and attained minimal criteria for connector dimensions, an acceptable clinical success rate was achieved.
Assuntos
Porcelana Dentária , Planejamento de Dentadura , Prótese Parcial Fixa , Adulto , Idoso , Cerâmica , Porcelana Dentária/química , Falha de Restauração Dentária , Retenção de Dentadura , Prótese Parcial Fixa/efeitos adversos , Feminino , Humanos , Compostos de Lítio/química , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Abrasão Dentária/etiologia , Preparo Prostodôntico do DenteRESUMO
The IPS Empress system is a highly esthetic hot pressed glass ceramic material for fabrication of single crowns. Adhesive cementation of the system not only contributes to the esthetics but is necessary for increased strength of the crown. The purpose of this prospective clinical trials was to evaluate the longevity of 75 adhesively cemented Empress full crowns. An additional aim was to assess the adhesive cementation methodology and potential side effects. At the three-year point, one molar crown fractured for a 1.3 percent failure rate. The resin cementation technique that was employed exhibited a low incidence of microleakage with few clinical side effects. There was a 5.6 percent incidence of post-cementation sensitivity, with all symptoms subsiding by eight weeks. None of the crowns in the study required endodontic therapy.
