RESUMO
The durability of restorations with extensive dentin/enamel-bonded posterior partial and complete ceramic coverages were investigated. The effect of luting with a dual-cured and a self-cured luting agent was also studied. In 110 patients, 182 ceramic coverages (IPS Empress) were placed. In 58 restorations, Syntac was used in combination with the dual-cured resin composite Variolink. In the other restorations luted with the chemically cured resin composite Bisfil 2B, 25 were bonded with Gluma, 57 with Allbond 2, and 42 with Syntac. Of the 182 ceramics, 13 (7.1%) were assessed as non-acceptable after a mean observation period of 4.9 yr (range 4.3 7.5 yr). The reasons for failure were fracture (5), lost restorations (4), secondary caries (3) and endodontic treatment (1). No significant differences in failure rate were seen between the two luting agents or between the three dentin-bonding agents. Ceramic coverages placed on non-vital teeth failed in 9.7% of cases (3/31) and on vital teeth in 6.6% (10/151). The success rate of the dentin-enamel-bonded ceramic coverages reduces the need for a traditional full-coverage therapy and/or post or pin(s) and core placement. The technique investigated showed many clinical advantages such as less destruction of healthy tissue, and avoidance of endodontic treatment and/or deep cervical placement of restoration margins.
Assuntos
Cerâmica , Colagem Dentária , Esmalte Dentário/ultraestrutura , Restauração Dentária Permanente/classificação , Dentina/ultraestrutura , Adulto , Idoso , Idoso de 80 Anos ou mais , Silicatos de Alumínio/química , Cerâmica/química , Resinas Compostas/química , Cárie Dentária/fisiopatologia , Porcelana Dentária/química , Falha de Restauração Dentária , Restauração Dentária Permanente/métodos , Adesivos Dentinários/química , Feminino , Seguimentos , Glutaral/química , Humanos , Masculino , Metacrilatos/química , Pessoa de Meia-Idade , Ácidos Polimetacrílicos/química , Cimentos de Resina/química , Tratamento do Canal Radicular , Estatística como Assunto , Estatísticas não Paramétricas , Análise de Sobrevida , Dente não Vital/fisiopatologiaRESUMO
STATEMENT OF PROBLEM: Several in vitro studies have been published showing the incapability of the chemical cure of dual-cured resin composite luting agents to compensate for absence of visible light activation. PURPOSE: This study evaluated and compared pairs of Empress ceramic inlays luted with 2 chemical-cured luting agents: a resin-modified glass ionomer cement and a resin composite within individual patients. MATERIAL AND METHODS: Seventy-nine ceramic inlays were placed in class II cavities in 29 patients. In each patient half of the inlays were luted with a resin-modified glass ionomer cement and the other half with a chemical-cured resin composite cement. The inlays were evaluated clinically, according to modified USPHS criteria, at baseline, after 6 months, and 1 and 2 years. RESULTS: No failed inlays were observed during the 2-year follow-up. A slight ditching of the cement margins was observed in both luting groups. No significant difference was seen between the 2 luting techniques. CONCLUSION: IPS Empress inlays luted with both chemical-cured luting agents functioned satisfactorily in the short-term follow-up. Longer observation periods are necessary to evaluate the long-term clinical behavior of both luting techniques.