Repair bond strength of composite resin to zirconia restorations after different thermal cycles
The Journal of Advanced Prosthodontics
;
: 297-304, 2019.
Artigo
em Inglês
| WPRIM
| ID: wpr-761417
ABSTRACT
PURPOSE:
This in vitro study investigated the repair bond strength of the zirconia ceramic after different aging conditions. MATERIALS ANDMETHODS:
In order to imitate the failure modes of veneered zirconia restorations, veneer ceramic, zirconia, and veneer ceramic-zirconia specimens were prepared and were divided into 4 subgroups as control (37℃ distilled water for 24 hours ) and 3000, 6000, 12000 thermal cycling groups (n=15). Then, specimens were bonded to composite resin using a porcelain repair kit according to the manufacturer recommendation. The repair bond strength (RBS) test was performed using a universal testing machine (0.5 mm/min). Failure types were analyzed under a stereomicroscope. Two-way ANOVA and Bonferroni test were used for statistical analysis.RESULTS:
The RBS values of zirconia specimens were statistically significant and higher than veneer ceramic and veneer ceramic-zirconia specimens in control, 3000 and 6000 thermal cycling groups (P.05). Veneer ceramic specimens exhibited cohesive failure types, zirconia specimens exhibited adhesive failure types, and veneer ceramic-zirconia specimens exhibited predominately mixed failure types.CONCLUSION:
Thermal cycling can adversely affect RBS of composite resin bınded to level of fractured zirconia ceramics.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Técnicas In Vitro
/
Envelhecimento
/
Água
/
Cerâmica
/
Adesivos
/
Porcelana Dentária
Idioma:
Inglês
Revista:
The Journal of Advanced Prosthodontics
Ano de publicação:
2019
Tipo de documento:
Artigo
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