Effect of thermal cycling on denture base and autopolymerizing reline resins
J. appl. oral sci
;
21(3): 219-224, May/Jun/2013. graf
Artículo
en Inglés
| LILACS
| ID: lil-679323
ABSTRACT
Objective This study evaluated the fracture toughness (FT) of denture base and autopolymerizing reline resins, with and without thermocycling (T). Material and Methods Specimens of each material (denture base acrylic resin - Lucitone 550 – L; autopolymerizing reline resins - Ufi Gel Hard–UH, Tokuyama Rebase II-TR, New Truliner–NT and Kooliner-K), were produced, notched and divided into two groups (n=10) CG (control group of autopolymerizing reline resins and L) FT tests were performed after polymerization; TG (thermocycled group) FT tests were performed after T (5°C and 55°C for 5,000 cycles). Results:
Results (MPa.m1/2) were analyzed by two-way ANOVA and Tukey's test (p=0.05). L exhibited the highest FT mean values in both groups (CG - 2.33; TG - 2.17). For the CG groups, NT showed the highest FT (1.64) among the autopolymerizing reline resins, and K the lowest (1.04). After T, when the autopolymerizing reline resins were compared, a statistically significant difference in FT was found only between the NT (1.46) and TR (1.00). Conclusions Thermocycling increased the FT of K and did not influence the FT of L, UH, TR and NT. .
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Elastómeros de Silicona
/
Resinas Acrílicas
/
Bases para Dentadura
/
Rebasado de Dentaduras
/
Polimerizacion
Tipo de estudio:
Estudios de evaluación
Límite:
Humanos
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2013
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
UNESP - Univ. Estadual Paulista/BR
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