Effect of thermal cycling on denture base and autopolymerizing reline resins
J. appl. oral sci
; 21(3): 219-224, May/Jun/2013. graf
Artigo
em Inglês
| LILACS
| ID: lil-679323
Biblioteca responsável:
BR1.1
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:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Elastômeros de Silicone
/
Resinas Acrílicas
/
Bases de Dentadura
/
Reembasamento de Dentadura
/
Polimerização
Tipo de estudo:
Estudo de avaliação
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2013
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
UNESP - Univ. Estadual Paulista/BR