Comparison of linear-linear and hyperbranched-linear dental composite
The Medical Journal of Malaysia
;
: 27-28, 2004.
Artigo
em Malaiala
| WPRIM
| ID: wpr-629921
ABSTRACT
Linear polymers have been commonly used as dental composite. However the aim of this work is to use hyperbranched polymer in an attempt to produce dental composite. The reason is because the dendritic molecules have shown low viscosity at higher molecular weight compared to the linear counterparts. Therefore, this work attempts to substitute the linear polymer with as much of hyperbranched polymer in the dental composite that would pass the required ISO 40491998(E) "Dentistry - Resin-based filling material". Several formulations of dental composites were used, i.e. combinations of linear-linear and linear-hyperbranched polymers for comparison. Following this, physical and mechanical characterisation were conducted based on the ISO standards such as water sorption and water solubility. Other characterisation such as polymerisation shrinkage and Vickers hardness were also evaluated. It was found that different types of resins give different physical and mechanical properties. The maximum achievable hyperbranched polymer, which passes the required ISO standard, that can be incorporated in the linear polymer to form dental composite is 43% wt.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Polímeros
/
Poliuretanos
/
Padrões de Referência
/
Fenômenos Biomecânicos
/
Resinas Acrílicas
/
Teste de Materiais
/
Resinas Compostas
Idioma:
Malaiala
Revista:
The Medical Journal of Malaysia
Ano de publicação:
2004
Tipo de documento:
Artigo
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