Flexure strength and color change of reused IPS Empress 2 / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 71-80, 2003.
Artigo
em Coreano
| WPRIM
| ID: wpr-124669
ABSTRACT
Development of new ceramic and esthetic need of patient increased the use of ceramic restorations. The purpose of this study was to confirm the possibility of recycling for IPS Empress2 which has a lot of advantages in esthetics. 1st, 2nd and 3rd pressed disc-shaped(10x1.5mm) IPS Empress 2 specimens were made with IPS Empress ingot(shade 200, Ivoclar, Liechtenstein) and pressing furnace(IPS Empress EP 500, Ivoclar, Liechtenstein). Flexure strength was measured with universal testing machine(Zwick 145641, Zwick, Germany), and color change and staining resistance of specimens were evaluated with colorimeter (Model TC-6FX, Tokyo Denshoku Co., Japan). The followings were drawn from this study 1. Flexure strength of the 1st, the 2nd, and the 3rd pressed specimens showed 236.78 MPa, 247.16MPa, and 220.72MPa, respectively. Flexure strength of the 2nd pressed specimens was higher than others, but there's no statistical difference between them. 2. The color difference between the 1st and the 2nd pressed specimens was 3.25, and that between the 1st and the 3rd pressed specimens was 3.63(P<0.05). 3. The color change after staining of the 1st, the 2nd, and the 3rd pressed specimens were 1.43, 2.64, and 1.45, respectively. In this study, reused IPS Empress 2 specimens showed insignificant change of flexure strength and stain resistance, but they showed some color change according to reuse. From this results, the limited possibility of reuse for IPS Empress 2 could be considered.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Cerâmica
/
Estética
/
Reciclagem
Limite:
Humanos
Idioma:
Coreano
Revista:
The Journal of Korean Academy of Prosthodontics
Ano de publicação:
2003
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS