[Experimental study on the optical properties of different-translucency zirconia-ceramic restorations].
Shanghai Kou Qiang Yi Xue
; 32(2): 154-157, 2023 Apr.
Article
en Zh
| MEDLINE
| ID: mdl-37153996
ABSTRACT
PURPOSE:
The purpose of this in vitro study was to measure the color difference(â³E) on titanium alloy background and translucency parameter(TP) of four kinds of zirconia-based all-ceramic specimens, providing a clinical reference for restoring grayish abutment.METHODS:
Four groups with a total of 24 ceramic specimens were fabricated to a final specimen dimension of 14 mm×14 mm×1.5 mm, two kinds of zirconia with different translucencyï¼Beitefu high-translucency, Cercon low-translucencyï¼and their corresponding body porcelain at the shade of A2 were used as followedhigh-translucency zirconia sintered dentine porcelain(Group A),low-translucency zirconia sintered dentine porcelain(Group B),high-translucency zirconia sintered opaque and dentine porcelain(Group C),low-translucency zirconia sintered opaque and dentine porcelain(Group D).The color parameters of the specimens under two backgrounds (titanium alloy and shade A3 light-activated resin-based composite) were measured by Shade Eye NCC colorimeter, then the â³E value was determined by the relevant equations. The color parameters under black and white background were measured, and TP value was calculated. The experimental data were analyzed with SPSS 17.0 software package.RESULTS:
There was significant difference of the TP value and the â³E value among four groups specimens(Pï¼0.05), the TP value was arranged as follows group Dï¼group Cï¼group Bï¼group A. The specimen used with opaque porcelain showed significantly reduced translucency. The â³E value was arranged as follows group D ï¼ group C ï¼ group B ï¼ 1.5 ï¼ 2 ï¼group A, the â³E value of group A cannot be accepted in clinic.CONCLUSIONS:
The restoration of low-translucency zirconia sintered translucency veneering ceramic has better translucency, with value of â³Eï¼1.5 when used on the grayish abutment, which has a good aesthetic performance.
Buscar en Google
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Titanio
/
Circonio
/
Cerámica
/
Porcelana Dental
Idioma:
Zh
Revista:
Shanghai Kou Qiang Yi Xue
Asunto de la revista:
ODONTOLOGIA
Año:
2023
Tipo del documento:
Article