New fixation set-up designed for micro-tensile test / 实用口腔医学杂志
Journal of Practical Stomatology
; (6): 455-459, 2015.
Article
Dans Zh
| WPRIM
| ID: wpr-463012
Responsable en Bibliothèque :
WPRO
ABSTRACT
Objective:
To introduce a new fixation set-up for micro-tensile test.Methods:
Dentin-composite were bonded with AdperTM Single Bond 2 (SB2)and sectioned into stick-shaped specimens.Specimens from each tooth(n =6)were equally divided into Ciucchi's jig and the designed set-up(Control and experimental)groups for micro-tensile bond test according to the utilized fixa-tion set-up.The bonding interface failure mode was examined with field-emission scanning electron microscope (FESEM).Three-dimensional models of the two set-ups and the specimen were developed,stress distribution was analyzed by finite element analysis (FEA).Results:
The bond strength(MPa)of experimental and control group was 32.76 ±7.43 and 43.58 ±4.72(P <0.05),the ratio of mixed failure was 28 /36 and 20 /36(P <0.05)respectively.FEA showed that the designed set-up for fixing the sticks pro-vided a uniform stress distribution along the long axis of the specimen.FEA and failure mode analysis confirmed such uniform distri-bution was also concentrated at the bonding interface.Conclusion:
The new set-up is feasible for micro-tensile test.
Texte intégral:
1
Indice:
WPRIM
langue:
Zh
Texte intégral:
Journal of Practical Stomatology
Année:
2015
Type:
Article