Objectives: To evaluate the failure patterns of teeth restored with both cast metal and fiber posts after fatigue cycling. Materials and methods: 35 crownless human teeth subdivided in 5 groups were subjected to 2 x 106, 100 N fatigue cycles at 8 Hz under 37°C water. Results: No roots fatigue fractures were recorded. High microleakage values were found also in fatigue survived specimens. Statistical significance: fatigue P >0.4; fracture strength P >0.8; microleakage P >0.1; Conclusions: Cast-metal and fiber posts undergo insidious microscopic adhesive failures at similar levels. Increasing the post diameter and/or post stiffness could improve the core stabilization.
Baldissara P, Di Grazia V, Palano A, Ciocca L. (2006). Fatigue resistance of restored endodontically treated teeth. a multiparametric analysis. THE INTERNATIONAL JOURNAL OF PROSTHODONTICS, 19 (1), 25-27.
Fatigue resistance of restored endodontically treated teeth. a multiparametric analysis.
BALDISSARA, PAOLO;CIOCCA, LEONARDO
2006
Abstract
Objectives: To evaluate the failure patterns of teeth restored with both cast metal and fiber posts after fatigue cycling. Materials and methods: 35 crownless human teeth subdivided in 5 groups were subjected to 2 x 106, 100 N fatigue cycles at 8 Hz under 37°C water. Results: No roots fatigue fractures were recorded. High microleakage values were found also in fatigue survived specimens. Statistical significance: fatigue P >0.4; fracture strength P >0.8; microleakage P >0.1; Conclusions: Cast-metal and fiber posts undergo insidious microscopic adhesive failures at similar levels. Increasing the post diameter and/or post stiffness could improve the core stabilization.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
