Purpose: To evaluate the failure patterns of teeth restored with both cast metal and fiber posts after fatigue cycling. Materials and Methods: Thirty-five crownless human teeth subdivided into 5 groups were subjected to 2 X 10(6) 100-N fatigue cycles at 8 Hz under 37 degrees C water. Results: No root fatigue fractures were recorded. High microleakage values were found in specimens that survived fatigue. No statistically significant relationships were found for fatigue (P > .4), fracture strength (P > .8), and microleakage (P > 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.

Fatigue resistance of restored endodontically treated teeth: A multiparametric analysis

PALANO, Antimo;
2006-01-01

Abstract

Purpose: To evaluate the failure patterns of teeth restored with both cast metal and fiber posts after fatigue cycling. Materials and Methods: Thirty-five crownless human teeth subdivided into 5 groups were subjected to 2 X 10(6) 100-N fatigue cycles at 8 Hz under 37 degrees C water. Results: No root fatigue fractures were recorded. High microleakage values were found in specimens that survived fatigue. No statistically significant relationships were found for fatigue (P > .4), fracture strength (P > .8), and microleakage (P > 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/27747
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