AIMS: The aim was to evaluate the incidence of root fracture of endodontically treated teeth reinforced with glass-fiber posts and metal posts luted with different luting cements. MATERIALS AND METHODS: Forty maxillary central incisors were sectioned at 1 mm of the cementoenamel junction and endodontically treated. The teeth were divided into four groups (n = 10) and restored with prefabricated metal posts and glass-fiber posts luted with resin-based luting cement and glass ionomer cement. Core built up was done using composite resin. The fracture strength was evaluated using an Instron universal testing machine (Model 4206, Instron Corp., Canton, MA). The results were recorded. STATISTICAL ANALYSIS USED: The Kruskal-Wallis test analysis test was used to analyze the data. RESULTS: Prefabricated metal post was statistically superior to the glass-fiber posts. Posts luted with resin-based luting cement were superior in fracture strength than glass ionomer cement. CONCLUSIONS: Teeth restored with prefabricated metal posts present higher fracture strength than those reinforced with glass-fiber posts. Posts luted with resin-based luting cement showed higher fracture strength than glass ionomer cement.
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