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Compressive characteristics of an internally threaded post system.

K A Laurell·P O'Neilly·W M Johnston
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Abstract

PURPOSE: The effects of oblique compressive forces were evaluated for extracted teeth restored with posts of solid and internally threaded designs. MATERIALS AND METHODS: A group of 25 roots was restored with crowns supported by Para-post dowels and pin-retained composite resin cores, and a second group was restored with gold copings cast to internally threaded stainless steel-post prototypes. Samples were then embedded in epoxy resin and loaded at 45 degrees until failure. Failure force and type were statistically analyzed to determine statistical difference (P < .05) between groups. RESULTS: No statistical difference was shown between groups for either fracture force or type. CONCLUSIONS: The internally threaded post system resisted oblique loading forces similarly to a solid post system.

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Analysis of VarianceChi-Square DistributionComposite ResinsCompressive StrengthCrownsDental Stress AnalysisEquipment DesignEquipment Failure AnalysisHumansMaterials TestingPost and Core TechniqueRandom AllocationStainless SteelTooth, NonvitalComparative StudyJournal ArticleResearch Support, Non-U.S. Gov't

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K A Laurell, P O'Neilly, W M Johnston. 1996. Compressive characteristics of an internally threaded post system.. https://doi.org/10.1111/j.1532-849x.1996.tb00283.x

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