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Risk factors for failure of glass fiber‐reinforced composite post restorations: a prospective observational clinical study
Author(s) -
Naumann Michael,
Blankenstein Felix,
Kießling Saskia,
Dietrich Thomas
Publication year - 2005
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.2005.00257.x
Subject(s) - dentistry , hazard ratio , glass fiber , medicine , posterior teeth , confidence interval , post and core , fiber reinforced composite , orthodontics , materials science , fiber , crown (dentistry) , composite material
Glass fiber‐reinforced endodontic posts are considered to have favorable mechanical properties for the reconstruction of endodontically treated teeth. The aim of the present investigation was to evaluate the survival of two tapered and one parallel‐sided glass fiber‐reinforced endodontic post systems in teeth with different stages of hard tissue loss and to identify risk factors for restoration failure. One‐hundred and forty‐nine glass fiber‐reinforced endodontic posts in 122 patients were followed‐up for 5–56 months [mean ± standard deviation (SD): 39 ± 11 months]. Glass fiber‐reinforced endodontic posts were adhesively luted and the core was built with a composite resin. Cox proportional hazards models were used to evaluate the association of clinical variables and failure rate. Higher failure rates were found for restorations of anterior teeth compared with posterior teeth [Hazard‐Ratios (HR): 3.1; 95% confidence interval (CI): 1.3–7.4], for restorations in teeth with no proximal contacts compared with at least one proximal contact (HR: 3.0; 95% CI: 1.0–9.0), and for teeth restored with single crowns compared with fixed bridges (HR: 4.3; 95% CI: 1.1–16.2). Tooth type, type of final restoration and the presence of adjacent teeth were found to be significant predictors of failure rates in endodontically treated teeth restored with glass fiber‐reinforced endodontic posts.