Risk factors for failure of glass fiber‐reinforced composite post restorations: a prospective observational clinical study

Abstract

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.

Choice of Endodontic Fiber Posts and its Influence on Dental Malpractice: An in vitro Evaluation

“…JCDP their elastic modulus is similar to that of dentin usually leading to fewer and more favorable fracture pattern as demonstrated by several in vivo [10][11][12] and in vitro studies. [13][14][15][16] Although posts are necessary to retain coronal build-up materials, they do not reinforce roots and may even weaken them through loss of radicular dentin necessitated by post space preparation, 6,17 while several studies also suggested that glass fiber posts contributed to the reinforcement and strengthening of endodontically treated teeth under full coverage crowns.…”

Contemporary Classification of Post-Core Systems

“…Bu başarısızlığın nedeninin bu dişlere etki eden kuvvetlerin, kontakların varlı-ğına rağmen, bukkal-lingual yönde olması olarak belirtilmiştir. 77 Fiber postların en sık karşılaşılan başarısızlık sebeplerinden biri de retansiyon kaybıdır ve bu restorasyonun ömrünü etkileyen en önemli faktördür. 78 Fiber postların kök kanalı içerisindeki tutuculuğu, postun tipi, şekli, uzunluğu, postun yüzey özellikleri, kullanılan yapıştırıcı ajanın tipi gibi çeşitli faktörler-den etkilenir.…”

Knowledge and Practice of Restoring Endodontically Treated Teeth by Dentists in Panevezys

“…After root canal treatment, teeth are structurally damaged, a large amount of tooth structure is lost, and teeth are much more weaker (2) . Previous studies have shown that the strength of the endodontically treated teeth depends not only on the remaining dentin (3) , and also on the periapical status and position of the tooth, the number of adjacent teeth, and occlusal contacts (4) . However, the prognosis of an endodontically treated tooth depends on endodontic procedures, and it is influenced by post-endodontic restoration (5) .…”