Influence of glass fiber post joint for their retention: a scientific systematic literature review

Relevance of the problem and aim of the work: restoring anatomy and function of endodontically treated teeth using glass fiber posts remains a challenge for dentist because of different clinical situations and the variety in the market of glass fiber posts and materials using for cementing posts. Good retention properties, close elasticity modulus of dentine for teeth restorations are reached using glass fiber posts, which reduces risk of root fracture. However, one of the complication of this technique in the clinic work is a loss of retention of glass fiber post. Therefore, it is important to determine the impact for the glass fiber posts-cement-tooth joint sturdiness using different cementation protocols, surface preparation of glass fiber posts and application of cement technique into the root canal. Material and the methods: an electronic literature search from Pubmed database published from February 15th of 2012 to February 15th of 2017 was conducted. Sequential screening at the title, abstract and full text levels were performed. In vitro studies in the English language that had reported joint strength between glass fiber posts-cement-tooth cementing with dual-curing resin cement with 3 step etch-and-rinse adhesive system or self-etch dual-curing resin cement, the influence of the surface preparation of glass fiber post before cementing and glass fiber post-cement-tooth dependence of an cement application technique were included. Results: the search resulted in 11 articles meeting the inclusion criteria. 10 more articles were used for introduction and discussion. In those studies 225 human teeth, 60 bovine teeth, 525 glass fiber posts, 5 kinds of cements were involved. Conclusions: significantly higher share of the authors denied a statistically significant difference between the glass fiber post-cement-tooth connection strength using dual-curing resin cement with 3 step etch-and-rinse adhesive system or using self-etch dual-curing cement. All authors unambiguously accepted that glass fiber posts surface preparation and application technique of cement into the root canal affects glass fiber post-cement-tooth strength of the joints