Current concepts on the use and adhesive bonding of glass-fiber posts in dentistry: a review
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REVIEW
Open Access
Current concepts on the use and adhesive bonding of glass-fiber posts in dentistry: a review Aline Pinheiro de Moraes, Maximiliano Sérgio Cenci, Rafael Ratto de Moraes and Tatiana Pereira-Cenci* * Correspondence: [email protected] Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil
Abstract The aim of this study was to review and summarize the in vitro and clinical data on the use of glass-fiber posts concerning recent changes in the philosophy, materials, and technology that have impacted significantly the art and science of endodontic post placement. Original scientific papers or reviews listed in the Medline or ISI Web of Science databases from 1981 to 2013 were searched electronically using the following key words: endodontically-treated teeth, glass-fiber post, dentistry, resin cement, silane, and adhesive. The literature supports the use of a post when the remaining coronal structure is insufficient to provide retention for the restoration. Concerning which post to select, glass-fiber posts offer two important advantages: the elastic modulus is similar to that of dentin, and these posts and the respective core build-ups are cemented by an adhesive technique. However, some issues remain unclear. Randomized controlled trials are needed to confirm whether the use of silane influences the bonding and whether self-adhesive resin cements constitutes a reliable clinical option. Overall, the use of fiber posts is an important clinical option in dentistry, but clinicians should be aware of the difficulties in achieving good adhesion within the root canal. Keywords: Adhesion; Bonding; Dentistry; Glass-fiber posts; Review
Introduction Intra-radicular posts have been used to provide anchorage for dental restorations for over 250 years [1]. In the past decades, the increasing demand for aesthetics has led to the development of metal-free post-and-core systems, especially fiber-reinforced epoxy posts. To ensure a successful aesthetical outcome, the post-and-core system needs to be tooth-colored, reflecting and transmitting light similarly to a natural tooth [2,3]. Fiber posts have been developed to improve the optical effects of aesthetic restorations [4,5] and are widely used for restoring endodontically-treated teeth with insufficient coronal tooth structure as a core for the restoration [6,7]. The use of posts in cases in which the tooth structure has been destroyed due to caries, trauma, or overaggressive endodontic procedures is gaining widespread acceptance among dental clinicians [8,9]. Together with the increased use of pre-fabricated posts, especially fiber posts, an increase has also been observed in the number of publications on this subject, testing different cementation protocols, adhesive systems, and cements and discussing the indications for posts’ use and the problems currently found in clinical practice. All this information should be revised and summarized to educate the dental practitioner about the curren
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