Effect of time and light intensity on the adhesion between fiber posts and root dentin: A literature review

Gilberto Antonio Borges, Laís Carvalho Martins, Anália Gabriella Borges Ferraz, Anna Luiza Szesz, Thiago Assunção Valentino, Luis Henrique Borges, Saturnino Calabrez-Filho

The characteristics involved in the mechanism of adhesion between fiber post, cementum and root dentin have been extensively studied in different approaches, including treatments on the surface of the post and/or dentine, characteristics of the intraradicular fiber post and also the materials used for its cementation. However, the adhesion depends directly on the polymerization and degree of conversion of the resinous monomers, which are related to the transmission of light through the root canal. Studies that evaluated the amount of light energy transmitted to the root canal found a significant reduction with the increase in depth, where even without the post, the light intensity seems to decrease to insufficient levels for adequate polymerization, especially in the apical third. To overcome these problems, professionals were advised to use a high-intensity light unit and/or prolong the time of exposure to light. In view of the above, it is important to identify how much irradiated light density and time can influence the adhesive properties in restorations with translucent post on pulped teeth.

Keywords: Polymerization. Fiber posts. Root dentin.

How to cite: GA, Martins LC, Ferraz AGB, Szesz AL, Valentino TA, Borges LH, Calabrez-Filho S. Effect of time and light intensity on the adhesion between fiber posts and root dentin: A literature review. J Clin Dent Res. 2018 May-Aug;15(2):34-43. DOI: https://doi.org/10.14436/2447-911x.15.2.034-043.oar

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