Rosana Carlosama Rodriguez, Maria Soledad Peñaherrera Manosalvas, Camilo Pulido, Cristian Sánchez
European Endodontic Journal - 2025;10(6):525-531
Rosana CARLOSAMA RODRIGUEZ,1 Maria Soledad PEÑAHERRERA MANOSALVAS,1 Camilo PULIDO,2 Cristian SÁNCHEZ1Effect of Pre-endodontic Sealing on the Microleakage of Temporary Restorative Materials After Endodontic Treatment: An In Vitro Study This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.1*Posgrados Odontología, Universidad de los Hemisferios, Facultad de Ciencias de la Salud, Quito, Ecuador 2+Departamento de Rehabilitación Oral, Universidad San Francisco de Quito USFQ, Escuela de Odontología, Quito, Ecuador *Postgraduate Dentistry, Hemisphere University, Faculty of Health Sciences, Quito, Ecuador +Department of Oral Rehabilitation, San Francisco de Quito University USFQ, Faculty of Dentistry, Quito, Ecuador Carlosama Rodriguez et al. Pre-endodontic Sealing and Microleakage of Temporary Restorative Materials526 EUR Endod J 2025; 10: 525-531 Several studies have explored the marginal sealing effective- ness of temporary endodontic sealing materials (7-13). Most of these thorough studies have evaluated the sealing perfor- mance of such materials under conditions aligned with the four-step scoring criteria established by Lee et al. (14). The ma- jority of evidence suggests that temporary restorations may not be effective in sealing the cavity until the final restoration is completely completed (6, 15). Pre-endodontic sealing (PES) was described by Pashley et al. in 1992 (16). This approach requires sealing freshly exposed dentin surfaces using an adhesive system to achieve optimal bonding (17). PES is derived from immediate dentin sealing (IDS) and resin coating techniques, which involve applying the dentin bonding agent and/or a resin coating immediately after dentin preparation (18, 19). Additionally, the application of this hydrophobic coating (especially in simplified adhesive systems) and a resin composite build-up is increasingly fa- vored to bolster the adhesive qualities of the final restoration, maintain the integrity of dentin and its smear layer against endodontic irrigation, simplify the process of rubber dam iso- lation, avert fractures in compromised teeth, and enhance the aesthetic appearance during treatment (20, 21). On the other hand, when PES is performed, a marginal gap could persist between the temporary restoration and restor- ative material (adhesive or composite). Some studies have assessed the sealing capability of temporary restorations, but there is limited evidence evaluating the impact of PES on the marginal sealing of temporary restorations (22). Thus, this study aimed to investigate the ability to achieve marginal sealing between different commercial temporary re- storative materials in exposed dentin or PES. The null hypoth- eses tested in this research are: first, that there are no differ- ences in microleakage between cavities with exposed dentin and those treated with the PES technique; and second, among temporary restorative materials.
