An In vitro Comparison of Retention of Provisional Crowns Cemented with Provisional Cement Enriched with Three Different Additives

Abstract

Introduction: Dental caries remains a constant problem in clinical practice. The rates of recurrent caries around long-term provisional restorations may be even higher due to poor marginal adaptation and less stable materials. Since provisional crowns luted with provisional cement are susceptible to bacterial infiltration and caries, antibacterial and anticariogenic agents have been added to provisional cement, and retention of the provisional crown has been evaluated in this study. Materials and Methods: Ten extracted maxillary first premolar teeth were selected. Standardised tooth preparation was done. A total of 40 provisional crowns were fabricated using tooth-coloured auto-polymerising acrylic resin. The prepared provisional crowns were divided into four groups of 10 crowns each. Crowns were cemented on the prepared teeth after enriching with the three solutions individually. All specimens were stored in 100% humidity at 37°C for 1 h, thermocycler 100 times between 5°C and 55°C with a dwell time of 10 s and then stored at 100% humidity at 37°C. Cemented crowns were subjected to tensile dislodgement force using a universal testing machine with a crosshead speed of 5 mm/min. Results: Provisional cement enriched with Profluorid Varnish has shown properties of the highest tensile dislodgement force, with chlorhexidine-reduced retention. Conclusion: The present study concluded that Profluorid Varnish, as an additive in non-eugenol provisional cement (Provicol), is more effective in increasing retention.