In Vitro Comparative Evaluation of Microleakage and Environmental pH Influence in Primary Molars Restored with Self-Curing Bulk-Fill Composite, Light-Curing Bulk-Fill Composite, and Conventional Composites

Description :

Currently, composite restorations face several challenges. One of the primary concerns is ensuring their durability and wear resistance in the dynamic oral environment, particularly in children. A major drawback is polymerization shrinkage, which can create stress at the interface between the tooth and the restoration. This shrinkage can lead to micro-leakage and, ultimately, secondary caries (2). Bulk fill composites (BFC) are claimed to have low shrinkage stress and lead to less post-operative sensitivity. BFC have an increased translucency that permits deeper transmission of the light and can be applied in a single increment with a thickness up to four mm-five mm (8). Smart Dentine Replacement SDR® (Dentsply, Sirona) is an example of bulk-fill composite resin. This restorative material claims to achieve a gap free restoration, since it can be placed in one increment (8). A self-curing bulk fill composite restorative material composed of BPA- free resin matrix and IonGlass™ fillers has recently been put on the market (STELA®, SDI, Australia). It results from a new technology that claims to simplify the application, eliminate the need for layering and reduce chairside time. Additionally, the presence of fluoride, calcium, and strontium ions supports preventive treatment by enhancing remineralization and long-term tooth protection. According to the manufacturer, it provides excellent durability, biocompatibility and ease of use, making it a reliable choice for dental restorations in pediatric patients (8). This type of restoration may provide many advantages over other restorations for pediatric patients (8).

Titulaire :
CHEDID Nada

Contact USJ :
nada.chedid@usj.edu.lb

Chercheur(s) :
Pr Nada CHEDID

Projet présenté au CR, le : 01/10/2025

Projet achevé auprès du CR : 31/07/2026