The study was conducted in order to evaluate and compare the mechanical characteristics, release of fluoride ions and temperatures produced during the polymerization process of specific dental materials (Twinky Star, Boston) utilized for cavity restoration in primary teeth. The research encompassed the assessment of various factors such as physical attributes (density), mechanical properties (Vickers hardness (HV), Young’s modulus (E)) of dental tissues (enamel, dentin), and dental restorations, as well as the measurement of the highest temperatures attained during the polymerization of materials.