Aleksandra Jankowska

Background/Objectives: This systematic review and meta-analysis aimed to compare the mechanical and surface properties of three-dimensional (3D) printed and conventionally polymerized acrylic resins. Methods: A comprehensive search of four electronic databases (PubMed, Embase, Scopus, and Web of Science) was conducted to identify in vitro studies evaluating impact strength, elastic modulus, surface hardness, and surface roughness. Study quality was assessed using design-specific evaluation tools. When sufficient homogeneous data were available, a meta-analysis was performed. Results: The initial search yielded 942 potentially relevant records. Fifteen studies met the criteria for qualitative synthesis, and 13 were included in the meta-analysis. All studies were in vitro and were rated as having moderate to high methodological quality. Conclusions: Although conventional acrylic resins currently demonstrate superior mechanical strength, 3D-printed materials exhibit comparable surface properties and continue to evolve rapidly. Additive manufacturing technologies show promise as a viable and effective alternative for future prosthodontic applications.

This critical narrative review presents the concepts and methods that have been or are currently applied in the treatment of periapical tissue changes in mature and immature permanent teeth. Treatment success is defined as the healing of the inflammatory lesion in permanent teeth and, additionally, the completion of root development in immature teeth. Background/Objectives: Endodontics focuses on the prevention and treatment of diseases affecting the dental pulp and periapical tissues. Periapical changes have been managed using various methods depending on factors such as the extent of the lesion and the stage of root and apical development. Conventional root canal treatment, revitalization, and apexification have all been employed. Methods: Three databases (PubMed, Scopus, and Web of Science) were searched for studies discussing different treatment approaches, materials, and the efficacy of techniques used over time in mature and immature permanent teeth. Results: This review includes seven case reports, seven case series, and three cohort studies, each detailing the treatment method, case characteristics, follow-up period, and treatment outcomes. Conclusions: Modern materials have significantly improved the outcomes of revitalization and apexification procedures. These methods can now compete with or even surpass the clinical effectiveness of conventional root canal therapy.