The present study offers a systematic review of the current state of research on lattice structures manufactured by additive technologies for biomedical applications, with the aim of identifying common patterns, such as the use of triply periodic minimal surfaces (TPMS) for bone scaffolds, as well as technological gaps and future research opportunities. Employing the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology, the review process ensures methodological rigor and replicability across the identification, screening, eligibility, and inclusion phases. Additionally, PRISMA was tailored by prioritizing technical databases and engineering-specific inclusion criteria, thereby aligning the methodology with the scope of this field. In recent years, a substantial surge in interdisciplinary research has underscored the promise of architected porous structures in enhancing mechanical compatibility, fostering osseointegration, and facilitating personalized medicine. A growing body of literature has emerged that explores the optimization of geometric features to replicate the behavior of biological tissues, particularly bone. Additive manufacturing (AM) has played a pivotal role in enabling the fabrication of complex geometries that are otherwise unachievable by conventional methods. The applications of lattice structures range from permanent load-bearing implants, commonly manufactured through selective laser melting (SLM), to temporary scaffolds for tissue regeneration, often produced with extrusion-based processes such as fused filament fabrication (FFF) or direct ink writing (DIW). Notwithstanding these advances, challenges persist in areas such as long-term in vivo validation, standardization of mechanical and biological testing, such as ISO standards for fatigue testing, and integration into clinical workflows.

This document presents a review on cooling and lubrication methods in machining. A systematic search of information related to these methods was carried out based on the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology. The importance of the sustainability of machining processes is highlighted, as they represent between 10 and 17% of the total manufacturing cost of the final part and have negative environmental and health impacts. Although dry machining completely eliminates the use of cutting fluids, in many cases it produces unsatisfactory results due to the increase in temperature inside the tool, which requires prior analysis to ensure its viability compared to conventional techniques. On the other hand, semi-dry machining, which significantly reduces the volume of cutting fluids, is a more competitive alternative, with results similar to those of conventional machining. Other sustainable cooling and lubrication methods are also being investigated, such as cryogenic and high-pressure cooling, which offer better machining results than conventional processes. However, they have a high initial cost and further research is needed to integrate them into industry. While the combination of these cooling and lubrication methods could lead to improved results, there is a notable lack of comprehensive studies on the subject.

The present study undertakes a systematic review of the latest trends in sustainable manufacturing over the past five years, exploring future developments in technologies, methods, and strategies. Utilizing the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology, adapted to engineering, this research ensures transparency and reproducibility throughout the identification, screening, eligibility, and inclusion stages of the review process. A review of the extant literature identified several key terms that were frequently incorporated into research inquiries, including Industry 4.0, circular economy, additive manufacturing (AM), and the use of sustainable materials. The study’s main findings highlight the transformative role of digital technologies in fostering closed-loop systems and resource efficiency. For industry professionals, this signifies concrete prospects for enhancing operational efficiency, mitigating waste, and shifting towards more robust production models. Nonetheless, this review discloses persistent challenges, particularly for small- and medium-sized enterprises (SMEs). These challenges encompass elevated implementation costs and the intricacy of advanced digital solutions. The study’s findings indicate that while Industry 4.0 is a predominant catalyst for sustainable practices, its extensive adoption is impeded by substantial implementation costs and skill deficits. The study’s concluding remarks outline strategic directions for future research and policy, advocating for scalable, inclusive solutions to facilitate a global transition toward sustainable industrial systems.