Influence of the Digital Design and Manufacturing Method on the Microleakage of Indirect Restorations

This applied research project analyzes the influence of digital design and manufacturing methods on the microleakage of indirect dental restorations. Given the increasing adoption of CAD-CAM and 3D printing technologies, it is essential to understand how these techniques affect marginal sealing, a critical factor in preventing bacterial infiltration and long-term restoration failure. The study employs a quantitative, observational, cross-sectional approach, evaluating 100 standardized restorations for upper central incisors (50 milled and 50 3D printed). Samples undergo thermocycling and staining with 2% methylene blue, followed by stereomicroscopic analysis to determine the degree of tracer penetration. The expected results will provide a solid scientific basis to guide dentists in selecting manufacturing technologies, thereby improving treatment durability. Furthermore, the findings will be integrated into the dental curriculum at the Universidad Politécnica Salesiana and disseminated through publications in indexed journals, contributing to the advancement of dental biomaterials.<br/><br/><b>Goal</b>: <br/>To evaluate and compare the microleakage levels in indirect restorations fabricated via subtractive manufacturing (CAD-CAM milling) and additive manufacturing (3D printing). The goal is to determine differences in marginal sealing and fit between both methods to optimize clinical quality.<br/><br/><b>Research lines</b>: <br/>Dental biomaterials