316L stainless steel 45S5 Bioglass® Bioengineering 4.0 CAD/CAM methods CBCT tomography COVID-19 pandemic CST Co-Cr dental alloys Dentistry 4.0 FEA Industry 4.0 MSM Ni-Cr-Mo Resilon SARS-CoV-2 pandemic SLM SPEC strategy Technology: general issues Ti(C, N) coating Ti6Al4V dental alloy V-shaped tooth defects additive digital light printing additive manufacturing additive manufacturing technologies antimicrobial properties bioactive glass bioengineering biomaterials biomedical implants biomedical materials