Preface Laser Ablation of Yttrium Oxide Nano-Particles in Water and their Activity against Clinical Isolates (Gram Negative, Gram Positive, and Fungi) Study of the Effect of Laser Energy on the Biological Applications of Selenium Dioxide Nanoparticles Prepared by the Pulsed Laser Ablation Method The Effect of Various Surface Treatments and Joint Designs on the Flexural Strength of Repaired 3D-Printed Denture Base: In Vitro Study Surface Roughness and Microhardness of Monolithic Zirconia under Polishing and Glazing Using CAD/CAM Computer-Aided Design/computer-Aided Manufacturing Technology Transcutaneous Electrical Nerve Stimulation Unit for Therapeutic Purposes Pomegranate Seeds as a Sustainable Coagulant for Water Purification.