Page 10 - tech fest 2025 אשדוד חוברת תקצירים

10
Characterization of 3D-Printed Cobalt-Chrome Alloy for Dental Applications
ChE-A-03
Stav Alfia; stavalfia2000@gmail.com
Advisor: Dr. Guy Ben Hamu
SCE - Shamoon College of Engineering Ashdod
The growing demand for durable, biocompatible materials in Dentistry has highlighted cobalt- chromium (Co-Cr) alloys for their mechanical strength and corrosion resistance. Traditional casting methods often introduce defects that compromise implant integrity. This study explores the advantages of additive manufacturing (3D printing) for Co-Cr dental components, focusing on how build orientation affects corrosion behavior in simulated oral conditions. Electrochemical methods:‘open circuit potential’ (OCP);‘potentiodynamic polarization’ (PDP); and ‘electrochemical impedance spectroscopy’ (EIS) were used to evaluate performance. The findings provide valuable insights into the corrosion resistance of 3D-printed Co-Cr alloys, with implications for improving implant longevity and clinical outcomes.
Keywords: additive manufacturing, cobalt-chromium alloys, corrosion behavior, dental implants, electrochemical analysis
Development of Lamin Nanofilament-SDBS Bioadhesives
ChE-A-04
Nissim Arviv; nissimarv@gmail.com
Advisor: Dr. Kfir Ben-Harush
SCE - Shamoon College of Engineering, Ashdod
Bioadhesives offer sustainable alternatives to petrochemical-based adhesives, particularly for structural applications, where strong adhesion, biocompatibility and biodegradability are critical. This project develops a novel bioadhesive by combining lamin nanofilaments—intracellular proteins with 105 basic amino acids, including lysine—with sodium dodecylbenzene sulfonate (SDBS) via electrostatic complexation. Inspired by polypeptide-SDBS systems leveraging cation-π, electrostatic interactions and the very high toughness of lamin fibers, our goal is to create a high-performance bioadhesive for diverse applications. Other goals include: optimizing the lysine-to-SDBS ratio; achieving superior mechanical and adhesive properties; ensuring biocompatibility and controlled degradation; and establishing a scalable production process to promote environmental sustainability and enhanced performance.
Keywords: bioadhesive, electrostatic interactions, lamin, nanofilaments, SDBS