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Materials Science in

                                                                  Additive Manufacturing



                                        ORIGINAL RESEARCH ARTICLE
                                        Performance evaluation of artificial hip joints

                                        3D-printed through stereolithography using
                                        dental resin reinforced with titanium dioxide

                                        nanoparticles



                                        Bhre Wangsa Lenggana * , Rony Akbar Majid 2  , Ubaidillah * ,
                                                            1
                                                                                             2
                                        and Joko Triyono 2
                                        1 Department of Mechanical Engineering, Faculty of Engineering, Universitas Jenderal Soedirman,
                                        Purwokerto, Central Java, Indonesia
                                        2 Department of Mechanical Engineering, Faculty of Engineering, Universitas Sebelas Maret,
                                        Surakarta, Central Java, Indonesia



                                        Abstract

                                        Hip osteoarthritis is a degenerative joint disease commonly associated with aging.
                                        One effective treatment to restore patients’ quality of life is total hip arthroplasty,
            *Corresponding authors:     in which  the damaged hip  joint is replaced  with a prosthetic  implant. Currently,
            Bhre Wangsa Lenggana        there is a growing demand for customized artificial hip joints tailored to individual
            (bhre.lenggana@unsoed.ac.id)
            Ubaidillah                  anatomical dimensions. However, the conventional casting method generally used
            (ubaidillah_ft@staff.uns.ac.id)  to fabricate these implants is often considered ineffective. Additive manufacturing
            Citation: Lenggana BW,      technology, also known as 3D printing, has emerged as a promising alternative.
            Majid RA, Ubaidillah, Triyono J.   This  technology enables  the  fabrication  of  complex  designs  with  high  accuracy
            Performance evaluation of artificial   and customizable geometries and sizes without altering the physical components
            hip joints 3D-printed through
            stereolithography using dental resin   of the 3D printing machine. This study aims to develop a 3D-printed artificial hip
            reinforced with titanium dioxide   joint prosthesis using a dental photopolymer resin reinforced with titanium dioxide
            nanoparticles. Mater Sci Add   (TiO ) nanoparticles. The mechanical performance of the prostheses was evaluated
            Manuf. 2025;4(3):025200032.    2
            doi: 10.36922/MSAM025200032  through both experimental and simulated compression testing. Four concentrations
                                        of TiO  nanoparticles were tested, namely 0%, 1%, 3%, and 5%. The results showed
            Received: May 14, 2025           2
                                        that the prosthesis reinforced with 3%  TiO  nanoparticles exhibited the highest
                                                                             2
            1st revised: June 20, 2025  strength (717.2 N), while the one with 5% TiO  nanoparticles exhibited the lowest
                                                                               2
            2nd revised: June 30, 2025  strength (241.8 N).
            Accepted: June 30, 2025
                                        Keywords: Additive manufacturing; 3D printing; Titanium oxide nanoparticles; Hip joint
            Published online: August 1, 2025
                                        prosthesis; Stereolithography
            Copyright: © 2025 Author(s).
            This is an Open-Access article
            distributed under the terms of the
            Creative Commons Attribution
            License, permitting distribution,   1. Introduction
            and reproduction in any medium,
            provided the original work is   Osteoarthritis of the hip joint is commonly associated with aging and often results in
            properly cited.             difficulty performing activities such as walking or running. Other contributing factors
                                                                           1
            Publisher’s Note: AccScience   include obesity and injuries to the hip joint.  To improve the quality of life of patients
            Publishing remains neutral with   with hip osteoarthritis, total hip replacement surgery–a clinically and cost-effective
            regard to jurisdictional claims in
            published maps and institutional   procedure–is often recommended. According to a study conducted in the United States,
                                                                                                             2
            affiliations.               over 300,000 patients with hip osteoarthritis undergo hip replacement surgery annually.

            Volume 4 Issue 3 (2025)                         1                         doi: 10.36922/MSAM025200032
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