https://rmib.mx/index.php/rmib <center> <p><strong>MISSION</strong></p> <p align="left"><em>La Revista Mexicana de Ingeniería Biomédica</em> (The Mexican Journal of Biomedical Engineering, RMIB, for its Spanish acronym) is a publication oriented to the dissemination of papers of the Mexican and international scientific community whose lines of research are aligned to the improvement of the quality of life through engineering techniques.</p> <p align="left">The papers that are considered for being published in the RMIB must be original, unpublished, and first rate, and they can cover the areas of Medical Instrumentation, Biomedical Signals, Medical Information Technology, Biomaterials, Clinical Engineering, Physiological Models, and Medical Imaging as well as lines of research related to various branches of engineering applied to the health sciences.</p> <p align="left">The RMIB is an electronic publication continuously released since 2020, structured into three volumes (January, May, September) by the Mexican Society of Biomedical Engineering, founded since 1979. It publishes articles in spanish and english and is aimed at academics, researchers and professionals interested in the subspecialties of Biomedical Engineering.</p> <p><strong>INDEXES</strong></p> <p><em>La Revista Mexicana de Ingeniería Biomédica</em> is a quarterly publication, and it is found in the following indexes:</p> <p><img src="https://www.rmib.mx/public/site/images/administrador/índices_y_repositorios_(1100_×_1000 px).jpg" /></p> </center> Sociedad Mexicana de Ingeniería Biomédica A.C. en-US Revista Mexicana de Ingenieria Biomedica 0188-9532 <p>Upon acceptance of an article in the RMIB, corresponding authors will be asked to fulfill and sign the copyright and the journal publishing agreement, which will allow the RMIB authorization to publish this document in any media without limitations and without any cost. Authors may reuse parts of the paper in other documents and reproduce part or all of it for their personal use as long as a bibliographic reference is made to the RMIB. However written permission of the Publisher is required for resale or distribution outside the corresponding author institution and for all other derivative works, including compilations and translations.</p> https://rmib.mx/index.php/rmib/article/view/1618 <p style="font-weight: 400;">Additive manufacturing has established itself as a key technology in dentistry, enabling the manufacture of customized devices with precision and in reduced times. Among the most widely used filaments are polylactic acid (PLA) and glycol-modified polyethylene terephthalate (PETG), both with different properties that influence clinical performance. This study presents a comparative evaluation of PLA and PETG filaments in the generation of hydroxyapatite on 3D-printed pieces through hydrothermal treatment in simulated body fluid (SBF) solution. Dental models were printed with PLA and PETG filaments under controlled conditions and immersed in SBF for 7, 14, and 21 days. Modified pieces were characterized by infrared spectroscopy (IR-TF), X-ray diffraction (XRD), and scanning electron microscopy (SEM) to evaluate surface modifications and mineral formation. The results showed that PLA, due to its greater porosity and roughness, favored early hydroxyapatite nucleation, presenting a stable layer at 21 days. PETG showed slow nucleation, but at 21 days it showed characteristic hydroxyapatite agglomerates. Cytotoxicity tests with 3T3 fibroblasts confirmed that both materials maintained cell viability above 70%.</p> Jorge Carlos Ríos-Hurtado Frida Sofia Ibarra-Cazares Sergio Emmanuel González Pérez Sandra Cecilia Esparza-González Gustavo Soria-Arguello Copyright (c) 2026 Revista Mexicana de Ingenieria Biomedica https://creativecommons.org/licenses/by-nc/4.0/ 2026-06-16 2026-06-16 47 2 e1618 e1618 10.17488/RMIB.47.2.1618