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ORIGINAL RESEARCH article

Front. Bioeng. Biotechnol.
Sec. Biomaterials
Volume 12 - 2024 | doi: 10.3389/fbioe.2024.1501815
This article is part of the Research Topic Dental Biomaterials: Addressing Modern Challenges and Shaping Future Procedures View all articles

Biomechanical Analysis of Stress Distribution and Failure Risk in Mandibular Incisors Restored with Resin-Bonded Fixed Partial Dentures Using CAD/CAM Materials and Restoration Designs

Provisionally accepted
Hailiang Wang Hailiang Wang 1*Jingwen Cai Jingwen Cai 1*Jie Liang Jie Liang 2*Yong Wang Yong Wang 3*Yunsong Liu Yunsong Liu 3*
  • 1 Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
  • 2 Department of Implantation, Yantai Stomatological Hospital of Binzhou Medical University, Yantai, China
  • 3 Department of Prosthodontics, Peking University Hospital of Stomatology, Beijing, Beijing Municipality, China

The final, formatted version of the article will be published soon.

    Computer-aided design/manufacturing (CAD/CAM) materials are widely used in resinbonded fixed partial dentures (RBFPDs), but their suitability across different designs has not been fully assessed. This study compares the stress distribution and failure probability of mandibular incisors restored by RBFPDs with various CAD/CAM materials.Finite-element models of single-and double-ended RBFPDs were created using conebeam computed tomography (CBCT) data. Five CAD/CAM materials (IPS e.max CAD, IPS e.max ZirCAD, Vita Enamic, Lava Ultimate, Vitablocs MarkII) were tested under vertical and oblique (45°) loading with a 100 N force. Stress distribution and failure risk were evaluated for each material and design.Oblique loading produced the highest stress and displacement for single-ended RBFPDs. Lava Ultimate had the largest displacement and principal stress, while IPS e.max ZirCAD showed the highest equivalent stress. IPS e.max CAD exhibited the lowest displacement and principal stress among double-ended RBFPDs under oblique loading.This study demonstrated that double-ended RBFPDs experience lower stress and strain compared to single-ended designs, particularly under oblique loading. Vita Enamic had the highest failure risk, while IPS e.max ZirCAD had the lowest. These insights into stress distribution and material performance offer valuable guidance for material selection and restoration design, aiming to improve the longevity and success of RBFPDs in mandibular incisor restorations.

    Keywords: Resin-bonded, Finite Element Analysis, Dental Prosthesis Design, Dental Stress Analysis, Anterior tooth loss

    Received: 25 Sep 2024; Accepted: 04 Nov 2024.

    Copyright: © 2024 Wang, Cai, Liang, Wang and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Hailiang Wang, Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
    Jingwen Cai, Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
    Jie Liang, Department of Implantation, Yantai Stomatological Hospital of Binzhou Medical University, Yantai, China
    Yong Wang, Department of Prosthodontics, Peking University Hospital of Stomatology, Beijing, 100081, Beijing Municipality, China
    Yunsong Liu, Department of Prosthodontics, Peking University Hospital of Stomatology, Beijing, 100081, Beijing Municipality, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.