A custom-made novel design for temporomandibular joint prosthesis using finite element method: Self-pinned TMJ prosthesis

Kose S., SOFUOĞLU H.

JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1177/03093247251313638
  • Dergi Adı: JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

This study demonstrates a new self-pinned temporomandibular joint (TMJ) prosthesis by reducing the load on the bone and, hence, tissue damage. In this new customized model, a 3D model of the intact mandibula was obtained by means of computer-aided design (CAD) using computed tomography (CT) scan images of a 34-year-old man and then investigated using the finite element method (FEM). The self-pinned TMJ prosthesis with fewer screws was mounted on the broken mandibula (lower jawbone) to create the implanted mandibula, which was then analyzed numerically via FEM. A number of different self-pinned TMJ prosthesis models were also created, and their functional performances under physiological loading were investigated to obtain ideal pin-screw structures. Moreover, alternative prosthetic fixation studies have also been carried out to facilitate surgeons in fixing the self-pinned TMJ prosthesis to the chin. The self-pinned TMJ prosthesis (P2BH-C) developed in the present study has led to a great reduction in stresses, which were well within elastic limits for all prosthetic components compared to the commercial prosthetic model. The developed prosthesis was able to reduce hard and soft tissue damage, which can provide surgeons with a more comfortable and controlled range of motion to avoid damaging the nerves.