Publications by authors named "Haiyi Qin"
Background And Objective: Artificial total joint replacement is an important method of temporomandibular joint (TMJ) reconstruction, which has been advocated for TMJ osteoarthrosis, ankylosis, tumors, and other diseases. We designed one type of standard TMJ prosthesis fit for Chinese patients. This study aimed to explore the biomechanical behavior of the standard TMJ prosthesis using finite element analysis and selects an optimal screw arrangement scheme for clinical application.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates how removing the coronoid process affects stress distribution during the reconstruction of the temporomandibular joint (TMJ) with costochondral grafts.
- Using finite element analysis, researchers created models that varied the distance of mandibular advancement (ranging from 0 to 8 mm) with and without coronoidectomy.
- Results show that keeping the coronoid process helps maintain mechanical balance, while its removal leads to increased stress and shear force, especially with greater mandibular advancement, which could risk fractures at the cartilage junction.
Biomechanical analysis of a temporomandibular joint prosthesis for lateral pterygoid muscle reattachment.
Oral Surg Oral Med Oral Pathol Oral Radiol
October 2022
Objective: To analyze the biomechanical properties of a novel temporomandibular joint (TMJ) prosthesis with an attachment area for the lateral pterygoid muscle (LPM).
Study Design: Three prosthesis models were created and compared using finite element analysis for the displacement, stress, and strain when simulating the maximum bite force loading. A verification experiment and a compression test were conducted.
This study is the first attempt to explore the reason of costochondral graft fracture after lengthy mandible advancement and bilateral coronoidectomy by combining finite element analysis and mechanical test. Eleven groups of models were established to simulate costochondral graft reconstruction in different degrees of mandible advancement, ranging from 0 to 20 mm, in 2 mm increment. Force and stress distribution in the rib-cartilage area were analyzed by finite element analysis.
View Article and Find Full Text PDFBackground: Developmental dysplasia of the hip (DDH) is the most common deformity of the lower extremity in children. The biomechanical change during closed reduction (CR) focused on cartilage contact pressure (CCP) has not been studied. Thereby, we try to provide insight into biomechanical factors potentially responsible for the success of CR treatment sand complications by using finite element analysis (FEA) for the first time.
View Article and Find Full Text PDFPurpose: This work aims to evaluate the biomechanical behavior of Chinese customized three-dimensional (3D)-printing total temporomandibular joint (TMJ) prostheses by means of finite element analysis.
Methods: A 3D model was established by Mimics 18.0, then output in a stereolithography (STL) format.