1
|
Peng WM, Cheng KJ, Liu YF, Nizza M, Baur DA, Jiang XF, Dong XT. Biomechanical and Mechanostat analysis of a titanium layered porous implant for mandibular reconstruction: The effect of the topology optimization design. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 124:112056. [PMID: 33947550 DOI: 10.1016/j.msec.2021.112056] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 03/12/2021] [Accepted: 03/20/2021] [Indexed: 11/18/2022]
Abstract
A porous scaffold/implant is considered a potential method to repair bone defects, but its mechanical stability and biomechanics during the repair process are not yet clear. A mandibular titanium implant was proposed and designed with layered porous structures similar to that of the bone tissue, both in structure and mechanical properties. Topology was used to optimize the design of the porous implant and fixed structure. The finite element analysis was combined with bone "Mechanostat" theory to evaluate the stress and osteogenic property of the layered porous implant with 3 different fixation layouts (Model I with 4 screws, Model II with 5 screws and Model III with 6 screws) for mandibular reconstruction. The results showed that Model III could effectively reduce the stress shielding effect, stress within the optimized implant, defective mandible, and screws were respectively dropped 48.18%, 44.23%, and 57.27% compared to Model I, and the porous implant had a significant stress transmission effect and maintained the same stress distribution as the intact mandible after the mandibular defect was repaired. The porous implant also showed a significant mechanical stimulation effect on the growth and healing of the bone tissue according to the bone "Mechanostat" theory. The combination of porous structure with the topology technique is a promising option to improve the mechanical stability and osteogenesis of the implant, and could provide a new solution for mandibular reconstruction.
Collapse
Affiliation(s)
- Wen-Ming Peng
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China; National International Joint Research Center of Special Purpose Equipment and Advanced Processing Technology, Zhejiang University of Technology, Hangzhou 310023, China
| | - Kang-Jie Cheng
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China; National International Joint Research Center of Special Purpose Equipment and Advanced Processing Technology, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yun-Feng Liu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China; National International Joint Research Center of Special Purpose Equipment and Advanced Processing Technology, Zhejiang University of Technology, Hangzhou 310023, China.
| | - Mark Nizza
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Dale A Baur
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Xian-Feng Jiang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China; National International Joint Research Center of Special Purpose Equipment and Advanced Processing Technology, Zhejiang University of Technology, Hangzhou 310023, China
| | - Xing-Tao Dong
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China; National International Joint Research Center of Special Purpose Equipment and Advanced Processing Technology, Zhejiang University of Technology, Hangzhou 310023, China
| |
Collapse
|
2
|
Lee UL, Kwon JS, Woo SH, Choi YJ. Simultaneous Bimaxillary Surgery and Mandibular Reconstruction With a 3-Dimensional Printed Titanium Implant Fabricated by Electron Beam Melting: A Preliminary Mechanical Testing of the Printed Mandible. J Oral Maxillofac Surg 2016; 74:1501.e1-1501.e15. [DOI: 10.1016/j.joms.2016.02.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/26/2016] [Accepted: 02/26/2016] [Indexed: 11/25/2022]
|
3
|
Aysel A, Göde S, Midilli R, Karcı HB. Reconstruction of Orbital Walls with Bone Cement in a Maxillectomy Patient. Turk Arch Otorhinolaryngol 2015; 53:183-187. [PMID: 29392004 DOI: 10.5152/tao.2015.588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 10/08/2014] [Indexed: 11/22/2022] Open
Abstract
Orbital wall defects occur because of trauma and secondary to oncologic surgery. Reconstruction of orbital bones is of most importance to ensure normal eye functions and cosmesis. Acrylic resin materials can be used instead of a bone in orbital wall defects that are secondary to the resection of tumors invading the orbita. Polymethyl methacrylate is one of the acrylic resin materials. In this study, the orbital wall reconstruction technique with bone cement after maxillectomy and results are reported.
Collapse
Affiliation(s)
- Abdülhalim Aysel
- Department of Otorhinolaryngology, Ege University School of Medicine, İzmir, Turkey
| | - Sercan Göde
- Department of Otorhinolaryngology, Ege University School of Medicine, İzmir, Turkey
| | - Raşit Midilli
- Department of Otorhinolaryngology, Ege University School of Medicine, İzmir, Turkey
| | - H Bülent Karcı
- Department of Otorhinolaryngology, Ege University School of Medicine, İzmir, Turkey
| |
Collapse
|
4
|
Brożyna B, Szymańska H, Ptaszyński K, Woszczyński M, Lechowska-Piskorowska J, Gajewska M, Rostkowska J, Chełmiński K, Bulski W, Krajewski R. Tissue response after implantation of pure titanium and bioresorbable screws in scapula with postoperative irradiation: an experimental study on rats. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 120:443-52. [PMID: 26346909 DOI: 10.1016/j.oooo.2015.06.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 06/25/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The study focuses on the comparison of tissue reaction to titanium and bioresorbable implants with and without postoperative irradiation on an animal model. MATERIALS AND METHODS Thirty-nine LEW/W rats were randomly assigned to experimental or control groups. One titanium and one bioresorbable screw (poly-L-lactide [PLLA] and L- and D-lactide poly-L/D-lactide [PDLLA]) were implanted into the left scapulas of 24 rats. Half of them received 30 Gy to the operation site and the other half received 42 Gy. In the control groups, 3 rats received 30 Gy, and 6 rats received 42 Gy to the scapula area without operation; and 6 rats had implants inserted as in the experimental group, but received no postoperative irradiation. The scapulas were removed 14 or 30 days after irradiation and a histologic analysis was performed. RESULTS The host tissue reaction to titanium and PLLA-PDLLA screws without postoperative irradiation was of similar intensity. In irradiated animals, the inflammatory tissue reaction was more evident around the titanium screws than around the bioresorbable screws, irrespective of the radiation dose and of the time that elapsed from the irradiation. The reaction was more evident on the 14th day than on the 30th day after the last radiation dose (70 and 86 days after surgery, respectively). The intensity of the inflammatory tissue reaction, irrespective of the implant type, was more intense in the group irradiated with 42 Gy. CONCLUSIONS PLLA-PDLLA implants appear to cause less tissue reaction after irradiation and could be safer reconstructive devices than titanium implants for patients undergoing surgery and adjuvant radiotherapy for cancer.
Collapse
Affiliation(s)
- Bogusław Brożyna
- Department of Head and Neck Cancer, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Hanna Szymańska
- Department of Genetics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Konrad Ptaszyński
- Department of Pathology, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Marek Woszczyński
- Department of Genetics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Joanna Lechowska-Piskorowska
- Department of Genetics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Marta Gajewska
- Department of Genetics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland.
| | - Joanna Rostkowska
- Department of Medical Physics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Krzysztof Chełmiński
- Department of Medical Physics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland.
| | - Wojciech Bulski
- Department of Medical Physics, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| | - Romuald Krajewski
- Department of Head and Neck Cancer, The Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Roentgen Str. 5, 02781 Warsaw, Poland
| |
Collapse
|