GAP Australasian-Dentist-Mar Apr 2019

Category 98 AustrAlAsiAn Dentist C M Y CM MY CY CMY K contribution of biomedical engineers at OMX solutions (www.omx-solutions. com) who helped design, develop and produce the OMX tMJ prosthesis is also gratefully acknowledged. DECLARATION: Dr George Dimitroulis is a practicing Oral & Maxillofacial surgeon and Managing Director of OMX solutions Pty ltd, (www. omx-solutions.com ) a Melbourne based Medtech Company which developed and manufactured the tMJ prosthetic total joint replacement system described in this article that is referred to commercially as the OMX tMJ Prosthesis. the OMX tMJ prosthesis is approved for clinical use by the Australian therapeutic Goods Administration (tGA) as a Class iib implantable medical device (ArtG listing 276176) and is listed on the Prosthesis schedule. u All Correspondence: Dr George Dimitroulis Suite 5, 10th Floor, 20 Collins Street Melbourne Vic 3000 Tel: +61 03 9654 3799 Fax: +61 03 9650 3845 Mob: +61 0409 505 146 e-mail: geodim25@gmail.com References available – email: gapmagazines@optusnet.com.au of trialing all the different sizes during the operation. More often than not, the fit was less than ideal (Kanatsios et al 2018). in the last 5 years, new software in the form of solidworks, 3-matic and Mimics (Materialize – Belgium) has made it possible to design andmanufacture custom medical devices directly from the patient’s own radiological images. Furthermore, the recent introduction of 3D metal printing capabilities has made it practical to digitally manufacture the custom medical device directly from digital files, eliminating the laborious, inaccurate and expensive manual laboratory wax up and casting of each device. As a new medical device company based inMelbourne, OMX solutions offers a totally digital platform for creation of fully customized medical implants, including the groundbreaking Figure 15 – The severe ongoing TMJ pain experienced by patient significantly limited her mouth opening which made it difficult to eat and impossible for dental treatment despite all the conservative measures. Figure 17 – Design of the patient’s new TMJ prosthesis based on her CT scans. Once approved by the surgeon, the digital files of the TMJ implants are sent to the manufacturer for printing. Figure 19 – Profile of the patient 2 years after surgery showing no visible scarring. Figure 21 – OPG X-ray showing the two TMJ implants 2 years after surgery with no sign of infection or loosening of the screws. Figure 18 – Frontal x-ray view of the patient’s face and jaws showing the close adaptation of both TMJ implants to the mandibular ramus. Figure 20 – Exceptionally good mouth opening 2 years following her bilateral TMJ prosthetic total joint replacement surgery. Figure 16 – Conebeam CT scans of the patient’s condyles showing severe destruction of the articular surface. tMJ prosthetic total joint replacement system that was the first print-on-demand implantable tMJ medical device to be offered in Australia. the OMX tMJ prosthesis is a fully customized solution for patients with end-stage tMJ disease who have not responded to non-surgical treatment (Dimitroulis et al, 2018). the device is an Australian first which was developed over many years with the help of the Biomedical engineering Department at the university of Melbourne (Ackland et al 2017). since 2015, over 120 tMJ prosthetic devices have been implanted in patients from all over Australia who have derived significant benefit from the latest technology which is currently only available in Australia. the OMX tMJ prosthesis is a class 2b medical device approved by the Australian therapeutic Goods Administration (tGA). it is listed on the Australian prosthesis schedule which means the OMX tMJ prosthesis device is fully rebateable on the patient’s private health insurance. ACKNOWLEDGEMENTS: the author would like to thank Dr David Ackland and Professor Peter Vs lee from the Biomedical engineering Department at the university of Melbourne who were involved in the early development of the Melbourne tMJ prosthesis. the lInICal