Abstract
In the last years, several materials and design have been assessed in an attempt to improve the mechanical performance of temporomandibular joint total joint replacement (TMJ TJR) prostheses. However, the wear of the TMJ TJR condyle to the polymer-based fossa component during loading and sliding movements. That promotes the release of debris and risks of toxicity to the surrounding tissues. The purpose of this study was to perform a narrative literature review on the wear of TMJ TJR sliding contacts and potential toxicity of metallic debris to the patients. Previous studies reported a significant deterioration of the sliding contact surfaces of TMJ TJR prostheses. Material loss as a result of wear can cause a TMJ TJR condyle/fossa mismatch and the modification of the contact pressure and chewing loading. As a further consequence of wear, metal particles are released to the surrounding tissues with a high risk of local tissue and systemic toxicity through the bloodstream. The presence of particles induces the stimulation of inflammatory reactions depending on the concentration and size of debris. Thus, CoCr-based condyle release metallic ions and sub-micron particles that can be engulfed by macrophages or internalized by other tissue cells. The wear and material loss of TMJ TJR could be decreased by design optimization and novel materials with low friction and contact pressure. That consequently decrease the amount of metallic ions and particles to the surrounding tissues, preventing peri-prosthetic inflammatory reactions.
Highlights
Among the currently available biomedical materials, the long-term success rates of titanium-based dental implants have supported the use of titanium and its alloys to manufacture implants and prosthetic devices [1,2]
Regardless of the material, the loading is located at a small contact area that results in higher stresses and wear rate of materials leading to the release of debris to the surrounding tissues [7,9,30,31]
Taking into account the degradation of temporomandibular joint total joint replacement (TMJ total joint replacement (TJR)) prostheses, the present work aims to carry out a narrative review on the wear of temporomandibular joint (TMJ) TJR sliding contacts and toxic consequences related to the release of metallic debris from wear and corrosion processes
Summary
Among the currently available biomedical materials, the long-term success rates of titanium-based dental implants have supported the use of titanium and its alloys to manufacture implants and prosthetic devices [1,2]. The human synovial temporomandibular joint (TMJ) is formed by the mandible condyle, fibrous articular disc, and temporal bone fossa. Around 25% world population is affected by some type of temporomandibular joint disorder (TMD) such as muscular pain, opening mouth limitations, migraines, and bruxism, . Around 25% world population is affected by some type of temporomandibular joint disorder (TMD) such as muscular pain, opening mouth limitations, migraines, and bruxism, sdoaadyaullelltedirttrhsahhg.soorooirisIucsuudnaogggpellhtrdhhrhpse.oersovIionusnnaUclrllpytegeyShrdniAaeecautrva,rUorilaonaeuSpluspenAfrnnepado,dmtrrcaoe3iepa3nxkdrlkpieeufmprsecproamoaewaxtmstitiaeeiimatellmnheyrnatseietsnt1snewrneladmnyiectee1eohi1ed:ldm3ildmniiosrmnisuaanlutleroii1rgpnoon:gi3denlcwioyecarppadial2etltlpho–ieipnor5pmopr%lowoceeancerilpoeltdeyhyedfsure,u2Tmrayr–reMaree5asnas%laD[egr7r[sie7a–o,cn–r1fardge10asTi0d]enfaM.r]sigg.oaCinD[mCgn3oonog,mcs52omae,f0s6msrdmee]ou.dosmwponTw[ni3tt2Mcoi,hc05taha4D,ua6uu0as]psT.edyTesTMietsMsoMafooDfrD4orsDr-,0r, ssuurrggiiccaallpprroocceedduurreess wwiitthh TTMMJJ ttoottaall jjooiinnttrreeppllaacceemmeenntt(T(TJRJR))aarerererlealtaetdedtotosesveevreeretratruamuma oar oernedn-sdt-asgtaegjoeijnotindtisdeiasseeassesus cshucahs aanskaynlkoysilso,sdise,gdeengeernateirvaetidviesedaisseesas(ie.se.(,io.es.t,eoosatretoharrittihsr),itaisn)d, atnudmtourms [o3r,s5,[63,1,51,]6.,1E1n]d. Regardless of the material, the loading is located at a small contact area that results in higher stresses and wear rate of materials leading to the release of debris to the surrounding tissues [7,9,30,31]. Taking into account the degradation of TMJ TJR prostheses, the present work aims to carry out a narrative review on the wear of TMJ TJR sliding contacts and toxic consequences related to the release of metallic debris from wear and corrosion processes
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
