Print Email Facebook Twitter Patient-specific Ti dental implants with antimicrobial properties Title Patient-specific Ti dental implants with antimicrobial properties Author van Megen, Xandra (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Zadpoor, A.A. (graduation committee) Apachitei, I. (mentor) Degree granting institution Delft University of Technology Programme Biomedical Engineering Date 2020-02-20 Abstract Dental implants are used to replace missing teeth. Although the success rate of dental implants is high, complications such as lack of osseointegration and peri-implantitis can occur. In this study a new type of dental implant is designed that mimics the root shape of the to be extracted tooth. These types of implants can be placed directly after extraction. To create these type of implants, CBCT scan, 3DXpert software, and SLM printing techniques are used. The aim of this current study is to investigate the application possibilities of antimicrobial surfaces created with the PEO process on these new types of dental implants and compare them with standard screw-type implants. Both implant types were analysed in terms of surface morphology, chemical composition, phase composition, Ag ion release profile and in vitro antimicrobial activity. All surfaces of the implants were successfully treated using the PEO process. The titanium oxide layer was formed homogeneously on all implants and resulted in a microporous surface layer. Using the zone of inhibition test, it was identified that all implants showed antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), however a larger growth inhibition zone was identified for porous patient-specific implants than screw-type implants. The ion release test indicated that a higher ion release was found on the porous patient-specific implants with a higher surface area than the screw-type dental implants, which is probably related to the surface area of the implants. This study indicates it is possible to create patient-specific dental implants that show antimicrobial properties against MRSA. Subject antimicrobial surfacesDental implants3D print To reference this document use: http://resolver.tudelft.nl/uuid:4d86d1df-7e75-4beb-8aec-8a0b0846b47d Embargo date 2022-02-22 Part of collection Student theses Document type master thesis Rights © 2020 Xandra van Megen Files PDF MSc_Thesis_Xandra_van_Meg ... sitory.pdf 27.07 MB Close viewer /islandora/object/uuid:4d86d1df-7e75-4beb-8aec-8a0b0846b47d/datastream/OBJ/view