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ARCI Develops Bi-Layered Single-Piece Dental Implant
Researchers at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) develop a bi-layered single-piece dental implant. The implant integrates Ti6Al4V titanium alloy and yttria-stabilized zirconia (YSZ) and uses Spark Plasma Sintering (SPS) for single-step densification.
ARCI Bi-Layered Single-Piece Dental Implant:
| Dimension | Key Details |
|---|---|
| Developing organisation | The dental implant is developed by researchers at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI). |
| Implant design | The implant comprises a bi-layered, single-piece structure. |
| Material integration | The implant integrates Ti6Al4V titanium alloy and yttria-stabilized zirconia (YSZ) within a single structure. |
| Stated outcomes | The implant provides for reduced need for surgical interventions, improved implant stability, and enhanced biocompatibility. |
| Manufacturing technology | Spark Plasma Sintering (SPS) using a tapered graphite die facilitates single-step densification of Ti6Al4V and YSZ composites. |
| Manufacturing output | The process achieves a density of 99.5%, resulting in strong, defect-free, reproducible, and scalable materials. |
| Interface observation | A stable ceramic–metal interface is observed, characterised by absence of cracks, pores, or delamination, minimal diffusion, and a fine-grained transition zone. |
| Mechanical properties | The implant exhibits a density of 99.5%, hardness of 1350 HV, compressive strength of approximately 1550 MPa, and flexural strength of approximately 310 MPa. |
| Comparison claim | The mechanical properties are equal to or exceed those of commercial implants. |
| Biocompatibility tests | The MTT assay demonstrates greater than 90% metabolic activity, and the hemolysis test shows negligible red blood cell damage. |
| Biological safety inference | Greater than 90% metabolic activity indicates non-cytotoxicity, and negligible red blood cell damage confirms biological safety. |
| Conventional implant components | A conventional dental implant comprises three components: fixture (embedded in jawbone), abutment (connects fixture and crown), and crown (replaces visible tooth). |
| Conventional implant challenge | Micromovement may occur at the abutment to fixture interface, and such micromovement can disrupt osseointegration, potentially resulting in implant loosening. |
| Conventional implant procedures | Placement of conventional implants typically requires 2 to 3 separate surgical procedures, leading to increased discomfort, higher costs, and greater clinical complexity. |
| Healthcare impact | The implant reduces surgical complexity and enhances the stability of dental implants. |
| Technology significance | The development demonstrates capability to develop indigenous biomaterials and apply powder metallurgy techniques. |
| Industrial relevance | The implant is reproducible and scalable, enabling domestic production of high-performance dental implants. |
| Atmanirbhar Bharat linkage | The development supports indigenous biomedical devices and promotes affordable dental healthcare. |