| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Polyethylene terephthalate patch | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Plastic stent | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polyethylene terephthalate graft | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Tooth restoration - plastic | Is a | False | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Porous polyethylene orbital implant | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Non-constrained polyethylene acetabular liner | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Metal-on-polyethylene total hip prosthesis | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polyethylene elbow ulna prosthesis | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Uncoated unicondylar knee tibia prosthesis, polyethylene | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Uncoated knee tibia prosthesis, polyethylene | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Constrained polyethylene acetabular liner | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Ceramic-on-polyethylene total hip prosthesis | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polyethylene reverse shoulder prosthesis cup | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polytetrafluoroethylene ossicular piston | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polyethylene patella prosthesis | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  | 
| Polyethylene acetabulum prosthesis | Is a | True | Implant made of plastic material, device | Inferred relationship | Existential restriction modifier |  |