| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Restoration, crown, full cast, noble metal | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, full cast, predominantly base metal | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, resin with high noble metal | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, resin with noble metal | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, porcelain/ceramic substrate | Is a | False | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, resin with predominantly base metal | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, porcelain fused to predominantly base metal | Is a | False | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, porcelain fused to noble metal | Is a | False | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, 3/4 cast, metallic | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  | 
| Restoration, crown, resin, laboratory | Is a | True | Final cementation of crown to tooth - laboratory constructed | Inferred relationship | Existential restriction modifier |  |