| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Generalized enamel hypoplasia of undetermined etiology | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Generalized enamel hypoplasia associated with systemic disease | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Generalized enamel hypoplasia associated with radiation therapy | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Generalized enamel hypoplasia associated with ingestion of drugs | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Localized enamel hypoplasia of undetermined etiology | Is a | False | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Localized enamel hypoplasia associated with localized trauma | Is a | False | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Localized enamel hypoplasia associated with local infection | Is a | False | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Amelogenesis imperfecta | Is a | False | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Antenatal enamel hypoplasia | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Neonatal enamel hypoplasia | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Dental caries associated with enamel hypoplasia | Associated with | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier | 2 | 
| Turner's tooth | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Hypoplasia of enamel due to congenital syphilis | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Localized enamel hypoplasia | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Deafness, enamel hypoplasia, nail defect syndrome | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Short stature, unique facies, enamel hypoplasia, progressive joint stiffness, high-pitched voice syndrome | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Alaninuria, microcephaly, dwarfism, enamel hypoplasia, diabetes mellitus syndrome | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Hypohidrosis, enamel hypoplasia, palmoplantar keratoderma, intellectual disability syndrome | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  | 
| Generalized enamel hypoplasia associated with fluorosis | Is a | True | Enamel hypoplasia | Inferred relationship | Existential restriction modifier |  |