| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Secondary non-active dental caries extending into enamel | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acquired discoloration of enamel | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Acquired discoloration of enamel associated with aging | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extensive stage caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Initial stage active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Initial stage active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Initial stage non-active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Moderate stage caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Moderate stage non-active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extensive stage non-active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Moderate stage active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extensive stage active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Initial stage non-active caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Initial stage caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Initial stage caries of crown of tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Alaninuria, microcephaly, dwarfism, enamel hypoplasia, diabetes mellitus syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Short stature, unique facies, enamel hypoplasia, progressive joint stiffness, high-pitched voice syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Deafness, enamel hypoplasia, nail defect syndrome | Finding site | False | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hypohidrosis, enamel hypoplasia, palmoplantar keratoderma, intellectual disability syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Late-onset localized junctional epidermolysis bullosa, intellectual disability syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Abrasion of tooth extending into pulp | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Friction injury of tooth extending into dentine | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Friction injury of tooth extending into pulp | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 3 | 
| Abrasion of tooth extending into dentine | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Amelogenesis imperfecta and gingival hyperplasia syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Trichodysplasia with amelogenesis imperfecta syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 2 | 
| Autosomal recessive brachyolmia and amelogenesis imperfecta syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 4 | 
| Amelogenesis imperfecta co-occurrent with cone rod dystrophy | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Enamel-renal syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 3 | 
| Enamel and dentine fracture | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Erythrokeratodermia cardiomyopathy syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 3 | 
| Deafness, enamel hypoplasia, nail defect syndrome | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 6 | 
| Hypomineralization of enamel of deciduous second molar tooth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hypomineralization of enamel of teeth | Finding site | True | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Enamel dental caries unspecified | Finding site | False | Enamel structure | Inferred relationship | Existential restriction modifier | 1 | 
| Mottled tooth NOS | Finding site | False | Enamel structure | Inferred relationship | Existential restriction modifier |  |