| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire tongue | Is a | True | Tongue structure | Inferred relationship | Some |  | 
| Muscle of tongue | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Structure of lingual artery | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Half of tongue | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Tongue part | Is a | True | Tongue structure | Inferred relationship | Some |  | 
| Tongue surface region | Is a | True | Tongue structure | Inferred relationship | Some |  | 
| Structure of intrinsic lingual muscle | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Structure of aponeurosis of tongue | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Structure of dorsal lingual branch of lingual artery | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Structure of median furrow of tongue | Is a | True | Tongue structure | Inferred relationship | Some |  | 
| Structure of mucous membrane of tongue | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Structure of profunda artery of tongue | Is a | False | Tongue structure | Inferred relationship | Some |  | 
| Turner's tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Soft tissue X-ray tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Removal of lesion of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Cryotherapy to lesion of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Cauterization of lesion of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Biopsy of lesion of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Removal of foreign body from tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Commissurectomy of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Release of transfixion of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 2 | 
| Reconstruction of tongue with local flap | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Reconstruction of tongue with distant flap | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Reconstruction of tongue with microvascular transferred flap | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Excision of tissue of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Biopsy of tongue | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Supplemental tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Dentinogenesis imperfecta | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Odontogenesis imperfecta | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Midline deviation of dental arch | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Anterior imbrication of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Posterior imbrication of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Midline diastema of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Spacing of posterior teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Impacted permanent canine tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Impacted third molar tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Central cleft lip | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Benign tumour of fraenum linguae | Finding site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Tongue excision | Procedure site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Open wound of tongue (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some | 1 | 
| Posterior lingual occlusion of mandibular teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Gingival cyst of adult | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Congenital anomaly of oral mucosa | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Developmental anomaly of crown and root formation | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Moon's molar teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Exaggerated cusp of tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Exaggerated cingulum of tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Abnormal crown of tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| False anodontia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Anomalous number of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Congenital absence of one tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Anodontia of primary dentition | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Anodontia of permanent dentition | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Congenital hypodontia, multiple teeth, unrelated to systemic disease | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Congenital hypodontia, multiple teeth, related to systemic disease | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Familial hypodontia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Supernumerary deciduous tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Impacted mesiodens | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Fusion of crown of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Duplication of teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Enamel spur | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Paired teeth microdontia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Single tooth microdontia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Multirooted tooth with divergent roots | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Multirooted tooth with convergent roots | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Lateral accessory root canals | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Intrinsic enamel discoloration of erythroblastosis fetalis | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Amelogenesis imperfecta, hypomaturation hypoplasia type with taurodontism | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Amelogenesis imperfecta, hypoplastic type with microdontia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Enamel-renal syndrome | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Enamel hypomineralization (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Localized enamel hypomineralization of undetermined etiology | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Localized enamel hypomineralization associated with localized trauma | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Localized enamel hypomineralization associated with localized infection | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Generalized enamel hypomineralization | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Dentin dysplasia | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Dentin dysplasia, type I | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Dentin dysplasia, type II | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Crossbite | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Reverse posterior crossbite, single tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Reverse posterior crossbite, multiple teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Tooth in buccoversion | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Tooth in linguoversion (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Crowding of teeth due to supernumerary teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Abnormal root proximity between adjacent teeth (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Protrusion of tooth (finding) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Partially impacted tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Impacted tooth in soft tissue | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Partially impacted tooth in bone | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Completely impacted tooth in bone | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Complicated impacted tooth (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| gegeneraliseerde premature exfoliatie van gebitselementen door systeemziekte | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Precocious exfoliation due to ectopic eruption of proximate tooth (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Precocious exfoliation of teeth due to idiopathic root resorption (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Precocious exfoliation of teeth due to root resorption following trauma (disorder) | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Failure of exfoliation of primary teeth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Failure of exfoliation associated with lack of succedaneous tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Failure of exfoliation associated with ectopic eruption of succedaneous tooth | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Failure of tooth eruption associated with tooth impaction | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Hyperplastic tooth follicle | Finding site | False | Tongue structure | Inferred relationship | Some |  | 
| Cleft of primary palate | Finding site | False | Tongue structure | Inferred relationship | Some |  |