| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Turner's tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Supplemental tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Dentinogenesis imperfecta | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Odontogenesis imperfecta | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Midline deviation of dental arch | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Anterior imbrication of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Posterior imbrication of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Midline diastema of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Spacing of posterior teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Impacted permanent canine tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Impacted third molar tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Choanal atresia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Atresia of the anterior nares | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Atresia of the posterior nares | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Central cleft lip | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital absence of pituitary gland | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Accessory pituitary gland | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Posterior lingual occlusion of mandibular teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 4 | 
| Gingival cyst of adult | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital anomaly of oral mucosa | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Developmental anomaly of crown and root formation | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier |  | 
| Moon molar teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Exaggerated cusp of tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Exaggerated cingulum of tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Abnormal crown of tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| False anodontia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Anomalous number of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Congenital absence of one tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Anodontia of primary dentition | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Anodontia of permanent dentition | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital hypodontia, multiple teeth, unrelated to systemic disease | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital hypodontia, multiple teeth, related to systemic disease | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Familial hypodontia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Supernumerary deciduous tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Impacted mesiodens | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Fusion of crown of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Duplication of teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Enamel spur | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 4 | 
| Paired teeth microdontia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Single tooth microdontia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Multirooted tooth with divergent roots | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Multirooted tooth with convergent roots | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Lateral accessory root canals | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Intrinsic enamel discoloration of erythroblastosis fetalis | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Amelogenesis imperfecta, hypomaturation hypoplasia type with taurodontism | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Amelogenesis imperfecta, hypoplastic type with microdontia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Enamel-renal syndrome | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Enamel hypomineralization | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Localized enamel hypomineralization of undetermined etiology | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Localized enamel hypomineralization associated with localized trauma | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Localized enamel hypomineralization associated with localized infection | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Generalized enamel hypomineralization | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Dentin dysplasia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Dentin dysplasia, type I | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Dentin dysplasia, type II | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 4 | 
| Crossbite | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Reverse posterior crossbite, single tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Reverse posterior crossbite, multiple teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Tooth in buccoversion | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Tooth in linguoversion | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Crowding of teeth due to supernumerary teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Abnormal root proximity between adjacent teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Protrusion of tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Partially impacted tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Impacted tooth in soft tissue | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Partially impacted tooth in bone | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Completely impacted tooth in bone | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Complicated impacted tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Generalized precocious exfoliation of teeth related to systemic disease | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Precocious exfoliation due to ectopic eruption of proximate tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 5 | 
| Precocious exfoliation of teeth due to idiopathic root resorption | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Precocious exfoliation of teeth due to root resorption following trauma | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Failure of exfoliation of primary teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Failure of exfoliation associated with lack of succedaneous tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Failure of exfoliation associated with ectopic eruption of succedaneous tooth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Failure of tooth eruption associated with tooth impaction | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Hyperplastic tooth follicle | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Cleft of primary palate | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 7 | 
| Unilateral cleft of primary palate | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Bilateral cleft of primary palate | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Aberrant insertion of labial frenulum | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Palatal cyst of newborn | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Ectopic oral gastrointestinal cyst | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Aberrant insertion of frenum of tongue | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital anomaly of uvula | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 5 | 
| Secondary dental arch length loss | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Dental arch length loss secondary to congenitally missing teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Dental arch length loss secondary to loss of primary precursors | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Dental arch length loss secondary to loss of permanent teeth | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Dental arch length loss secondary to dental caries | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Excessive dental arch length | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Choanal atresia with radial ray hypoplasia | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Choanal atresia with coloboma, heart malformation, choanal atresia, retardation of growth and development, genital abnormalities, and ear malformations association | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Agenesis of nasal cartilages | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Nasal dermoid | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Median nasal dermoid fistula | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 2 | 
| Bifid epiglottis | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Supernumerary cusp | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 3 | 
| Talon cusp | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Dentinogenesis imperfecta - Shield's type I | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 | 
| Dentinogenesis imperfecta - Shield's type II | Associated morphology | False | Congenital malformation | Inferred relationship | Existential restriction modifier | 1 |