| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Mucogingival graft | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontal regeneration procedure | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Periodontal regeneration using growth factor | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Provisional splinting, intracoronal | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 3 | 
| Provisional splinting, extracoronal | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 3 | 
| Periodontium curettage | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Type I, gingivitis, shallow pocket therapy | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periapical surgery of tooth | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Apicoectomy/periradicular surgery, anterior | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Grafting of periodontal bone defect | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of hematoma of dentoalveolar structures | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Guided dentoalveolar tissue regeneration, including surgery and re-entry | Procedure site - Direct | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acute pericoronitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Juvenile periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Rapidly progressive periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extrusive luxation of tooth | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Marginal periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of periodontal pack | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Replanted avulsed tooth | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic periodontitis NOS | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Root amputation, per root | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Complete avulsion of tooth | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acute necrotizing ulcerative periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Early onset periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Penetrating injury of gingivae | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Alveolar pyorrhea | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acute suppurative alveolar periostitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Human immunodeficiency virus-associated periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Adult periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Prepubertal periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Free soft dentoalveolar tissue graft procedure, including donor site | Procedure site - Direct | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of membrane from periodontal tissue | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of membrane from periodontal tissue | Procedure site - Direct | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 3 | 
| Refractory periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic periodontitis complex | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Tooth root resection | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acute pericementitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Localized adult periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic periodontitis simplex | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lateral luxation of tooth | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Early onset generalized periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Application to periodontal pocket | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Application to periodontal pocket - device | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic periodontitis with drifting of teeth | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cherubism with gingival fibromatosis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Gingivectomy NEC | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injury of periodontal tissue | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Concussion of periodontal ligament | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of membrane into periodontal tissue | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of membrane into periodontal tissue | Procedure site - Direct | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Early onset localized periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Surgical repair of perforation of tooth root | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Localized prepubertal periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Periapical curettage of tooth root | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontal operation | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Dislocation of tooth | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Periodontal lesion due to traumatic occlusion | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Apicoectomy/periradicular surgery, anterior | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Generalized adult periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Necrotizing ulcerative gingivoperiodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Apicoectomy/periradicular surgery, bicuspid | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of cyst of dentoalveolar structures | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Apicoectomy/periradicular surgery, molar | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontium curettage | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Application to periodontal pocket - syringe | Procedure site - Indirect | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Prepubertal generalized periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cyst of periodontal tissue | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hyperplastic tooth follicle | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Gingivoplasty | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 3 | 
| Gingivectomy | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Acute periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intrabony periodontal defect | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acute periodontitis NOS | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of lesion of dentoalveolar structure | Procedure site - Direct | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Dental restoration failure of periodontal anatomical integrity | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of membrane into periodontal tissue | Procedure site - Indirect | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of lesion of dentoalveolar structure | Procedure site - Direct | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Debridement of periodontium | Procedure site - Direct | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Debridement of periodontium | Procedure site - Direct | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of root of single-rooted tooth | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Excision of root of single-rooted tooth | Procedure site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Aggressive periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis as manifestation of systemic disease | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Periodontitis associated with chronic familial neutropenia | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis associated with cyclical neutropenia | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Necrotizing ulcerative periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Necrotizing ulcerative periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 3 | 
| Necrotizing periodontal disease | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 1 | 
| Localized chronic periodontitis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Generalized chronic periodontitis | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with Down syndrome | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 4 | 
| Periodontitis due to Papillon-Lefèvre syndrome | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with infantile genetic agranulocytosis | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 4 | 
| Periodontitis co-occurrent with Cohen syndrome | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with leukemia | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with Chédiak-Higashi syndrome | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 5 | 
| Periodontitis co-occurrent with hypophosphatasia | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with hematologic disorder | Finding site | True | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 | 
| Periodontitis co-occurrent with glycogen storage disease | Finding site | False | Periodontal tissues structure | Inferred relationship | Existential restriction modifier | 2 |