| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Biopsy of lesion of gingiva | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Gingivoplasty | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Debridement of periodontium | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Pericision of periodontal ligament | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Gingivectomy | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Modified Widman flap | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Replacement of periodontal flap (procedure) | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Grafting of periodontal bone defect (procedure) | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Mucogingival graft | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Periodontal regeneration procedure | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Distal wedge periodontal procedure | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Crown lengthening, hard and soft tissue | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Type III, moderate periodontitis, moderate to deep pocket therapy | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Dentoalveolar bone replacement graft, multiple sites, including flap entry and closure | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Gingival flap procedure, including root planing, per quadrant | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Dentoalveolar bone replacement graft, single site, including flap entry and closure | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Type I, gingivitis, shallow pocket therapy | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Type II, early periodontitis, moderate pocket therapy | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Dentoalveolar bone osseous surgery, including flap entry and closure, per quadrant | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Type IV, advanced periodontitis, deep pocket therapy | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Subgingival curettage | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Gingiva operations | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Periodontium curettage | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Tooth and periodontium operation | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Excision of lesion of dentoalveolar structure (procedure) | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Insertion of membrane into periodontal tissue | Is a | False | Periodontal operation | Inferred relationship | Some |  | 
| Repositioned periodontal flap | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Resection of alveolar process and palate, en bloc | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Pedicle soft dentoalveolar tissue graft procedure | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Repair of mandibular ridge | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Open reduction of alveolar ridge fracture | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Surgical arrest of post-extraction hemorrhage | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Osteotomy of alveolar segment of mandible | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Dental alveoplasty | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Osteotomy of alveolar segment of maxilla | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Alveolar bone graft | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Augmentation of alveolar ridge | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Alveolectomy, including sequestrectomy | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Guided periodontal tissue regeneration (procedure) | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Excision of osseous tuberosities of dentoalveolar structures | Is a | True | Periodontal operation | Inferred relationship | Some |  | 
| Excision of fibrous tuberosities of dentoalveolar structures (procedure) | Is a | True | Periodontal operation | Inferred relationship | Some |  |