| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Transoral fusion of atlantoaxial joint | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Transoral excision of odontoid peg | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Intubation of gastrointestinal tract via mouth | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Insertion of orogastric tube | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Removal of orogastric tube | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Peroral choledochoscopy | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of supramylohyoid space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of submental space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of retropharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of parapharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of sublingual space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of submandibular space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Peroral cholangiography | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Oral diagnostic laryngoscopy | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Oral laryngoscopy | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Procedure by transoral approach | Approach | False | Transoral approach | Inferred relationship | Some |  | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 3 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submental space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submental space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of retropharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of retropharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of parapharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of parapharyngeal abscess by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of supramylohyoid space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of supramylohyoid space by intraoral approach | Approach | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of supramylohyoid space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of supramylohyoid space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of masticator space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of masticator space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submandibular space by intraoral approach | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of parapharyngeal abscess by intraoral approach | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of submaxillary abscess, intraoral | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 1 | 
| Transoral fusion of atlantoaxial joint | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 1 | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 2 | 
| Transoral excision of odontoid peg | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of parapharyngeal abscess by intraoral approach | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of retropharyngeal abscess by intraoral approach | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of retropharyngeal abscess by intraoral approach | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submental space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of submental space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submaxillary abscess, intraoral | Surgical approach (attribute) | False | Transoral approach | Inferred relationship | Some | 2 | 
| Incision and drainage of submandibular space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 2 | 
| Transoral fusion of atlantoaxial joint | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Peroral endoscopic myotomy of esophagus (procedure) | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Transoral partial excision of tongue using robotic assistance (procedure) | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 | 
| Incision and drainage of submandibular space by intraoral approach | Surgical approach (attribute) | True | Transoral approach | Inferred relationship | Some | 1 |