| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Extraoral approach to local anesthetic infraorbital nerve block | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Extraoral approach to local anesthetic inferior alveolar nerve block | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Extraoral approach to local anesthetic mental nerve block | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of neurolytic substance to infraorbital nerve by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of neurolytic substance to mental nerve by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 3 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of submental space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of submandibular space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of supramylohyoid space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of sublingual space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Arthrodesis by anterior extraoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Procedure by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 4 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of retropharyngeal abscess by external approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier |  | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Arthrodesis by anterior extraoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Arthrodesis by anterior extraoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of retropharyngeal abscess by external approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of retropharyngeal abscess by external approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submaxillary abscess, extraoral | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of masticator space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submental space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submental space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submandibular space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submandibular space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of supramylohyoid space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of supramylohyoid space by extraoral approach | Approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submaxillary abscess, extraoral | Surgical approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submental space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submental space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of sublingual space by extraoral approach | Surgical approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of supramylohyoid space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of supramylohyoid space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of retropharyngeal abscess by external approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of retropharyngeal abscess by external approach | Surgical approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of masticator space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of masticator space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submandibular space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Surgical approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Arthrodesis by anterior extraoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Arthrodesis by anterior extraoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submandibular space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of sublingual space by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of submaxillary abscess, extraoral | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Incision and drainage of submaxillary abscess, extraoral | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of masseter muscle by extraoral approach | Surgical approach | False | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of masseter muscle by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of benign neoplasm of mandible with partial excision of mandible by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of cyst of mandible with partial excision of mandible by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of cyst of maxilla with partial excision of maxilla by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 1 | 
| Incision and drainage of retropharyngeal abscess by external approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 | 
| Sialendoscopically assisted removal of calculus from parotid duct by extraoral approach | Surgical approach | True | Extraoral approach | Inferred relationship | Existential restriction modifier | 2 |