| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire root canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Mesial pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Structure of distal pulp canal of tooth (body structure) | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Palatal pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Buccal pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Mesiobuccal pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Mesiolingual pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Distobuccal pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Distolingual pulp canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Structure of pulp of auxiliary canal of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Structure of apex of radicular pulp of tooth | Is a | True | Structure of root canal of tooth | Inferred relationship | Some |  | 
| Lateral accessory root canals | Finding site | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Radiography of root canal | Procedure site | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Application of root canal medication | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Repair perforation of tooth root by internal recalcification | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Apexification/recalcification, interim visit | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Apexification/recalcification, final visit | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Apexification/recalcification, initial visit | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Therapeutic apical closure | Procedure site - Indirect (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Radiography of root canal | Procedure site - Direct (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Irrigation of root canal | Procedure site - Direct (attribute) | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Apexification/recalcification, interim visit | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Lateral accessory root canals | Finding site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Repair perforation of tooth root by internal recalcification | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Apexification/recalcification, final visit | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Irrigation of root canal | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Radiography of root canal | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Therapeutic apical closure | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Apexification/recalcification, initial visit | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Application of root canal medication | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Obliteration of root canal of tooth due to abnormal mineralization of tooth pulp (disorder) | Finding site | True | Structure of root canal of tooth | Inferred relationship | Some | 3 | 
| Application of root canal dressing | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Perforation of root canal space due to endodontic treatment | Finding site | False | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Root canal preparation | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Ream root canal | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| File root canal | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Revision of treatment of root canal of incisor tooth (procedure) | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Revision of root canal treatment of canine tooth | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Revision of root canal treatment of molar tooth | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Revision of root canal treatment of premolar tooth | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Revision of treatment of root canal of anterior tooth (procedure) | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Separated endodontic instrument in root canal of tooth | Finding site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Working length of root canal of tooth using endodontic apex locator | Direct site (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 3 | 
| Insertion of non-setting calcium hydroxide paste to root canal of tooth (procedure) | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Removal of fractured endodontic instrument from root canal of tooth | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Treatment of root canal of tooth (procedure) | Procedure site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Retrograde filling per root | Procedure site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Root canal obturation | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Excision and retrograde filling of root of tooth (procedure) | Procedure site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Root canal therapy, comprehensive | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Canal preparation and fitting of preformed dowel or post | Procedure site - Indirect (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Canal preparation and fitting of preformed dowel or post | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Root canal therapy, bicuspid, excluding final restoration | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Root canal therapy, molar, excluding final restoration | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 1 | 
| Root canal therapy, anterior, excluding final restoration | Procedure site - Direct (attribute) | True | Structure of root canal of tooth | Inferred relationship | Some | 2 | 
| Procedure on root canal of tooth | Procedure site | True | Structure of root canal of tooth | Inferred relationship | Some | 1 |