Extension: Tooth Surface (Experimental)
| Official URL: https://fhir.cognovis.de/dental-core/StructureDefinition/tooth-surface | Version: 0.3.0 | |||
| Draft as of 2026-08-14 | Computable Name: ToothSurfaceExt | |||
| Other Identifiers: OID:2.16.840.1.113883.3.7985.2.42.34 | ||||
Copyright/Legal: Copyright 2026+ cognovis GmbH. Cognovis-authored Dental Core material is licensed under Apache-2.0; third-party material retains its own terms as documented in the Third-Party Notices. |
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Identifies one tooth surface with the issuer-owned HL7 Terminology FDI-surface CodeSystem. Repeat the extension for multiple surfaces.
Context of Use
This extension may be used on the following element(s):
- Element ID Observation.bodySite
- Element ID Observation.component
- Element ID Condition.bodySite
- Element ID ServiceRequest.bodySite
Usage info
Usages:
- Use this Extension: Dental Finding, Dental Peri-Implant Finding, Dental Periodontal Finding and Dental Tooth State
- Examples for this Extension: Observation/dental-core-example-caries-finding, Observation/dental-core-example-direct-gingival-thickness, Observation/dental-core-example-gingival-assessment, Observation/dental-core-example-gingival-recession-assessment and Observation/dental-core-example-probe-transparency
You can also check for usages in the FHIR IG Statistics
Formal Views of Extension Content
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Tooth Surface | |
  extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/tooth-surface" | |
  value[x] |
0..1 | Coding | Value of extension Binding: FDI Tooth Surfaces (required) | |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Tooth Surface | |
 id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/tooth-surface" | |
| value[x] |
0..1 | Coding | Value of extension Binding: FDI Tooth Surfaces (required) | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Tooth Surface | |
| extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/tooth-surface" | |
| value[x] |
0..1 | Coding | Value of extension Binding: FDI Tooth Surfaces (required) | |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Tooth Surface | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/tooth-surface" | |
| value[x] |
0..1 | Coding | Value of extension Binding: FDI Tooth Surfaces (required) | |
| Documentation for this format | ||||
Other representations of profile: CSV, Excel, Schematron
Terminology Bindings
| Path | Status | Usage | ValueSet | Version | Source |
| Extension.value[x] | Base | required | FDI Tooth Surfaces | 📦0.3.0 | This IG |
Constraints
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|