Unit of competency Outline
Date retreived
22/07/2026 8:24 AM AWST
22/07/2026 8:24 AM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Construct custom impression trays
Construct custom impression trays
Unit of competency
National Code
HLTDT302C
HLTDT302C
State Code
D8181
D8181
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
02/08/2011
Field of Education
060705 - Dental Technology
Original Release Date
02/08/2011
Nominal Hours
28
Description
DescriptorThis unit of competency describes the skills and knowledge required to construct special trays to accurately record oral tissuesAll procedures are carried out in accordance with occupational health and safety policies and procedures, current infection control guidelines, Australian and New Zealand Standards, State/Territory legislative requirements and organisation policy
Notes
Elements and Performance Criteria
1. Prepare model
- 1.1 Read and interpret the prescription
- 1.2 Block out undesirable undercuts
- 1.3 Design the custom tray for the client's dentition and the intended impression material and technique
- 1.4 Apply spacer material as required
2. Select and prepare materials
- 2.1 Select custom tray materials in accordance with the prescription
- 2.2 Prepare equipment for processing
- 2.3 Provide appropriate mixing vessels and templates if required
3. Construct custom impression tray
- 3.1 Apply appropriate separating medium in accordance with manufacturer's instructions
- 3.2 Mix or manipulate materials in accordance with the manufacturer's instructions
- 3.3 Adapt tray material to the model to the pre-determined peripheral outline
- 3.4 Construct handle and finger rests and attach according to operator requirements
- 3.5 Process custom tray using the correct method for the correct material
- 3.6 Separate the tray from the cast in a manner that prevents damage and remove spacer material
- 3.7 Trim the outline of the tray to shape
4. Finish custom impression tray
- 4.1 Smooth and refine the peripheries, handle and other surfaces of the tray
- 4.2 Decontaminate the custom impression tray according to infection control guidelines
- 4.3 Dry the custom tray and place in a sealed container for dispatch
RANGE STATEMENT
The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.
Removable prostheses may include but are not limited to:
Complete dentures
Partial dentures
Custom tray materialsmay include:
Shellac
Acrylic resins
Thermoplastic
Light-cured composite
The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.
Removable prostheses may include but are not limited to:
Complete dentures
Partial dentures
Custom tray materialsmay include:
Shellac
Acrylic resins
Thermoplastic
Light-cured composite
EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.
Critical aspects for assessment and evidence required to demonstrate this competency unit:
Consistency of performance should be demonstrated over the required range of workplace situations
The individual being assessed must provide evidence of specified essential knowledge as well as skills
Context of and specific resources for assessment:
Assessment should replicate workplace conditions as far as possible
Where, for reasons of safety, access to equipment and resources and space, assessment takes place away from the workplace, simulations should be used to represent workplace conditions as closely as possible
Method of assessment
Evidence of essential knowledge and understanding may be provided by:
traditional or online (computer-based) assessment
written assignments/projects
Case study and scenario as a basis for discussion of issues and strategies to contribute to best practice
Questioning
Staff and/or client feedback
Supporting statement of supervisor
Authenticated evidence of relevant work experience and/or formal/informal learning
Role play/simulation
Access and equity considerations:
All workers in the health industry should be aware of access and equity issues in relation to their own area of work
All workers should develop their ability to work in a culturally diverse environment
In recognition of particular health issues facing Aboriginal and Torres Strait Islander communities, workers should be aware of cultural, historical and current issues impacting on health of Aboriginal and Torres Strait Islander people
Assessors and trainers must take into account relevant access and equity issues, in particular relating to factors impacting on health of Aboriginal and/or Torres Strait Islander clients and communities
The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.
Critical aspects for assessment and evidence required to demonstrate this competency unit:
Consistency of performance should be demonstrated over the required range of workplace situations
The individual being assessed must provide evidence of specified essential knowledge as well as skills
Context of and specific resources for assessment:
Assessment should replicate workplace conditions as far as possible
Where, for reasons of safety, access to equipment and resources and space, assessment takes place away from the workplace, simulations should be used to represent workplace conditions as closely as possible
Method of assessment
Evidence of essential knowledge and understanding may be provided by:
traditional or online (computer-based) assessment
written assignments/projects
Case study and scenario as a basis for discussion of issues and strategies to contribute to best practice
Questioning
Staff and/or client feedback
Supporting statement of supervisor
Authenticated evidence of relevant work experience and/or formal/informal learning
Role play/simulation
Access and equity considerations:
All workers in the health industry should be aware of access and equity issues in relation to their own area of work
All workers should develop their ability to work in a culturally diverse environment
In recognition of particular health issues facing Aboriginal and Torres Strait Islander communities, workers should be aware of cultural, historical and current issues impacting on health of Aboriginal and Torres Strait Islander people
Assessors and trainers must take into account relevant access and equity issues, in particular relating to factors impacting on health of Aboriginal and/or Torres Strait Islander clients and communities
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| C9187 | HLTDT302B | Construct custom impression trays | Unit of competency |
| C4998 | HLTDT2A | Construct custom impression trays | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| WD123 | HLTDT302D | Construct custom impression trays | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| D050 | HLT32707 | Certificate III in Dental Laboratory Assisting | Qualification |
| D089 | HLT50507 | Diploma of Dental Technology | Qualification |