Unit of competency Outline

Date retreived
22/07/2026 11:01 PM AWST

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Construct custom impression trays

Construct custom impression trays

Unit of competency
National Code
HLTDT302D
State Code
WD123
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
07/05/2012
View on TGA
State Implementation and Classification
Approved Date
27/07/2012
Field of Education
060705 - Dental Technology
Original Release Date
27/07/2012
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 work health and safety (WHS) 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
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
Replaces
State Code National Code Title Type
D8181 HLTDT302C Construct custom impression trays Unit of competency
Replaced By
State Code National Code Title Type
AWA30 HLTDET002 Construct custom impression trays Unit of competency