Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

HLTDT508C Mapping and Delivery Guide
Construct removable acrylic partial dentures

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency HLTDT508C - Construct removable acrylic partial dentures
Description This unit of competency describes the skills and knowledge required to construct removable acrylic partial denturesAll 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
Employability Skills This unit contains Employability Skills
Learning Outcomes and Application This unit applies to work in dental technology
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Pre-requisite unitsThis unit must be assessed after successful achievement of pre-requisites:HLTDT301C Construct modelsHLTDT302C Construct custom impression traysHLTDT303C Construct registration rimsHLTDT304C Articulate models and transfer recordsHLTIN301C Comply with infection control policies and procedures
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Design acrylic removable partial denture
  • Confirm the survey of the model carried out by the operator
  • Confirm design and transfer to master model
  • Block-out undesirable undercuts
  • Scribe food lines
  • Duplicate master cast to create a working model
       
Element: Select and prepare materials
  • Select materials according to laboratory prescription
  • Establish shape and dimension of component parts from design
       
Element: Arrange artificial teeth
  • Select teeth and position in wax to establish aesthetics and function
  • Contour wax so that dentures are suitable for try-in
  • Decontaminate according to infection control guidelines and place in a suitable container for dispatch
       
Element: Construct retainer units
  • Construct components as required
  • Join components as required
  • Secure teeth and components in wax
  • Contour facial and lingual aspects
  • Secure appliance for processing
       
Element: Select and prepare materials and processing technique
  • Identify the appropriate polymer system for case
  • Identify the appropriate investment technique
  • Identify the appropriate processing cycle
  • Select polymeric material to construct the prosthesis
  • Prepare system components in accordance with manufacturer's instructions
  • Allow materials to reach application stage
       
Element: Process denture or appliance
  • Apply appropriate investment techniques
  • Apply material to mould
  • Process the polymeric material for the correct length of time at the correct temperature
  • Devest model and remove any processing irregularities and sharp edges before fitting onto master casts
  • Confirm accuracy of retainer units
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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:

The individual being assessed must provide evidence of specified essential knowledge as well as skills

Assessment should replicate workplace conditions as far as possible

Consistency of performance should be demonstrated over the required range of workplace situations

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

It is necessary to assess evidence of required knowledge. This may be provided by:

verbal questioning at the time of demonstration of required

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

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

Related units:

This unit may be assessed with other units which make up a job role

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

This describes the essential skills and knowledge and their level required for this unit.

Essential knowledge:

The candidate must be able to demonstrate essential knowledge required to effectively do the task outlined in elements and performance criteria of this unit, manage the task and manage contingencies in the context of the identified work role

This includes knowledge of:

Applied oral anatomy:

dentition - arrangement of the teeth, naming and coding of teeth

structures of the oral cavity - hard and soft palate, lateral and posterior borders of the oral cavity, tongue and floor of the mouth

teeth - form and function

Advantages and disadvantages of partial dentures

Fundamental knowledge of dental polymers including:

acrylic and modified acrylic prosthetic teeth

acrylic plastics as soft liners

acrylic plastics for denture bases including composition and properties

acrylic-metal combinations

acrylics for construction of custom trays

modified acrylic denture base plastics including manipulation and processing

the polymerisation process including cross-linked polymers, copolymers, modified polymers and vinyl plastics

Infection control guidelines for the decontamination of completed laboratory work

Principles of partial denture design

Surveying techniques

Stages in the design of partial dentures:

classifying, supporting and outlining the saddles

connecting the various components together

providing additional components where necessary to resist rotation

providing reciprocation and bracing

providing retention

reviewing the design for hygiene, support and retention

Essential skills:

It is critical that the candidate demonstrate the ability to

Consistently comply with current infection control guidelines, Australian Standards and legislative requirements as they relate to the dental technician's specific job role

Consistently comply with occupational health and safety policies and procedures as they relate to the dental technician's specific job role

Consistently produce acrylic partial dentures suitable for insertion in the mouth

Consistently comply with relevant legislative requirements

In addition, the candidate must be able to effectively do the task outlined in elements and performance criteria of this unit, manage the task and manage contingencies in the context of the identified work role

This includes the ability to:

Consistently follow infection control guidelines and safe work practices during the set-up and waxing of partial dentures

Consistently follow sequenced written instructions and manufacturer specifications for the preparation of materials

Consistently interpret and follow the laboratory prescription

Select procedures for partial denture construction

Use appropriate practices to ensure efficient use of power and other resources

Use literacy skills to read and follow directions, policies and procedures including:

laboratory policies and procedures

material safety data sheets

The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.

Component partsmay include:

Connectors

Direct retainers

Occlusal rests and similar components

Saddles

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Confirm the survey of the model carried out by the operator 
Confirm design and transfer to master model 
Block-out undesirable undercuts 
Scribe food lines 
Duplicate master cast to create a working model 
Select materials according to laboratory prescription 
Establish shape and dimension of component parts from design 
Select teeth and position in wax to establish aesthetics and function 
Contour wax so that dentures are suitable for try-in 
Decontaminate according to infection control guidelines and place in a suitable container for dispatch 
Construct components as required 
Join components as required 
Secure teeth and components in wax 
Contour facial and lingual aspects 
Secure appliance for processing 
Identify the appropriate polymer system for case 
Identify the appropriate investment technique 
Identify the appropriate processing cycle 
Select polymeric material to construct the prosthesis 
Prepare system components in accordance with manufacturer's instructions 
Allow materials to reach application stage 
Apply appropriate investment techniques 
Apply material to mould 
Process the polymeric material for the correct length of time at the correct temperature 
Devest model and remove any processing irregularities and sharp edges before fitting onto master casts 
Confirm accuracy of retainer units 

Forms

Assessment Cover Sheet

HLTDT508C - Construct removable acrylic partial dentures
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

HLTDT508C - Construct removable acrylic partial dentures

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: