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Evidence Guide: HLTDET015 - Construct complete removable acrylic dentures and appliances

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

HLTDET015 - Construct complete removable acrylic dentures and appliances

What evidence can you provide to prove your understanding of each of the following citeria?

Elements define the essential outcomes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Articulate by means of face-bow

  1. Receive face-bow with completed bite registration.
  2. Read and interpret work order
  3. Articulate on an industry specific articulator in accordance with clinician requirements
Receive face-bow with completed bite registration.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Read and interpret work order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Articulate on an industry specific articulator in accordance with clinician requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare case for setting of teeth

  1. Select artificial teeth in accordance with work order
  2. Modify bases and rims as required for positioning teeth
Select artificial teeth in accordance with work order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Modify bases and rims as required for positioning teeth

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Arrange artificial teeth

  1. Follow work order to position and attach the prescribed artificial teeth
  2. Shape and contour the supportive wax and contour to gingival outline
Follow work order to position and attach the prescribed artificial teeth

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Shape and contour the supportive wax and contour to gingival outline

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Wax up denture for try-in

  1. Contour facial and lingual aspects
  2. Locate and relieve muscle attachments
  3. Smooth and round peripheral extensions
  4. Confirm distal extensions
  5. Decontaminate the trial prosthesis according to infection control guidelines
  6. Dry the trial prosthesis and place in a sealed container for dispatch
Contour facial and lingual aspects

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Locate and relieve muscle attachments

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Smooth and round peripheral extensions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm distal extensions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Decontaminate the trial prosthesis according to infection control guidelines

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dry the trial prosthesis and place in a sealed container for dispatch

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check and modify the returned trial prosthesis

  1. Decontaminate the returned prosthesis and identify any modifications that are required
  2. Check the returned trial prosthesis for loosening or movement of teeth and make necessary adjustments
  3. Fit the returned trial prosthesis to the model if it needs to be modified, articulate and make necessary modifications
Decontaminate the returned prosthesis and identify any modifications that are required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check the returned trial prosthesis for loosening or movement of teeth and make necessary adjustments

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit the returned trial prosthesis to the model if it needs to be modified, articulate and make necessary modifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Wax case for finish consistent with work order

  1. Evaluate the work order, models and denture design and decide whether or not to use a duplicate model for processing the final prosthesis
  2. Apply wax as required by work order
  3. Contour facial and lingual aspects
Evaluate the work order, models and denture design and decide whether or not to use a duplicate model for processing the final prosthesis

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply wax as required by work order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Contour facial and lingual aspects

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select and prepare materials and processing technique

  1. Identify the appropriate polymer system for case
  2. Identify the appropriate investment technique
  3. Identify the appropriate processing cycle
  4. Select polymeric material to construct the prosthesis
  5. Prepare system components in accordance with manufacturers’ instructions
  6. Allow materials to reach application stage
Identify the appropriate polymer system for case

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the appropriate investment technique

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the appropriate processing cycle

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select polymeric material to construct the prosthesis

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare system components in accordance with manufacturers’ instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Allow materials to reach application stage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Process denture

  1. Apply appropriate investment techniques
  2. Apply material to mould
  3. Process the polymeric material for the correct length of time at the correct temperature
  4. Devest model and remove the processed prosthesis without causing damage to it
  5. Trim excess material and remount on articulator
Apply appropriate investment techniques

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply material to mould

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Process the polymeric material for the correct length of time at the correct temperature

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Devest model and remove the processed prosthesis without causing damage to it

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Trim excess material and remount on articulator

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Finish denture

  1. Select methods, materials and equipment for trimming, finishing and polishing the prosthesis appropriate to the appliance and the materials used in its construction
  2. Reposition models on the articulator where possible
  3. Assess the articulated prosthesis and confirm that articulation is appropriate to the work order
  4. Make any necessary adjustments to maintain original vertical dimension
  5. Remove any processing irregularities and sharp edges
  6. Polish the non-fitting surfaces of the prosthesis to create smooth, polished surfaces
  7. Evaluate the finished prosthesis
  8. Decontaminate the dentures according to infection control guidelines
  9. Place in a sealed container for dispatch
Select methods, materials and equipment for trimming, finishing and polishing the prosthesis appropriate to the appliance and the materials used in its construction

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Reposition models on the articulator where possible

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess the articulated prosthesis and confirm that articulation is appropriate to the work order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Make any necessary adjustments to maintain original vertical dimension

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove any processing irregularities and sharp edges

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Polish the non-fitting surfaces of the prosthesis to create smooth, polished surfaces

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate the finished prosthesis

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Decontaminate the dentures according to infection control guidelines

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Place in a sealed container for dispatch

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

ELEMENT

PERFORMANCE CRITERIA

Elements define the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Articulate by means of face-bow

1.1 Receive face-bow with completed bite registration.

1.2 Read and interpret work order

1.3 Articulate on an industry specific articulator in accordance with clinician requirements

2. Prepare case for setting of teeth

2.1 Select artificial teeth in accordance with work order

2.2 Modify bases and rims as required for positioning teeth

3. Arrange artificial teeth

3.1 Follow work order to position and attach the prescribed artificial teeth

3.2 Shape and contour the supportive wax and contour to gingival outline

4. Wax up denture for try-in

4.1 Contour facial and lingual aspects

4.2 Locate and relieve muscle attachments

4.3 Smooth and round peripheral extensions

4.4 Confirm distal extensions

4.5 Decontaminate the trial prosthesis according to infection control guidelines

4.6 Dry the trial prosthesis and place in a sealed container for dispatch

5. Check and modify the returned trial prosthesis

5.1 Decontaminate the returned prosthesis and identify any modifications that are required

5.2 Check the returned trial prosthesis for loosening or movement of teeth and make necessary adjustments

5.3 Fit the returned trial prosthesis to the model if it needs to be modified, articulate and make necessary modifications

6. Wax case for finish consistent with work order

6.1 Evaluate the work order, models and denture design and decide whether or not to use a duplicate model for processing the final prosthesis

6.2 Apply wax as required by work order

6.3 Contour facial and lingual aspects

7. Select and prepare materials and processing technique

7.1 Identify the appropriate polymer system for case

7.2 Identify the appropriate investment technique

7.3 Identify the appropriate processing cycle

7.4 Select polymeric material to construct the prosthesis

7.5 Prepare system components in accordance with manufacturers’ instructions

7.6 Allow materials to reach application stage

8. Process denture

8.1 Apply appropriate investment techniques

8.2 Apply material to mould

8.3 Process the polymeric material for the correct length of time at the correct temperature

8.4 Devest model and remove the processed prosthesis without causing damage to it

8.5 Trim excess material and remount on articulator

9. Finish denture

9.1 Select methods, materials and equipment for trimming, finishing and polishing the prosthesis appropriate to the appliance and the materials used in its construction

9.2 Reposition models on the articulator where possible

9.3 Assess the articulated prosthesis and confirm that articulation is appropriate to the work order

9.4 Make any necessary adjustments to maintain original vertical dimension

9.5 Remove any processing irregularities and sharp edges

9.6 Polish the non-fitting surfaces of the prosthesis to create smooth, polished surfaces

9.7 Evaluate the finished prosthesis

9.8 Decontaminate the dentures according to infection control guidelines

9.9 Place in a sealed container for dispatch

Required Skills and Knowledge

ELEMENT

PERFORMANCE CRITERIA

Elements define the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Articulate by means of face-bow

1.1 Receive face-bow with completed bite registration.

1.2 Read and interpret work order

1.3 Articulate on an industry specific articulator in accordance with clinician requirements

2. Prepare case for setting of teeth

2.1 Select artificial teeth in accordance with work order

2.2 Modify bases and rims as required for positioning teeth

3. Arrange artificial teeth

3.1 Follow work order to position and attach the prescribed artificial teeth

3.2 Shape and contour the supportive wax and contour to gingival outline

4. Wax up denture for try-in

4.1 Contour facial and lingual aspects

4.2 Locate and relieve muscle attachments

4.3 Smooth and round peripheral extensions

4.4 Confirm distal extensions

4.5 Decontaminate the trial prosthesis according to infection control guidelines

4.6 Dry the trial prosthesis and place in a sealed container for dispatch

5. Check and modify the returned trial prosthesis

5.1 Decontaminate the returned prosthesis and identify any modifications that are required

5.2 Check the returned trial prosthesis for loosening or movement of teeth and make necessary adjustments

5.3 Fit the returned trial prosthesis to the model if it needs to be modified, articulate and make necessary modifications

6. Wax case for finish consistent with work order

6.1 Evaluate the work order, models and denture design and decide whether or not to use a duplicate model for processing the final prosthesis

6.2 Apply wax as required by work order

6.3 Contour facial and lingual aspects

7. Select and prepare materials and processing technique

7.1 Identify the appropriate polymer system for case

7.2 Identify the appropriate investment technique

7.3 Identify the appropriate processing cycle

7.4 Select polymeric material to construct the prosthesis

7.5 Prepare system components in accordance with manufacturers’ instructions

7.6 Allow materials to reach application stage

8. Process denture

8.1 Apply appropriate investment techniques

8.2 Apply material to mould

8.3 Process the polymeric material for the correct length of time at the correct temperature

8.4 Devest model and remove the processed prosthesis without causing damage to it

8.5 Trim excess material and remount on articulator

9. Finish denture

9.1 Select methods, materials and equipment for trimming, finishing and polishing the prosthesis appropriate to the appliance and the materials used in its construction

9.2 Reposition models on the articulator where possible

9.3 Assess the articulated prosthesis and confirm that articulation is appropriate to the work order

9.4 Make any necessary adjustments to maintain original vertical dimension

9.5 Remove any processing irregularities and sharp edges

9.6 Polish the non-fitting surfaces of the prosthesis to create smooth, polished surfaces

9.7 Evaluate the finished prosthesis

9.8 Decontaminate the dentures according to infection control guidelines

9.9 Place in a sealed container for dispatch

The candidate must show evidence of the ability to complete tasks outlined in elements and performance criteria of this unit, manage tasks and manage contingencies in the context of the job role. There must be evidence that the candidate has:

• read and correctly interpreted 2 work orders, arranged artificial teeth, and used standard precautions and safe work practices to wax, process and finish 1 maxillary and 1 mandibular complete acrylic prosthesis to a standard suitable for insertion in the mouth

• critically evaluated the 2 complete acrylic prostheses produced to meet technical laboratory and patient requirements, including confirming that each acrylic prosthesis:

- is compliant with the work order

- is free from defects

- is functionally effective in line with the design and occlusion and is suitable for insertion in the mouth.

The candidate must demonstrate essential knowledge required to effectively complete tasks outlined in elements and performance criteria of this unit, manage tasks and manage contingencies in the context of the work role. This includes knowledge of:

• Australian/New Zealand Standards, workplace health and safety (WHS) policies, Dental Board of Australia guidelines on infection control, Commonwealth and State/Territory legislation and organisation policies relating to dental laboratory work

• fundamental oral anatomy including:

- 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

• articulation procedures

• properties of a range of dental materials used in the construction of removable acrylic prostheses including:

- atomic structure

- chemical bonding and reactions

- classification of materials

- classification of matter

- properties of materials

• 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

• mechanical devices:

- articulators

- face-bows

• recording techniques and devices

• relevant material science for carrying out procedures.