Part B: Course Detail

Teaching Period: Term2 2019

Course Code: DENT5868C

Course Title: Construct cast alloy removable partial denture framework

School: 174T School of VE Engineering, Health & Science

Campus: City Campus

Program: C5387 - Diploma of Dental Technology

Course Contact: Rachael Starr

Course Contact Phone: +61 3 9341 1420

Course Contact Email: rachael.starr@rmit.edu.au


Name and Contact Details of All Other Relevant Staff

Nominal Hours: 80

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

None

Course Description

This unit of competency describes the skills and knowledge required to construct burnout patterns for cast metal framework and to devest, trim, treat, finish and evaluate alloy structures.

This unit applies to work in dental technology.


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

HLTDET008 Construct cast alloy removable partial denture framework

Element:

1. Prepare master model

Performance Criteria:

1.1 Read and interpret the work order

1.2 Confirm the survey of model that has been carried out by the operator

1.3 Transfer design to master model

1.4 Block out undesirable undercuts

1.5 Create clasp ledges

1.6 Scribe food lines

1.7 Apply tissue relief

1.8 Apply saddle relief

Element:

2. Construct refractory model

Performance Criteria:

2.1 Duplicate master model in refractory material to produce an accurate copy of the model

2.2 Construct sprue former as necessary

2.3 Prepare the refractory model appropriately and apply an appropriate hardener or sealant

Element:

3. Wax and invest removable partial denture

Performance Criteria:

3.1 Transfer design outline correctly to the refractory model

3.2 Select appropriate wax and pre-formed components

3.3 Wax up patterns to the refractory cast consistent with the design

3.4 Sprue the pattern using material of the correct size and in the correct shape and position for the material being cast, and attach it to the investment former

3.5 Select appropriate investment and technique according to the alloy

3.6 Prepare investment materials in accordance with manufacturers’ instructions

3.7 Treat the surface of the wax, patterns and sprues

3.8 Allow for investment setting time in accordance with manufacturer’s instructions

Element:

4. Burnout and cast removable partial denture

Performance Criteria:

4.1 Select appropriate alloy according to work order

4.2 Select burnout and preheat cycles for appropriate investment and alloy combination

4.3 Burnout wax from investment mould and hold at recommended temperature for casting

4.4 Melt alloy and cast using appropriate materials, equipment and techniques

Element:

5. Devest, trim, finish and evaluate

Performance Criteria:

5.1 Select and apply cooling cycle

5.2 Remove the cast alloy structure from the investment without damaging the integrity of the structure

5.3 Remove oxides using an appropriate abrasive or chemical treatment

5.4 Visually examine the cast alloy structure and correctly identify any casting faults and assess the viability of the casting

5.5 Remove sprues and trim and shape the alloy structure

5.6 Treat the surface of the alloy using appropriate materials and equipment, and finish using appropriate abrasives and polishes

5.7 Position the cast on the master model and check accuracy of major connection and clasps, and adjust any metal occlusal contacts with antagonist

5.8 Decontaminate the denture framework according to infection control guidelines

5.9 Dry the denture framework, replace on model and place in a sealed container for dispatch

Learning Outcomes


n completion of this course, you should be able to:

  1. Prepare master model 
  1. Construct refractory model 
  1. Wax and invest removable partial denture framework 
  1. Burnout and cast removable partial denture framework 
  1. Devest, trim, finish and evaluate alloy structures for removable partial denture


Details of Learning Activities

Theory: Lectures/tutorial  

Practical: Dental Laboratory exercises/activities 


Teaching Schedule

Term 3: Week 2 - (am) Topic Introduction and Theory Lecture

             Week 2 - (pm) Laboratory Practical Exercises: Commence

             Week 3 - Laboratory practical exercises: Continued

             Week 4 - Laboratory practical exercises: Continued

             Week 5 - Laboratory practical exercises: Continued 

             Week 6 - Laboratory practical exercises: Continued

             Week 7 - Laboratory practical exercises: Continued

Term 4: Week 8 - Laboratory practical exercises: Continued

             Week 9 - Laboratory practical exercises: Continued

             Week 10 - Laboratory practical exercises: Continued

             Week 12 - Laboratory practical exercises: Continued

             Week 13 - Laboratory practical exercises: Finalise exercise

             Week 14 - Theory and Practical Assessments


Learning Resources

Prescribed Texts


References


Other Resources

None


Overview of Assessment

Assessment 1 - Theory assessment - written test

Assessment 2 - Practical assessment 

 

To be deemed competent you must demonstrate an understanding of all aspects required of the competency. Assessment methods have been designed to measure your achievement of each competency in a flexible manner over multiple tasks.


Assessment Tasks

Assessment 1: Theory Assessment - Written Test (Week 14)

The theory assessment will include short answer questions and diagrams as required.

 

Assessment 2: Practical Assessment – Practical Skills Test (Week 14)

During your practical assessment you will be required to construct and critically evaluate 1 removable alloy framework that includes a combination of bounded and free end saddles.


Assessment Matrix

E/PC

Assessment 1:

Written

Assessment 2: Practical

1.1

 

x

 

1.2

  

x

 

1.3

 

x

 

1.4

  

x

 

1.5

  

x

 

1.6

 

 

x

1.7

 

 

x

1.8

 

 

x

2.1

 

 

x

2.2

 

 

x

2.3

 

x

3.1

               x

x

3.2

 

x

3.3

 

x

3.4

               x

x

3.5

x

x

3.6

               x

x

3.7

x

x

3.8

x

x

4.1

 

x

4.2

 

x

4.3

 

x

4.4

x 

x

5.1

x 

x

5.2

 

x

5.3

 

x

5.4

 

x

5.5

 

x

5.6

 

x

5.7

 

x

5.8

 

x

5.9

 

x

Other Information

Please refer to CANVAS, the Learning Management System (LMS) for RMIT students, for learning resources. 

Course Overview: Access Course Overview