Course Title: Construct orthodontic appliances

Part B: Course Detail

Teaching Period: Term1 2015

Course Code: DENT5788C

Course Title: Construct orthodontic appliances

School: 155T Vocational Health and Sciences

Campus: City Campus

Program: C5312 - Diploma of Dental Technology

Course Contact: Mark Doherty

Course Contact Phone: +61 3 9341 1407

Course Contact Email:

Name and Contact Details of All Other Relevant Staff


Construct orthodontic appliances

Contact: Craig McCracken

P: 9341 1410


Nominal Hours: 60

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

HLTDT301D Construct models
HLTDT302D Construct custom impression trays
HLTDT303D Construct registration rims
HLTDT304D Articulate models and transfer records
HLTDT507C Construct immediate dentures
HLTDT508C Construct removable acrylic partial dentures
HLTDT509D Cast metal alloy removable partial denture framework
HLTDT510C Construct metal, crown and bridge structures
HLTDT511C Join alloy structures
HLTDT519C Construct simple complete removable acrylic dentures and appliances
HLTIN301C Comply with infection control policies and procedures
HLTWHS300A Contribute to WHS processes

Course Description

This unit of competency describes the skills and knowledge you will require to construct removable orthodontic appliances. The appliances you construct would be used in industry to move patients teeth into a position that will provide better function and aesthetics. You will construct a range of appliances to cater for the various needs of a patient. All 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.

National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

HLTDT514D Construct orthodontic appliances


1. Select or construct and assemble components and materials

Performance Criteria:

1.1 Select materials for removable orthodontic appliances according to design and function specified by prescription
1.2 Select pre-formed components which are required and confirm they are fit for the purpose
1.3 Construct individual custom-made components according to prescription


2. Construct orthodontic appliance

Performance Criteria:

2.1 Secure components to model by appropriate means
2.2 Apply appropriate materials to the cast to form a baseplate according to the manufacturer's instructions and the prescription
2.3 Process the appliance using equipment and techniques which are appropriate to the manufacturer's instructions and the prescription


3. Finish orthodontic appliances

Performance Criteria:

3.1 Select techniques, materials and equipment for trimming, finishing and polishing that are appropriate to the type and materials of the appliance
3.2 Trim and finish the baseplate to the thickness and coverage required
3.3 Finish and polish metal components to leave surfaces that are free of sharp edges and irregularities
3.4 Evaluate the finished appliance
3.5 Decontaminate the appliance according to infection control guidelines
3.6 Place the appliance in a sealed container for dispatch

Learning Outcomes

On completion of this course you will be able to demonstrate, on a consistent basis, the construction of removable orthodontic appliances. You will develop your manual dexterity bending wires of varied gauges to facilitate various functions, coupled with processing acrylic in a range of colours to appeal to the aesthetic needs of patients.

Details of Learning Activities

  • Facilitator led discussions using Powerpoint presentations
  • In class activities
  • Simulated laboratory activities
  • Reading chapters form Anatomy of Orofacial Structures and answering questions
  • Written assessment

Teaching Schedule

The class is scheduled for delivery to the NON-APPRENTICE group (FT2) on Tuesday April 28 in the Lecture theatre of Building 154 RMIT (within the Royal Dental Hospital Melbourne) Notification will be provided via student email if the date or location change.

Following the delivery of the theory class, practical exercises will be undertaken in the laboratory.

Class schedules are detailed in the timetables provided on Blackboard (subject to change at the discrection of RMIT, in this event notification will be provided to your student email);

  1. FT2 - Tuesday - Thursday

Practical classes will be delivered in the simulated environment at RMIT where the Teacher will provide demonstration and assistance as you construct the following appliances.

  • Hawley Retainer
  • Expansion Plate
  • Buccal Retractor
  • Recurrent Bow Retainer

The TIER 2 exercises are made available if you complete all of the previous exercises and are seeking further practice prior to the assessments. The time guides for the TIER 2 exercises are reduced and require a ’self-managed approach’ to complete the exercise.

  • TIER 2 -  Orthodontic appliance

Learning Resources

Prescribed Texts

Anatomy of Orofacial Structures


Mosby's Dental Dictionary



Other Resources

  • Powepoint available on MYRMIT Blackboard under the program code C5312 and the Unit of Competence HLTDT514D/DENT5788C Construct orthodontic appliances
  • RMIT online learning Hub
  • Library
  • Internet links
  • Primal Pictures
  • Journals, Brochures, Pamphlets, Newspapers, Magazines

Overview of Assessment

You will be assessed in a simulated workplace and under the normal range of work conditions.

You will be assessed on both the essential knowledge and the demonstration of essential skills through;

Completion of practical exercises - including detailed self reflection of each exercise
Practical exam
Theory exam


Assessment Tasks

You will attempt the following practical exercises under supervision of the teacher and you will be graded with either a Px (Satisfactory) or NYC (Not Satisfactory) according to the assessment guidelines outlined in the practical exercise book; in accordance with the training package elements & essential skills.

  1. Hawley Retainer
  2. Expansion Plate
  3. Buccal Retractor
  4. Recurrent Bow Retainer

The TIER 2 exercises are made available if you complete all of the previous exercises and are seeking further practice prior to the assessments. The time guides for the TIER 2 exercises are reduced and require a ’self-managed approach’ to complete the exercise. If you attempt the following practical exercises you will be graded with either a Px (Satisfactory) or NYC (Not Satisfactory) according to the assessment guidelines outlined in the practical exercise book; in accordance with the training package elements & essential skills.

  1. TIER 2 - Orthodontic appliance

Upon completion of an exercise and prior to submission for assessment, all exercises undertaken in the practical classes will require you to provide a detailed reflection of your own work focussing on areas of the appliance that were successful as well as areas that could be improved upon next time.

The practical exam will take place under supervision in the simulated working environment at RMIT. The exam will take place under exam conditions and you will be given details of the requirements and assessment guidelines in the practical book available in class and on BlackBoard.

  1. PRAC EXAM - Hawley Retainer

The two theory exams will be conducted under supervision at RMIT under exam conditions.

  1. Construct Orthodontic Appliances - Theoretical examination - pass mark 60%

Assessment Matrix

To achieve a grade of CA (Competency Achieved) for the unit HLTDT514D/DENT5788C Construct orthodontic appliances you are required to obtain a pass result (PX or CA) for the following theoretical and practical assessments that are used to measure; elements, performance criteria, essential knowledge and essential skills as outlined in the health training package.

  1. PRAC EXAM - Hawley Retainer

  2. Construct Orthodontic Appliances - Theoretical examination - pass mark 60%


Failure to complete any of the above listed tasks/assessments will result in an NYC (not yet competent) result for unit HLTDT514D/DENT5788C Construct orthodontic appliances. An NYC (not yet competent) result will be entered in the student record. This will result in non-completion of this unit of competence requiring re-enrolment incurring fees and a return to class work and completion of any relevant assessments at the time of the re-enrolment.

The scheduled dates for the assessments are as follows;

Apprentice FT2: Thursday May 28th (The assessment process must be finalised and a result entered by July 1st 2015)

Other Information


RMIT University requires that you present YOUR work for assessment. Plagiarism is a form of cheating. It is the presentation of the work or idea of another person. Plagiarism is NOT acceptable. Penalities can include charges of acedemic misconduct, cancellation of results and exclusion from your course.

Please note: It is also a disciplinary offence to allow your work to be plagiarised by another student. When signing the coversheet to submit your learning guides and assessments.

Special consideration:

Please note: Students may apply for Special Consideration as per the information via the RMIT website

if they believe complete assessment for this unit by the submission date has been affected by factors beyond their control. Special consideration must be lodged prior to or within 48 hours of the scheduled assessment time or assessment submission date. The application for Special Consideration is NOT granted automatically on application.

RMIT assessment policies - RMIT University

Special consideration online application - RMIT University:

Non completion or non-submission of compulsory tasks:

Failure to complete any or all of the compulsory tasks listed above will prevent the student from achieving a CA (competency achieved) result for unit HLTDT514D/DENT5788C Construct orthodontic appliances. This will result in the student not completing the unit successfully. NYC (not yet competent) will be recorded and re enrolment will be required to continue the unit/program. Fees will be incurred. Please note: A second opportunity for assessment will not be granted unless the student has applied for and been granted special consideration as per RMIT assessment policy.

Assessment Appeal Process:
The Appeals Against Assessment policy and procedure applies to all coursework programs in all careers. The appeal process is staged and students are required to follow each stage in order to ensure their full entitlement to appeal is available

Students are required to support the learning outcomes this Unit with work based experience and/ or further self managed research to support positive outcomes in this Unit.

To undertake practical exercises and /or assessment students MUST present for the assessment process as follows:

Please note these are also WH&S requirements for laboratory safety.

In appropriate practical class attire (Protective clothing for legs - if shorts, must cover knees, lab coat, safety glasses)
Fully covered in leather(not suede) footwear

Hair to be contained by tying back or in appropriate hair cover.
No artificial fingernails to be worn
The wearing of henna is acceptable.
Short, clean fingernails (no nail polish)
No jewellery to be worn on the hands or wrists. Wedding rings or jewellery that cannot be removed for cultural reasons must be taped with an appropriate waterproof tape
All cuts/ skin abrasions on the hands or wrists must be covered with a waterproof dressing

A student that is non-compliant with any of the above requirements will not be permitted to undertake practical exercises or assessment at the scheduled time. The student will be rescheduled to undertake assessment at a later date.


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