Course Title: Construct models

Part B: Course Detail

Teaching Period: Term1 2013

Course Code: DENT5781C

Course Title: Construct models

School: 155T Vocational Health and Sciences

Campus: City Campus

Program: C5312 - Diploma of Dental Technology

Course Contact: Mark Doherty

Course Contact Phone: 03 9341 1407

Course Contact Email:

Name and Contact Details of All Other Relevant Staff

Nicholas Greer

P: 9341 1420



Zanne Frazer

P: 9341 1402



James Moser

P:9341 1417



Narelle Tobin

P: 9341 1403


Nominal Hours: 30

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

HLTIN301C Comply with infection control policies and procedures
HLTWHS200A Participate in WHS processes

Course Description

This unit of competency describes the skills and knowledge required for you to construct a range of models from a impressions and moulds of patients upper and lower jaws. The models you construct will be used as the foundation for various dental appliances, such as; special trays, mouthguards, full dentures, partial dentures, crown and bridge, cobalt chrome frameworks . 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:

HLTDT301D Construct models


1. Verify integrity of impressions

Performance Criteria:

1.1 Apply standard precautions when receiving, handling and working on dental materials
1.2 Decontaminate impressions according to infection control guidelines
1.3 Examine impressions for defects
1.4 Check impressions to ensure they meet the specifications of the work order
1.5 Handle impressions with care to avoid damage or distortion
1.6 Ensure accompanying models are intact with no defects or adjustments
1.7 Prepare a range of impressions for pouring


2. Select and prepare model materials

Performance Criteria:

2.1 Select appropriate model materials
2.2 Ensure all equipment used for mixing materials is clean
2.3 Prepare model materials in accordance with desired outcomes
2.4 Maintain and store model materials in accordance with manufacturer's instructions


3. Pour impressions

Performance Criteria:

3.1 Pour model materials into impressions in accordance with accepted techniques
3.2 Allow required setting time


4. Finish model

Performance Criteria:

4.1 Separate an intact model from the impression
4.2 Inspect the model for defects
4.3 Trim the model in accordance with requirements
4.4 Duplicate the master cast to create a working model where required by prescription

Learning Outcomes

On completion of this course you will be able to demonstrate, on a consistent basis, the process involved in constructing models from impressions and silicone moulds of patients upper and lower jaws for use as a foundation for various dental appliances to be constructed upon.

Details of Learning Activities

Participation in group activities based on a simulated workplace exercises.
Practical exercises
Individual exercises carrying out requirements of competency.
Student experiences in workplace “on job training”

Teaching Schedule


  1. Gypsum Products - 07/02/2013 (0830 -1230 - 4 hours)
  2. Models, Dies and Trays - 08/02/2013 (0830 - 1230 4 hours)
  3. Tooth Morphology session 1 - 13/02/2013 (0830 - 1230 4 hours)
  4. Tooth Morphology session 2 - 14/02/2013 (0830 - 1230 4 hours)
  5. Construct Orthodontic Study Models (Various dates depending on students group block) (0830- 1700 ALL DAY Theory/Prac)

Practical: Various sessions delivered dependenat on the group.

Learning Resources

Prescribed Texts

Anatomy of Orofacial Structures


Mosby's Dental Dictionary



Other Resources

  • 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;

  1. Completion of practical exercises - including detailed self reflection of each exercise
  2. Practical exam
  3. Theory exam 

Assessment Tasks

Practical exercises:

  1. Primary Full/Full casts
  2. Secondary Full/Full casts
  3. Maxillary and Mandibular Orthodontic Study casts

Assessment guidelines for the practical exercises, as outlined in the practical exercise book.

Theoretical assignment

Tooth Carvings

Theoretical examination

Gypsum Products
Models, Dies and Trays incorporating Construct Orthodontic Study Models
Tooth Morphology

Each subject is one element of the 3 hour exam (divided into competencies) PASS MARK 60%, If ’NYC’ (Not Yet Competent) result is achieved the student will be provided with detailed feedback of the shortcomings and given a further opportunity to sit a secondary exam.

If a grade of 40% or less is achieved the student will NOT be granted an opportunity to sit a secondary exam and the student will be required to re-enroll in the unit which will be incurr fees.

Please note: A subsequent NYC result for any of above mentioned assessments may require the student to attend further class work within their enrolment period or may result in the student re-enrolling in the unit which will be incurring fees.

Assessment Matrix

Other Information

Please Note: Students may apply for Special Consideration as (per the information provided in the Student Handbook ) via the RMIT Hub @ http:/ consideration if they believe their ability to 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.

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 clinical 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 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.


Course Overview: Access Course Overview