Course Title: Construct crown and bridge structures

Part B: Course Detail

Teaching Period: Term1 2013

Course Code: DENT5262C

Course Title: Construct crown and bridge structures

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

Nicholas Greer

P: 9341 1420



Zanne Frazer

P: 9341 1402



James Moser

P:9341 1417



Narelle Tobin

P: 9341 1403


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

HLTDT301C Construct models
HLTDT302C Construct custom impression trays
HLTDT304C Articulate models and transfer records
HLTIN301C Comply with infection control policies and procedures

Course Description

This unit of competency describes the skills and knowledge you will require to construct a single crown, or a combination of two or more crowns known as a bridge. - used to replace a natural tooth. The crown and bridges that you construct are designed to restore function in harmony with the patients natural dentition. All procedures must be 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.

National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

HLTDT510C Construct crown and bridge structures


1. Prepare removable stone die

Performance Criteria:

1.1 Pour-up die stone horseshoe
1.2 Grind base of die stone to appropriate height and with level occlusal plane
1.3 Trim away undercuts from base of die stone model
1.4 Prepare die model for dowel pin and base in accordance with manufacturer's instructions


2. Duplicate model

Performance Criteria:

2.1 Prepare materials to duplicate models in accordance with manufacturer's instructions
2.2 Mix stones, die-stones and refractories in accordance with manufacturer instructions
2.3 Produce an accurate, bubble free duplicate model


3. Wax and invest fixed partial dentures and structures

Performance Criteria:

3.1 Wax up crown and bridge restorations
3.2 Sprue crown and bridge wax pattern and prepare for investing
3.3 Select appropriate investment material according to the alloy to be used
3.4 Prepare investment material according to the manufacturer's instructions
3.5 Invest wax patterns


4. Burnout, cast and finish alloy fixed partial dentures and structures

Performance Criteria:

4.1 Select burnout techniques appropriate to the investment material and alloy
4.2 Cast metal restorations in appropriate alloy
4.3 Devest metal restoration without damaging casting
4.4 Check the casting for defects
4.5 Trim and polish metal restoration while maintaining all contact areas and margins
4.6 Evaluate the finished restoration
4.7 Decontaminate the casting according to infection control guidelines
4.8 Dry the casting, replace on model and place 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 a range of different cast metal crowns and bridges in technique metal (gold). The course will develop your skills of crown and bridge construction with a focus on anatomy and harmony with the patients natural dentition (teeth).

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


  • HLTDT510C Fixed Bridge Construction 19/02/2013 (1330-1700  - 3.5 hours)
  • HLTDT510C Investment Material and Casting Defects 27/02/2013 (1330-1700 - 3.5 hours)

Practical: Various sessions delivered dependent 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;

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


Assessment Tasks

Practical exercises:

  1. Model preparation
  2. Inlays in artificial teeth
  3. Full Gold Crown
  4. Full Gold Crown
  5. 3 Unit PFM Bridge (Copings)
  6. Post and Core
  7. Composite Crown

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

Practical competency examination

  1. Full Gold Crown
  2. Composite Restoration

Theoretical examination

Fixed Bridge Construction
Investment Material and Casting Defects

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