Course Title: Construct and insert an implant retained overdenture

Part B: Course Detail

Teaching Period: Term2 2013

Course Code: DENT5253C

Course Title: Construct and insert an implant retained overdenture

School: 155T Vocational Health and Sciences

Campus: City Campus

Program: C6081 - Advanced Diploma of Dental Prosthetics

Course Contact: Mark Doherty

Course Contact Phone: Ph: (03) 9341 1407

Course Contact Email:

Name and Contact Details of All Other Relevant Staff

Olga Tsibidis                 9341 1410

Craig McrCracken   9341 1410

Zanne Frazer                  9341 1402

Nominal Hours: 75

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

HLTIN301A Comply with infection control policies and procedures in health work
HLTIN302A Process reusable instruments and equipment in health work.
HLTOHS400A Maintain occupational h

Course Description

Construct and insert an implant retained overdenture

National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

HLTDP608B Construct and insert an implant retained overdenture


1. Plan treatment
2. Take a primary impression
3. Prepare to take a final impression
4. Take the final impression
5. Pour master cast and fabricate occlusal rims
6. Establish maxillomandibular relations
7. Try-in of waxed denture in client’s mouth and process
8. Insert the completed overdenture

Performance Criteria:

1.1 Make accessible in the clean zone of the surgery the client’s required laboratory work and necessary charts and records
1.2 Obtain accurate, complete and legal records of the client’s personal, medical and dental history
1.3 Interpret prescription where required
1.4 Provide full details of the procedure to the client and/or carer
1.5 Obtain and document consent following ethical and legal requirements
1.6 Implement standard precaution during all procedures
1.7 Ensure emergency procedures are in place and ready for use according to relevant guidelines

2.1 Select correctly the equipment, instruments and materials for the primary impression
2.2 Take primary impressions of the maxilla and/or mandible using an alginate material in stock edentulous trays
2.3 Relieve the denture in the area of the abutments
2.4 Reline the denture with a tissue conditioning material
2.5 Pour alginate impression in dental stone and trim for custom tray fabrication

3.1 Fabricate an open window custom tray to provide an accurate impression of tissue details and the relationship of the abutments to one another and to surrounding oral tissues
3.2 Ensure abutment screw tightness
3.3 Attach impression copings to the abutments with the proper length guide pins
3.4 Try-in the custom tray in the mouth and check for comfort and path of insertion
3.5 Mould the borders of the custom tray
3.6 Seal the window with baseplate wax and soften in a heated water bath
3.7 Insert custom tray over the guide pins and impression copings

4.1 Paint the custom tray with an appropriate adhesive for the impression material to be used
4.2 Mix the selected impression material according to the manufacturer’s specifications
4.3 Load the impression material into the tray and syringe and inject around the impression copings
4.4 Seat the impression tray using the guide pins and holes in the wax window as a guide for placement
4.5 Complete moulding of the borders
4.6 Clear excess impression material from guide pins before complete setting
4.7 Loosen the guide pins and remove the impression    

5.1 Screw replicas onto the impression copings with guide pins
5.2 Bead and box the final impression and cast in diestone
5.3 Unscrew each guide pin completely before separating the impression from the cast
5.4 Fabricate attachment and bar extensions according to the prescription
5.5 Evaluate casting for accuracy of fit on the abutments
5.6 Fabricate a customized record base incorporating attachments
5.7 Add occlusal rims to the trimmed and polished base

6.1 Position the attachment bar in the mouth
6.2 Place pressure indicator paste on the fitting surface of the base and ensure the base is fully seated in the mouth
6.3 Check the base for attachment retention and potential pressure areas
6.4 Record maxillomandibular relationships
6.5 Establish lip support and phonetics at the correct vertical dimension
6.6 Select tooth shade and denture tooth mould

7.1 Evaluate trial denture for tooth arrangement, aesthetics, phonetics and vertical dimension of the occlusion
7.2 Adjust the trial denture for denture soreness
7.3 Record another centric relation and process as normal
7.4 Ensure complete seating of the overdenture into the attachment bar      

8.1 Snap denture onto the attachment bar
8.2 Use pressure indicator paste to adjust any potential sore areas
8.3 Check centric relation and remount denture for final adjusment
8.4 Provide hygiene and home care instructions



Learning Outcomes

On completion of this unit you will have the skills and knowledge required to construct and place an aesthetic and functional implant retained overdenture.

Details of Learning Activities

Participate in theory sessions and practical workshops
Using workplace scenarios, participate in simulations/role plays/case studies dealing with implant retained overdenture procedures
Participate in individual case studies/simulations dealing with the provision of service of an implant retained overdenture in dental prosthetist workplace.

Teaching Schedule

• Applied oral anatomy
• Dental and medical records and charts
• The reasons for taking radiographs and photographs
• Confidentiality of client records
• the purpose of study casts and the materials used in their construction
• The purpose and requirements for maintaining accurate records of examination, treatments, materials used and drugs/medicaments prescribed
• Knowledge of the advantages of an implant retained overdenture to the client
• Knowledge of the disadvantages of implant retained overdentures
• Implant attachment options for overdentures
• Knowledge of why medical and dental emergencies occur and the appropriate response
• Knowledge of dental materials
• Retracting soft tissues and moisture control
• Knowledge of the importance for clients to follow pre and post operative instructions

Teacher: Olga Tsibidis

Learning Resources

Prescribed Texts

"Pocket Atlas of Oral Diseases" by G.Laskaris (Thieme books) "Prosthetic Treatment of the Edentulous Patient" 5th Ed. by R M Basker and J C Davenport (Blackwell Munksgaard books)


Other Resources

Online research.
RMIT Library.

Overview of Assessment


Assessment Tasks

Scenario based patient record detailing treatment planning and addressing all areas of underpinning knowledge.Word processed document
Assessor: Olga Tsibidis


Completion of the practical stages in the construction of an implant retained over-denture as a simulated practical exercise. Practical demonstration
Assessor: Olga Tsibidis


*All assessment tasks must be successfully completed before competency can be obtained

Pool of Practical Observers: Zanne Frazer, Craig McCracken, Olga Tsibidis,

Assessment Matrix

Assignment 50% Practical 50%

Course Overview: Access Course Overview