Unit of competency Outline
Date retreived
22/07/2026 11:34 PM AWST
22/07/2026 11:34 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Construct and insert an implant retained overdenture
Construct and insert an implant retained overdenture
Unit of competency
National Code
HLTDP608C
HLTDP608C
State Code
WD121
WD121
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
28/08/2012
Field of Education
060705 - Dental Technology
Original Release Date
28/08/2012
Nominal Hours
220
Description
DescriptorThis unit of competency describes the skills and knowledge required to construct and place an aesthetic, and functional implant retained overdentureAll 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
Notes
Elements and Performance Criteria
1. Plan treatment
- 1.1 Make accessible in the clean zone of the surgery the client's required laboratory work and necessary charts andrecords
- 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. Take a primary impression
- 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. Prepare to take a final impression
- 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. Take the final impression
- 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. Pour master cast and fabricate occlusal rims
- 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. Establish maxillomandibular relations
- 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. Try-in of waxed denture in client's mouth and process
- 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. Insert the completed overdenture
- 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
RANGE STATEMENT
The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.
Charts, records and required laboratory work may include:
Completed medical questionnaires
Consent documents obtained for treatment
Copies of correspondence relating to the client
Dental charts and dental treatment records
Diagnostic models
Notes made by staff following telephone conversations
Photographs
Radiographs, tracings and measurements
Records of financial transactions
Reports to and from referring dentists and specialists
Personal protective equipmentmay include:
Examination gloves that comply with AS/NZS 4011 and surgical gloves that comply with AS/NZS 4179
Footwear to protect from dropped sharps and other contaminated items
Glasses, goggles or face-shields
Gowns and waterproof aprons that comply with AS 3789.2 and AS 3789.3
Guidelines for latex allergic clients and staff
Surgical face masks that comply with AS 4381
Standard precautions must include:
Appropriate reprocessing and storage of reusable instruments
Aseptic technique
Personal hygiene practices especially washing and drying hands before and after client contact
Safe disposal of sharps and other clinical waste
Safe handling of sharps
Surface cleaning and management of blood and body fluid spills
Techniques to limit contamination
Use of personal protective equipment
Attachment and bar extension options may include:
Bar attachment systems:
mechanical - clips, stud, O-rings
magnetic
Unconnected fixture options
mechanical - magnetic
Maxillomandibular relationships must include:
Centric relation records
Protrusive records
Facebow registration
Hygiene, home care and maintenance instructions may include but are limited to:
Instructing the client:
on the removal of the overdenture
on the use of a standard soft toothbrush to brush abutments
on the use of dental floss to clean under the bar and around each abutment cylinder
on the use of an interdental brush to clean the under surface of the denture and the overdenture framework
to attending for review one month after overdenture insertion
Establishing a recall interval of 3 to 6 months as determined by the client history
The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.
Charts, records and required laboratory work may include:
Completed medical questionnaires
Consent documents obtained for treatment
Copies of correspondence relating to the client
Dental charts and dental treatment records
Diagnostic models
Notes made by staff following telephone conversations
Photographs
Radiographs, tracings and measurements
Records of financial transactions
Reports to and from referring dentists and specialists
Personal protective equipmentmay include:
Examination gloves that comply with AS/NZS 4011 and surgical gloves that comply with AS/NZS 4179
Footwear to protect from dropped sharps and other contaminated items
Glasses, goggles or face-shields
Gowns and waterproof aprons that comply with AS 3789.2 and AS 3789.3
Guidelines for latex allergic clients and staff
Surgical face masks that comply with AS 4381
Standard precautions must include:
Appropriate reprocessing and storage of reusable instruments
Aseptic technique
Personal hygiene practices especially washing and drying hands before and after client contact
Safe disposal of sharps and other clinical waste
Safe handling of sharps
Surface cleaning and management of blood and body fluid spills
Techniques to limit contamination
Use of personal protective equipment
Attachment and bar extension options may include:
Bar attachment systems:
mechanical - clips, stud, O-rings
magnetic
Unconnected fixture options
mechanical - magnetic
Maxillomandibular relationships must include:
Centric relation records
Protrusive records
Facebow registration
Hygiene, home care and maintenance instructions may include but are limited to:
Instructing the client:
on the removal of the overdenture
on the use of a standard soft toothbrush to brush abutments
on the use of dental floss to clean under the bar and around each abutment cylinder
on the use of an interdental brush to clean the under surface of the denture and the overdenture framework
to attending for review one month after overdenture insertion
Establishing a recall interval of 3 to 6 months as determined by the client history
EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.
Critical aspects for assessment and evidence required to demonstrate this competency unit:
The individual being assessed must provide evidence of specified essential knowledge as well as skills
Observation of workplace performance is essential for assessment of this unit
Consistent compliance with infection control guidelines, Australian and New Zealand Standards and legislative requirements as they relate to the dental prosthetist's specific job role
Consistency of performance should be demonstrated over the required range of workplace situations
Method of assessment
Evidence of essential knowledge and understanding may be provided by:
traditional or online (computer-based) assessment
questions during workplace assessment
written assignments/projects
Case study and scenario as a basis for discussion of issues and strategies to contribute to best practice
Staff and/or client feedback
Supporting statement of supervisor
Authenticated evidence of relevant work experience and/or formal/informal learning
Role play/simulation
Access and equity considerations:
All workers in the health industry should be aware of access and equity issues in relation to their own area of work
All workers should develop their ability to work in a culturally diverse environment
In recognition of particular health issues facing Aboriginal and Torres Strait Islander communities, workers should be aware of cultural, historical and current issues impacting on health of Aboriginal and Torres Strait Islander people
Assessors and trainers must take into account relevant access and equity issues, in particular relating to factors impacting on health of Aboriginal and/or Torres Strait Islander clients and communities
The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.
Critical aspects for assessment and evidence required to demonstrate this competency unit:
The individual being assessed must provide evidence of specified essential knowledge as well as skills
Observation of workplace performance is essential for assessment of this unit
Consistent compliance with infection control guidelines, Australian and New Zealand Standards and legislative requirements as they relate to the dental prosthetist's specific job role
Consistency of performance should be demonstrated over the required range of workplace situations
Method of assessment
Evidence of essential knowledge and understanding may be provided by:
traditional or online (computer-based) assessment
questions during workplace assessment
written assignments/projects
Case study and scenario as a basis for discussion of issues and strategies to contribute to best practice
Staff and/or client feedback
Supporting statement of supervisor
Authenticated evidence of relevant work experience and/or formal/informal learning
Role play/simulation
Access and equity considerations:
All workers in the health industry should be aware of access and equity issues in relation to their own area of work
All workers should develop their ability to work in a culturally diverse environment
In recognition of particular health issues facing Aboriginal and Torres Strait Islander communities, workers should be aware of cultural, historical and current issues impacting on health of Aboriginal and Torres Strait Islander people
Assessors and trainers must take into account relevant access and equity issues, in particular relating to factors impacting on health of Aboriginal and/or Torres Strait Islander clients and communities
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| D8179 | HLTDP608B | Construct and insert an implant retained overdenture | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| AWA32 | HLTDEP008 | Construct and insert an implant retained overdenture | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| J113 | HLT60412 | Advanced Diploma of Dental Prosthetics | Qualification |