Fabrication of an Implant-Supported Prosthetic Ear

A Presentation by T. MARNEWICK

In partial fulfilment of the BTech: Dental Technology

Content

1. Patient’s history and background2. Possible treatment plans3. Most suitable treatment plan and

treatment plan of choice4. Laboratory procedures5. References

Patient’s History and Background

• Patient was involved in a motorcar accident in 1999

• Lost left ear and fractured left side of his mandible

• Undergone four operations

Patient’s History and Background cont.

• Internal implants were placed in the mandible

• Implants were rejected due to

active Hepatitis B

• Implants were removed

Patient’s History and Background cont.

• A prosthetic ear was made in 2000 by Mr. A Jansen a former student

• Due to active Hepatitis B implants could not be used

• Mechanical retention was used with aid of spectacles

• Patient has now recovered from Hepatitis B

• This year the prosthesis needs to be replaced

Possible Treatment Plan #1

• Placement of implants into the left side of patients’ skull

• Using a dolder bar attachment to attach prosthetic ear1

Possible Treatment Plan # 2

• Using old mechanical retention to keep prosthesis in place

• Fabricating a new ear prosthesis

Possible Treatment Plan # 3

• Fabricating a new prosthesis

• Using a medical adhesive for prosthesis retention.2

Most suitable treatment plan

• Implants with dolder bar attachment

Reasons:Excellent retention Maximum patient

confidencePatient comfort3

Laboratory procedures

• Impression arrives• Model is poured

with laboratory analogues

• Plastic sleeves attached to analogues

Laboratory procedures cont.

• Dolder bar waxed up• Wax bar removed from analogues• Wax bar invested and cast• Metal bar finished• Now the prosthesis can be made

Laboratory procedures cont.

• The ear is sculpted on the model

• The sculpted ear is tried on patient4

Laboratory procedures cont.

• Mould is made• Mould is packed• After

polymerization prosthesis is removed from mould

Laboratory procedures cont.

• Extrinsic colouring added

• Final fitment on patient3

Thank you

REFERENCES1. Hobskrik J. Watson R. Searson L. Introducing Dental

Implants. London: Churchill Livingstone. 2003:123-130.

2. Wardbooth P. Eppley B. Schemlzeisen R. Maxillo Trauma and Esthetic Facial Reconstruction. London: Churchill Livingstone. 2003: 445-459.

3. Taylor T. Clinical Maxillo Facial prosthesis.London:Quintessence publising Co. 2000:233-244,245-264.

4. McKinstry R. Fundementals of facial prosthesis.Arlington: ABI Professional publications. 1995:19-30,59-78,79-98,147-98.