Team Members: Team Leader- Kenny Roggow BSAC- Ozair Chaudhry Communicator- Evan Joyce BWIG- Adam Goon Advisor- Professor John Webster, Department of Biomedical Engineering Client- Greg Gion, Medical Art Prosthetics LLC

 Why build a chamber?  Existing Storage  Client Requirements  Chamber Construction  Design Alternatives  Future Work

 Client is an anaplastologist specializing in facial prosthetics  Patients include: ◦ 50% cancer related ◦ 25% congenital ◦ 25% trauma related  Average cost is $  Usually last 2-3 years

 Lifespan of prosthetic ◦ Moisture causes Candida albican and other fungal growth  Embeds in silicone rubber  Makes prosthetic unusable ◦ Safe storage is important  Delicate parts  UV degrades silicone rubber

 Stored in makeshift containers ◦ Damage from pets or children ◦ Delicate surfaces damaged when not in use  Create standardized chamber for protection ◦ Fit array of prosthetics ◦ Stabilization ◦ Antimicrobial element

 Cardboard containers ◦ Stuffed with tissue paper for shipping  Plastic orthodontic retainer case ◦ Have holes for ventilation

 Aesthetically pleasing  Variety of prosthetics  Reproduced easily  Safeguard and stabilize  Everyday use  Shipping  Antimicrobial element  Inhibit fungal growth  Decrease moisture

 Air tight Lexan case  Top stabilizer stem ◦ Attached to chamber lid with Velcro ◦ Soft putty ◦ Suction cup-orbital  Alternative base

16.8 cm 13.0 cm 10.4 cm Stabilizing Base Lexan Case Velcro Prosthetic Stabilizing Stem Putty/suction cup Chamber Construction

 Sheet of polystyrene is heated  Vacuum pulls plastic over clients mold  Creates negative of patient’s prosthetic

 Two part silicone rubber ◦ Vinyl polysiloxane  Prosthetic placed in mixture while curing  Accurate rigid negative of prosthetic

 Wide range of uses  Rests in base of chamber ◦ Situated with Velcro  Porous material ◦ Compresses to custom fit ◦ Absorbs moisture  Periodic replacement is necessary

Cost (0.05) Reproducibility (0.2) User – Friendly (0.25) Durability (0.2) Stabilization (0.25) Total Vacuum Form Impression Mold Polyurethane Foam

 Silver Ion Spray ◦ Kills wide spectrum of fungus ◦ Applied to prosthetic or base ◦ Well understood in its antimicrobial effects ◦ Shuts down enzymes  Supplement to current cleaning method

 Construction  Testing of stabilization  Testing of silver spray for antimicrobial effect

Questions?

  The efficacy of antifungal agents incorporated into a facial prosthetic silicone elastomer, Journal of Prosthetic Dentistry    iMixImpression_L2.jpg  big.jpg   For pictures (in order of appearance)