1. 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

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

3.  Client is an anaplastologist specializing in facial prosthetics  Patients include: ◦ 50% cancer related ◦ 25% congenital ◦ 25% trauma related  Average cost is $3000-4000  Usually last 2-3 years

4.  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

5.  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

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

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

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

9. 16.8 cm 13.0 cm 10.4 cm Stabilizing Base Lexan Case Velcro Prosthetic Stabilizing Stem Putty/suction cup Chamber Construction

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

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

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

13. Cost (0.05) Reproducibility (0.2) User – Friendly (0.25) Durability (0.2) Stabilization (0.25) Total Vacuum Form9.45 6 1.2 7 1.75 6 1.2 6 1.5 6.1 Impression Mold 7.35 5 1.0 4 1.0 8 1.6 9 2.25 6.2 Polyurethane Foam 5.25 9 1.8 9 2.25 7 1.4 8 2.0 7.70

14.  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

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

16. Questions?

17.  www.huntsmancancer.org/.../facialProsthetics.jsp  The efficacy of antifungal agents incorporated into a facial prosthetic silicone elastomer, Journal of Prosthetic Dentistry  http://www.gsioutdoors.com/list.aspx?c=18&sc2=74  www.build-stuff.com/001book_vacuum_forming.ht  http://www.sultanintl.com/sw/swchannel/images/users/14868/Silg iMixImpression_L2.jpg  http://www.deccofelt.com/images/circles/big/polyurethane_foam- big.jpg  http://www.silversanitizer.com/  http://www.oacdental.com/img/dtl_niteGrind.jpg For pictures (in order of appearance)