Maxillomandibul ar Fixation The Jaw Dropping Experience of a Lifetime Our Team From left to right Emily Maslonkowski BSAC Ashley Phillips Co Team Leader Nina Lewis Co Team Leader Sara Karle BWIG Joe Ferris Communications Client Jeremy Plastic Warner MD Surgery UW Medical School Advisor William Murphy Assistant Professor Department of Biomedical Engineering Background Information Mandible is the second most fractured bone of the face Common causes of fractured mandibles 1 2 3 4 Assault Motor vehicle accidents Falls Sporting accidents 3 steps in fixing a mandible realign bones fixation and rehabilitation Jaw Forces 3 main muscles in mastication Masseter Temporalis Pterygoid Figure 1 Figure 2 Figure 3 Problem Statement Design Fixate a device which will the top of the mouth to the jaw Be easier and faster to apply Maintain an adequate cost of application Be safe for the 4 6 weeks of healing Motivation for Project Surgeons throughout history have dealt with broken mandibles in many ways Maxillomandibular fixation is outdated requires wiring the mouth shut with the use of arch bars and wires Our Client s Requirements Cost effective Dynamic Emergency release Patient comfort No forces on front teeth Time effective Safe Application Apply brackets with the light cured adhesive Connect brackets diagona with rubber bands Application time 10 20 minutes Figure 1 Materials and Costs 8 16 stainless steel brackets 6 mm x 2 mm x 2 5 mm hook length 2 5 mm 4 8 3M Unitek rubber bands GC Fuji Ortho adhesive Estimated Cost 60 per application Evaluation Pros Quick release Short application time No anesthesia necessary Aesthetically pleasing Cons Bracket detachment Future Work Upgrading the brackets Biomimetic mussel adhesive Testing with light cured adhesive on a human subject Implement our design nationwide References Goldman Kim E Mandible Fractures Ask An Oral Maxillofacial Surgeon 2005 8 Sept 2005 http www calweb com goldman mandible fractures html Muscles of Mastication Form dictates function Function follows form Nociceptive Trigeminal Inhibition Tension Suppression System 15 Sept 2005 http www nti tss com slide1 htm Peltier Jacques comp Mandible Fractures 26 May 2004 UTMB Dept of Otolaryngology 11 Sept 2005 http www utmb edu otoref Grnds Mandible fx 040526 Mandiblefx 040526 htm Prater Michael E comp Mandibular Fractures 27 Nov 1996 UTMB Dept of Otolaryngology 20 Sept 2005 http www utmb edu otoref Grnds Mandibular fx961127 Mandibular fx 961127 htm Stierman Karen and Byron J Bailey Mandible Fractures 14 June 2000 10 Sept 2005 http www utmb edu otoref Grnds Mandible fx0006 Mandible fx 0006 pdf
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