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Maxillomandibular 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 Warner, MD

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maxillomandibular fixation

Maxillomandibular Fixation

“The Jaw-Dropping Experience of a Lifetime”

our team
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
Client
  • Jeremy Warner, MD
    • Plastic Surgery, UW Medical School
advisor
Advisor
  • William Murphy
    • Assistant Professor, Department of Biomedical Engineering
background information
Background Information
  • Mandible is the second most fractured bone of the face
  • Common causes of fractured mandibles
    • Assault
    • Motor vehicle accidents
    • Falls
    • Sporting accidents
  • 3 steps in fixing a mandible: realign bones, fixation, and rehabilitation
jaw forces
Jaw Forces
  • 3 main muscles in mastication
    • Masseter
    • Temporalis
    • Pterygoid

Figure2

Figure1

Figure3

problem statement
Problem Statement
  • Design a device which will:
    • Fixate 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
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  • Maxillomandibular fixation is outdated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

Our Client’s Requirements
application
Application
  • Apply brackets with the
  • light cured adhesive
  • Connect brackets diagonally
  • with rubber bands
  • Application time: 10-20
  • minutes

Figure 1

materials and costs
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
Evaluation
  • Cons
    • Bracket detachment
  • Pros
    • Quick release
    • Short application time
    • No anesthesia necessary
    • Aesthetically pleasing
future work
Future Work
  • Upgrading the brackets
  • Biomimetic mussel adhesive
  • Testing with light cured adhesive on a human subject
  • Implement our design nationwide
references
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/Mandible-fx- 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-fx- 961127/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-fx- 0006/Mandible-fx-0006.pdf>.
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