Document Detail

Effect of mouthguards on head responses and mandible forces in football helmet impacts.
MedLine Citation:
PMID:  21994059     Owner:  NLM     Status:  MEDLINE    
The potential for mouthguards to change the risk of concussion was studied in football helmet impacts. The Hybrid III head was modified with an articulating mandible, dentition, and compliant temporomandibular joints (TMJ). It was instrumented for triaxial head acceleration and triaxial force at the TMJs and upper dentition. Mandible force and displacement were validated against cadaver impacts to the chin. In phase 1, one of five mouthguards significantly lowered HIC in 6.7 m/s impacts (p = 0.025) from the no mouthguard condition but not in 9.5 m/s tests. In phase 2, eight mouthguards increased HIC from +1 to +17% in facemask impacts that loaded the chinstraps and mandible; one was statistically higher (p = 0.018). Peak head acceleration was +1 to +15% higher with six mouthguards and 2-3% lower with two others. The differences were not statistically significant. Five of eight mouthguards significantly reduced forces on the upper dentition by 40.8-63.9%. Mouthguards tested in this study with the Hybrid III articulating mandible lowered forces on the dentition and TMJ, but generally did not influence HIC or concussion risks.
David C Viano; Chris Withnall; Michael Wonnacott
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2011-10-13
Journal Detail:
Title:  Annals of biomedical engineering     Volume:  40     ISSN:  1573-9686     ISO Abbreviation:  Ann Biomed Eng     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2011-12-29     Completed Date:  2012-04-24     Revised Date:  2013-05-30    
Medline Journal Info:
Nlm Unique ID:  0361512     Medline TA:  Ann Biomed Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-69     Citation Subset:  IM    
ProBiomechanics LLC, 265 Warrington Rd., Bloomfield Hills, MI 48304-2952, USA.
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MeSH Terms
Athletic Injuries / physiopathology
Craniocerebral Trauma / physiopathology
Football / injuries
Head Movements / physiology*
Head Protective Devices*
Mandible / physiology*
Models, Anatomic*
Mouth Protectors*
Temporomandibular Joint

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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