Bronco Billy, on 06 June 2012 - 11:17 AM, said:
First off I was wrong (misremembered) Regarding Stenger and Hickey studies. Stenger researched ND football players for a year. Hickey did the research on cadavers with the documentation of a 50% reduction in force when a mouthguard is used.
Ok, ol timer.
The only actually link you've provided is from a website that sells mouthguards as "jaw-joint protectors" so I'm going to take it with a grain of salt. All three of your studies are simply clips from their sales pitch. But let's examine them a little further to determine if you inspect those assertions with the “slightest care” and see if a reasonable modicum of logic passes the smell test.
Bronco Billy, on 06 June 2012 - 11:17 AM, said:
Lim also did a study in 2005 with boil and bite mouthguards and load cells and showed that the mouthguard did in fact lessen the impact of blows.
The problem with this study is the theory that a mouth guard prevents concussions after a blow to the jaw (in which forces are thought to move upwards to the base of the brain) by positioning the jaw in such a manner that it absorbs the impact forces instead of the brain. For football I'd say the vast majority of hits are helmet/facemask to helmet/facemask. Very few hits occur where the person's head is bent back enough to expose their chin to concussion blow. Is it possible that in that very specific instance a mouthguard "helps". Sure, I'd give that. Unfortunately, I think that does nothing to help real life football players in the vast majority of concussion instances. So unless Lim's load cell test showed that wearing a mouthguard helped prevent concussions while getting a helmet in the ear hole I'd say it is worthless. In fact my googling around on the topic, the Lim study is almost never found except talking about dental damage (google shows it being only cited 4 times for transmission of force across the human jaw, while the dental aspect is cited 28). Lim is never mentioned in any of the serious articles I've found on the topic. This study is used as a sales pitch and not serious science for the topic of football concussion prevention in the US.
Bronco Billy, on 06 June 2012 - 11:17 AM, said:
Finch also has a 2005 study showing boil and bite mouthguards are effective at reducing head and facial injuries including concussions
First, this is for Australian rules football where they don’t wear helmets. The point of this study was also to show custom fit mouthguards protected better than standard mouthguards. A study of a sport with no helmets and no specific information on concussion prevention.
Here is a link to the abstract of that study.
http://injuryprevent.../4/242.abstract and the conclusion "There was a significant protective effect of custom made mouthguards, relative to usual mouthguard use, during games."
Again this is a study used in a sales pitch and isn’t even discussed in articles that are taking to task the science (or lack thereof) of people that claim your side of the argument. Following this as science for proof of anything related to US football concussion prevention is laughable when the only information included was grouped into head/oral facial injuries along with concussions. A study of a sport with no helmets and no specific information on concussion prevention. This study is at least cited by 40 different topics by google search. Unfortunately those seem to mainly just say that custom fit mouthguards are better than standard.
Bronco Billy, on 06 June 2012 - 11:17 AM, said:
and Kuipers did a 2009 study that shows mouthguatrds prevent dental injuries.
I think everyone can agree that a mouthguard prevents dental injuries. Especially in Hockey which the Kuipers study was actually done. Again, this also has the same flaw as assuming that NFL concussions are from being struck in the chin.
I always wore a shock doctor for dental protection (my dad works at a Dental lab) but I don’t believe there is any good valid science that says mouthguards have anything to do with concussion prevention in US football.
Here is a link to a report from Dr. McCrory (cited over 500+ times in google research on the subject) along with his conclusion.
http://bjsportmed.co.../2/81.full.html
Conclusions
The ability of mouthguards to protect against head and spinal injuries in sport falls into the realm of “neuromythology” rather than hard science.32 Reading the original studies cited as evidence for this effect reveals anecdotal claims that can best be described as bizarre rather than reflecting established medical principles. It is unlikely that a mouthguard would offer effective protection against brain or spinal cord injury, and the limited published data are not compelling in this regard nor does it accord with the known pathophysiology of such injuries.
Here is another link to an article that challenges most of the science that is usually cited.
http://blog.medfrien...ds-prevent.html
Even at the link you provided to Brain Pads that is selling these "Jaw Joint protectors" states the following:
"Even though the effectiveness of mouthguards in preventing concussions
currently remains controversial Brain-Pad® shows promising results and may soon lead to a significant advancement in protection technology (Barbic 2005, Maeda 2009).
There is still much debate over the protective effect of traditional mouthguards including the boil and bite and custom made mouthguards. However there is no evidence to suggest that wearing any type of mouthguard is detrimental to the athlete and therefore are recommended as a precautionary measure in hopes to prevent injury."
Bronco Billy, on 06 June 2012 - 11:17 AM, said:
Instead, because someone asserts it, backs it up with very shaky data or slants the data badly to their favor, and it fits a particular viewpoint; people just lay back and accept it as true and fit their opinions and actions to accomodate it. Whether its much more universal stuff like AGW or jobs created/saved numbers among many other examples, or something more localized and less impactful like this, there doesn't seem to be any will to inspect the assertions with even the slightest care, but rather to accept them simply as gospel truth. It really is quite disturbing.
Seems that your assertions were backed up with shaky data.and stating wearing mouthguards does protect against concussions in US football is factually false. So I agree, it really is quite disturbing.