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- This topic has 7 replies, 6 voices, and was last updated 01/02/2012 at 5:16 pm by Drsumitra.
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06/10/2010 at 3:59 pm #9647AnonymousOnlineTopics: 0Replies: 1150Has thanked: 0 timesBeen thanked: 1 time
The Proton Magnesium Toothbrush (PM) developed by Japanese scientists does not require the use of toothpaste; these can replace the traditional way of teeth cleaning. This brush cleans teeth by producing an electrical current inside the mouth which clears plaque from the teeth.
The PM Toothbrush has two metal discs inserted on back made of magnesium and copper. These discs interact with each other in the saliva creating a low voltage electric current which magnetizes plague away from teeth and kill bacteria which cause bad breath. The brush needs to be rinsed in water before brushing, but once inside the mouth the saliva acts as a suitable conductor for the electricity. The toothbrush generates between 0.8 volts and 1.8 volts and a current ranging from 300 to 3,000 micro amps.06/10/2010 at 6:02 pm #14327tirathOfflineRegistered On: 31/10/2009Topics: 353Replies: 226Has thanked: 0 timesBeen thanked: 0 times07/10/2010 at 7:01 pm #14328sushantpatel_docOfflineRegistered On: 30/11/2009Topics: 510Replies: 666Has thanked: 0 timesBeen thanked: 0 times08/10/2010 at 4:42 am #14329Anonymous09/10/2010 at 12:56 pm #14330gaurang_thanvi2003OfflineRegistered On: 06/11/2009Topics: 41Replies: 83Has thanked: 0 timesBeen thanked: 0 times10/10/2010 at 4:48 pm #1433110/10/2011 at 2:15 pm #14636EricTownsendCould this be incorporated into an electric toothbrush or does this process not require an mechanical removal of the plaque?
01/02/2012 at 5:16 pm #15133DrsumitraOfflineRegistered On: 06/10/2011Topics: 238Replies: 542Has thanked: 0 timesBeen thanked: 0 timesIn a recent study, Dr. Martinus J. Verkaik, et al evaluated the antimicrobial efficacies of 2 toothpaste formulations containing natural antimicrobials (herbal extracts and chitosan) against oral biofilms of different composition and maturational status. Bacteria from a buffer suspension or fresh saliva were adhered to a salivary conditioning film for 2 hours, after which they were grown for 16 hours. Dual-species biofilms were prepared from Actinomyces naeslundii T14V-J1 and Streptococcus oralis J22, and multispecies biofilms were grown from freshly collected human saliva. The biofilms were exposed to 25 weight percent toothpaste supernatants. A mouthrinse containing chlorhexidine and a buffer were used as positive- and negative-controls, respectively. Antibacterial efficacy was concluded from acute killing, bacterial removal, prevention of bacterial redeposition, and continued killing during redeposition. The study found that the herbal- and chitosan-based supernatants showed immediate killing of oral biofilm bacteria, comparable with chlorhexidine. Exposure of a biofilm to these supernatants or chlorhexidine yielded ongoing killing of biofilm bacteria after exposure during redeposition of bacteria to a matured 16-hour biofilm, but not to a much thinner initial biofilm formed only by 2 hour’s adhesion. This suggests that thicker, more matured biofilms can absorb and release oral antimicrobials.
The study concludes that supernatants based on herbal- and chitosan-based toothpastes have comparable immediate and ongoing antibacterial efficacies as chlorhexidine. Natural antimicrobials and chlorhexidine absorb in oral biofilms, which contributes to their substantive action.
The entire article, entitled "Efficacy of Natural Antimicrobials in Toothpaste Formulations Against Oral Biofilms in Vitro" is available in the March issue of the Journal of Dentistry as well as online at the Web site jodjournal.com. -
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