Bacterial growth on hollow-head toothbrushes
More bacterial growth on hollow-head toothbrushes
Solid-head power toothbrushes retain less bacteria compared to hollow-head toothbrushes.
According to researchers at The University of Texas Health Science Center at Houston (UTHealth) School of Dentistry, Solid-head power toothbrushes retain less bacteria compared to hollow-head toothbrushes, according to new research.
University of Texas Health Science Center published the study in the Journal of Dental Hygiene, August issue. Lead author and professor at the UTHealth School of Dentistry, Donna Warren Morris, R.D.H., M.Ed., notes that study result shows microbial counts were lower in the solid-head toothbrushes than in the two hollow-head toothbrushes in 9 out of 10 comparisons.
“Toothbrushes can transmit microorganisms that cause disease and infections. A solid-head toothbrush allows for less growth of bacteria and bristles should be soft and made of nylon,“ Morris said. “It is also important to disinfect and to let your toothbrush dry between uses. Some power toothbrushes now include an ultraviolet system or you can soak the head in mouthwash for 20 minutes.”
This study was conducted over a three-week period where participants brushed twice everyday while randomly one of three assigned a power toothbrushes Participants continued their flossing routine throughout the study and used non-antimicrobial toothpaste, however they refrained from using mouthwash or other dental products.
“The packaging on most power toothbrushes won’t distinguish between a hollow-head and a solid-head design,“ Morris said. “The best way to identify a solid-head design is through the connection to the body of the power toothbrush. Naturally, there will be some space to connect the two parts but a significant portion will be solid, up to the bristles or brush head.”
During the study the brush heads were exposed to five categories of oral microorganisms: anaerobes and facultative microorganisms, yeast and mold, oral streptococci and oral enterococci anaerobes, Porphyromonas gingivalis and Fusobacterium species.
The article also states that there is no present or published study that has demonstrated that bacterial growth on toothbrushes can lead to systematic health effects, but as Morris stated, several microorganisms have been associated with systemic diseases.
“We do know and there are studies that have linked Fusobacterium to colorectal cancer. Some of these other bacteria have been linked with cardiovascular disease,“ Morris said. “There is a high association with gum disease and cardiovascular disease. Researchers have been able to culture the same bacteria around the heart that causes gum disease. “
This study was funded in part by the Advanced Response Corporation. Other researchers include Millicent Goldschmidt, Ph.D., M.S., professor emerita at the UTHealth School of Dentistry; Harris Keene, D.D.S., retired professor from The University of Texas M.D. Anderson Cancer Center; and Stanley Cron, M.S.P.H., research instructor at the UTHealth School of Nursing.