Clinical studies show that titanium exposed to a light
source has an excellent bacterical capacity against
Streptococcus mutans., a micro-organism found in the
mouth that is particularly related to dental caries.
(Onada et al. photocatalytic bactericidal effect
of powdered TiO2 on Streptococcus mutans bateria., Denki
Kagaku, 56, 1108-1109, 1988).
In Japan a clinical report on titanium toothbrushes
found that dental plaque removal was significant during
the early phase of plaque formation and concluded that
the brush was effective in the control of plaque.
(Kusonoki et al. A study on the effect of the solar
energy toothbrush on the control of dental plaque. J
Osaka Odont. Soc., 49; 550-559, 1986).
Another Japanese study concluded that improvements
in gingivitis and oral hygiene can be expected by using
a toothbrush equipped with a titanium semiconductor.
(Niwa et al. Clinical study on the control of dental
plaque using a photo energy conversion toothbrush equipped
with a TiO2 semiconductor. Shigaku Vol. 77 No. 2 August
A clinical study conducted at a Canadian College of
Dentistry indicated that removal of plaque - from buccal
surfaces especially was more apparent using the
ionic brush than it was using the control brush without
(Hoover et al. Clinical evaluation of a light energy
conversion toothbrush. J. Clin. Periodontol. 19: 434-436
For a more complete review of research please refer
to PDF files linked here.