Triclosan-loaded tooth-binding micelles for prevention and treatment of dental biofilm.
OBJECTIVE
To develop tooth-binding micelle formulations of triclosan for the prevention and treatment of dental caries.


METHODS
Alendronate (ALN) was conjugated to the chain termini of different Pluronic copolymers to confer tooth-binding ability to the micelles. Using 3 different formulation methods, Pluronics and ALN-modified Pluronics were used to prepare triclosan-loaded tooth-binding micelles. The formulation parameters were optimized for triclosan solubility, particle size, hydroxyapatite (HA) binding capability and in vitro drug release profile. The optimized formulation was tested on an in vitro biofilm model.


RESULTS
Direct dissolution was selected as the best formulation method. Triclosan-loaded tooth-binding micelles were able to inhibit initial biofilm growth of Streptococcus mutans UA159 by 6-log CFU/HA disc compared to the untreated control. These tooth-binding micelles were also able to reduce the viability of preformed biofilm by 4-log CFU/HA disc compared to the untreated control.


CONCLUSIONS
Triclosan-loaded tooth-binding micelle formulations have been successfully developed and optimized in this study. These micelle formulations demonstrated promising anti-cariogenic bacteria capabilities and may find applications in the prevention and treatment of dental caries.
Chen
Fu
F
Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198-6025, USA.
Rice
Kelly C
KC
Liu
Xin-Ming
XM
Reinhardt
Richard A
RA
Bayles
Kenneth W
KW
Wang
Dong
D
D018441:Biofilms; D006801:Humans; D008823:Micelles; D012995:Solubility; D014260:Triclosan / Q000008:administration & dosage* / Q000145:classification
D008823:Micelles; D014260:Triclosan
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