Biodegradable tooth-binding micelles inhibit Streptococcus mutans biofilm growth

This research was performed under the objective to develop tooth-binding micelles(TBM) using peptide based biodegradable tooth-binding moieties that can effectively bind to the tooth surface to provide prolonged drug retention in the oral cavity, but can also safely detach from the tooth by gradual degradation of the peptide. Di-phosphoserine, tetra-phosphoserine and hexa-phosphoserine peptides were synthesized using a standard solid phase peptide synthesis method. These oligopeptides were conjugated to Pluronic P123 copolymer using a click reaction.

The tooth-binding micelle was prepared by self-assembly of the modified Pluronics with the antimicrobial agent triclosan. The binding kinetics of TBMs on hydroxyapatite (HA) particles was evaluated using a UV spectrophotometer. For in vitro biofilm prevention studies, HA discs were pretreated with different TBM formulations prior to inoculation with S. mutans UA159, and subsequent biofilm formation was assessed. Biofilm growth was measured by calculating the colony forming units (CFU) recovered per disc. Specific differences between the log-CFU/biofilm of each experimental group were analyzed using the Student t-test. A p-value of
The binding kinetics of TBMs on HA particles were found to be fast (
This work was supported in part by NIH grants AR053325 (DW) and AI038901 (KWB).
This is a summary of abstract #3027 “Biodegradable Tooth-binding Micelles Inhibit Streptococcus mutans Biofilm Growth,” to be presented by F. Cheni on Saturday, 10:45 a.m. – 12:15 p.m. in room 30AB of the San Diego Convention Center.

About the International Association for Dental Research

The International Association for Dental Research (IADR) is a nonprofit organization with more than 12,000 individual members worldwide, dedicated to: (1) advancing research and increasing knowledge to improve oral health, (2) supporting the oral health research community, and (3) facilitating the communication and application of research findings for the improvement of oral health worldwide.