Prevention of Streptococcus mutans regrowth

The normal flora on the teeth includes Streptococcus mutans which causes tooth decay. Treatment with chlorhexidene will kill all the flora. After chlorhexidene the oral bacteria recolonize except for Stretococcus mutans which is specifically inhibited by the antibody (Y-shaped molecule). After antibody treatment the space originally occupied by Streptococcus mutans is filled by other oral bacteria.