Effects of soybean milk, chitosan, and anti-Streptococcus mutans IgY in malnourished rats' dental biofilm and the IgY persistency in saliva

Abstract

Objective: This study aims to evaluate the effect of soybean milk containing a combination of anti-Streptococcus mutans IgY and chitosan to the colonization of S. mutans in the saliva and to the IgY persistency in the saliva. Materials and Methods: Experimental malnourished Sprague-Dawley rats were fed with soybean milk that is enriched with anti-S. mutans IgY and chitosan. After 15 days of feeding, we evaluated the S. mutans in dental biofilm, in addition to the persistency level of anti-S. mutans IgY. Results: The rats that received soybean milk supplemented with anti-S. mutans IgY had the lowest number of S. mutans colonies (p < 0.05). Anti-S. mutans IgY was detected in saliva after 15 days of feeding. Conclusions: Soybean milk supplemented with anti-S. mutans IgY and chitosan could significantly reduce S. mutans biofilm, and the supplemented anti-S. mutans IgY persisted in these rats' saliva following the feeding period.