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Hua Xi Kou Qiang Yi Xue Za Zhi. 2003 Oct;21(5):339-41.

[The study on specific anti-Streptococcus mutans IgY against dental caries in rats].

[Article in Chinese]

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Department of Endodontics, College of Stomatology, Wuhan University, Wuhan 430070, China.



To investigate the effect of specific anti-streptococcus mutans IgY against streptococcus mutans on dental caries development in rats.


35 wistar rats were divided into 5 groups: group A received IgY gargle; group B received IgY lyophilized powder; group C received sterilized water as control; group D and E received egg yolk food with or without specific IgY individually. They were all fed with caries-inducing diet 2000#. The number of caries scores was counted by the procedure of Keyes'.


There was a significant lower mean of caries scores in groups treated with IgY lyophilized powder and gargle. By treating with egg-yolk food contained specific IgY, the mean of caries scores decreased comparing with no treatment group.


Local passive immunization with specific anti-streptococcus mutans IgY may be an effective way to prevent the development of dental caries.

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