PURPOSE: A composition containing an Ixeris dentata NaKai extract as an active ingredient for suppressing oral bacteria is provided to suppress the growth of Streptococcus mutans, generation of organic acid, and formation of a Streptococcus mutans biofilm, thereby preventing, alleviating, and treating dental diseases without side effects. CONSTITUTION: A composition for suppressing oral bacteria contains an Ixeris dentata NaKai extract as an active ingredient. The extract suppresses the growth of Streptococcus mutans, generation of organic acid by Streptococcus mutans, and formation of a Streptococcus mutans biofilm. A preventive and therapeutic agent for dental diseases for suppressing oral bacteria contains the extract as an active ingredient. The preventive and therapeutic agent is formulated in a unit dose form by adding a pharmaceutically acceptable carrier, excipient, or diluents. The preventive and therapeutic agent is manufactured in the form selected from a group consisted of an oral cleanser, a toothpaste, an oral spray, and a denture cleaner.본 발명은 씀바귀, 구강 세균에 의한 치과질환에서, 스트렙토코커스 뮤탄스의 성장을 억제하고, 스트렙토코커스 뮤탄스에 의한 유기산 생성을 억제하며 또한 스트렙토코커스 뮤탄스 바이오필름 생성을 억제함으로써, 치과질환을 예방, 개선 및 치료하기 위한 조성물에 관한 것이다.본 발명인 치과질환의 예방, 개선 및 치료를 위한 조성물은 씀바귀 추출물을 유효성분으로 포함함에 기술적 특징이 있다.
