PROBLEM TO BE SOLVED: To provide a lactic acid bacteria effective in health enhancement, especially the prevention or therapy of intraoral diseases.SOLUTION: Inventors of this application searched for lactic acid bacteria effective in health enhancement, especially in the prevention or therapy of intraoral diseases, and found out that Weissella lactic acid bacteria, especially Weissella lactic acid bacteria W3 (deposition number NITE BP-01789) has an effect preventing or treating intraoral diseases.COPYRIGHT: (C)2016,JPO&INPIT