Look! No fillings

 作者:独孤鸭廷     |      日期:2019-03-06 08:02:02
By Sylvia Pagán Westphal in Boston TOOTHACHE and fillings could soon be a thing of the past. On both sides of the Atlantic, scientists are developing vaccines aimed at eliminating dental caries, one of the most common infectious diseases. The vaccines target the bacterium Streptococcus mutans, which damages teeth by secreting large amounts of lactic acid that erodes tooth enamel. The bug also makes a sticky substance that helps it cling to tooth surfaces, forming a furry layer called plaque. Martin Taubman,