和爱人深情一吻,除了让人感到身心愉悦之外,更有助于保护口腔健康。这一学界的新发现让恋人在情人节接吻又多了一层含义。“接吻是保护口腔健康最天然的方式,”美国大众牙医学会发言人表示, Intimate kiss with lover, in addition to make people feel pleasure, but also help to protect oral health. The new discovery of this academic circle allows lovers to kiss another layer of meaning on Valentine’s Day. “Kissing is the most natural way to protect your oral health,” said a spokesman for the American Society of General Dentists.