Possibility of increase of dental calculus formation by daily meals and food ingredients

采用pH滴定法研究了四种不同膳食对体外钙化的影响。煮米饭会增加钙化，而烤面包会减少钙化。1-3餐(如土豆)和西餐4(如黄油)中的一些菜肴和食物配料会增加钙化。然而，由于口腔中的唾液抑制了它们的促进作用，因此我们认为日常饮食可能对牙结石的形成有抑制作用。

The effects of four kinds of daily meals on the in vitro calcification were studied using the pH drop method. Boiled rice increased the calcification, while toasted bread decreased it. A few dishes and food ingredients from meal 1-3 (e.g.potato) and Western-type meal 4 (e.g.butter) increased the calcification. However, since saliva in oral cavity inhibits their promoting effect, it is suggested that our daily meals may be inhibitory on the dental calculus formation.