Filippo Surano believes that the noblewoman in Leonard da Vinci's portrait suffered from bruxism, an unconscious habit o费里坡·苏然诺坚信这位达芬奇笔下的贵夫人遭受着磨牙症的困扰——一种在睡眠状态下或神经紧张时发作的不由自主的磨牙行为。