Since the mineral fluoride has been shown to reduce the risk of tooth decay, it is often applied to the teeth of children as a gel, solution, or varnish at the dental office.
بعد ذلك تلمَّع الاسنان لإعاقة تراكم اللويحات وإزالة اللطخات التي تشوِّه ابتسامتك .‏