IF any of you have visited a dentist, you would have been advised to brush twice or thrice a day by most of them.
We aren't being overzealous on this, you know!!!
To understand why u should brush twice daily, you have to understand how cavities occur
Saliva plays a major role in clearing away most of the food debris on the teeth after a meal. This works fine for morning and noons. But after dinner, we go to sleep and saliva secretion is reduced when we sleep. Some of u may have realised this already by waking up with a parched throat and a dry mouth. So when , the major source of cleansing is gone, the debris accumulate on the tooth surface. This provides ready food for bacteria to breakdown and produce acids which dissolve the tooth structure producing cavities.
Hence brushing at night is crucial to cleanse the oral cavity.
Aren't you wondering then why should u brush in the morning???!!!!
Well.. Most toothpastes have materials in them like fluoride, which PREVENT the formation of cavities. Brushing also freshens your breath. Some even prevent the accumulation of tartar and thus protect you gums.
No more laziness then.. Take up your brush and make your teeth sparkle. ( Twice a day ;))
Cheers! Keep smiling..., healthy!!!