Today, I met a person with lots and lots of calculus deposits in his mouth. But as he was unaware about his oral condition, I showed him what he has in his mouth but he quickly answered "I brush thrice a day and even if this calculus is present in my mouth, what harm will it do to me? Why should I get it removed?" 

So guys here is the answer to his question:

We might brush twice a day or maybe thrice a day but still, there are some areas where our brush doesn't reach properly. So these areas start getting soft food accumulations (food debris). And over a period of time, this soft food debris becomes hard and is known as Calculus. So if not scaled or cleaned with time, this calculus starts pushing the gums downwards. In this way, your gums start receding at a faster rate. And once the gums recede, the root portion of the tooth which was previously covered with the gum gets exposed causing sensitivity in that particular tooth. Also, if the calculus is still not scaled, the gums will recede further, thereby weakening the support of the tooth and hence causing mobility of that particular tooth. So, Tooth SENSITIVITY and Tooth MOBILITY are the two main problems associated with calculus which go unnoticed because of the fact that we brush every day! Along with these two, the problems like HALITOSIS (bad breath), BLEEDING GUMS, SWOLLEN GUMS, are also associated with calculus and teeth deposits. So please get yourself checked for calculus after every 6 months

Scaling doesn't cause any damage to your teeth, but it is done to prevent any further damage to the teeth.