This therapy is undertaken to clean and debride the teeth and roots above and below the gum. Probing deeper than 3mm's is called a Periodontal Pocket. Bacteria fill this pocket and deposits from these bacteria, called tartar or calculus form on the roots.
Scaling and root planing clean these pockets and roots and maybe completed without the need for anesthesia. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.