When the decay goes so deep, that the infection reaches the pulp, then an almost unbearable, the so-called pulpitic pain appears, usually at night, because of the tension of the gases derives from the inflammation of veins and nerves in it. Without a doubt, all of us have various experiences related to root treatment, based on either personal or our acquaintances' stories. Contrary to every rumour we must know, that root treatment, or endodontic intervention, can be executed without pain, and what is more important, it serves tooth-keeping. Considering that instead of removing and replacing a tooth, we can keep our own teeth with this kind of intervention, it is reasonable to choose root treatment. Root treatment causes less unpleasantness than tooth substitution.

During root treatment, after thorough anaesthetisation the dentist removes the inflamed tooth-nerves and veins, and pain also considerably decreases. After that on some occasion dentine is treated with antiseptic and medicines, and when the tooth becomes symptom free, root-filling can be done. The latter can be executed without anaesthetic. After successful root-filling the tooth must be cover-filled, usually it is worth protecting it with a crown.