Root canal treatment constitutes of removal of entire nerve pulp and blood vessels from the tooth, therefore it will stop reacting to hot or cold things. Such treatment results in a weaker tooth as nutrients stop reaching it as in a healthy one. It is important to remember that tooth decay can still affect teeth after root canal treatment. Such tooth will not hurt despite large cavities. After root canal treatment, the tooth is an empty shell so only enforced filling guarantees that it will remain healthy afterwards. Applying standard tooth filling after root canal treatment bears a huge risk of it breaking. Even if root canal treatment is performed incorrectly it will not hurt so it will not give early warning signs. Pain appears only when inflammation under the tooth is spreading. X-ray image is the only way to verify if inflammation has started and whether root canal was filled correctly. Repeated root canal is a much more complicated treatment than the first one. Often the dentist has to correct what the previous one has failed to do. Usually, removing the root filling inserted earlier is very complicated. It bears the risk of taking the wrong approach again. Therefore it is crucial that magnification is used to perform the treatment. Only that enables careful and well performed treatment that will not need to be corrected. At Skydental we always perform root canal treatment using either magnifiers for microscopes. The procedure is done using cofferdam and root canals are filled using the most suitable thermic method.