If conventional endodontic treatment can not be made, Endodontists in Indiana offer surgical procedure to seal the canal of the tooth from the side of the root. This procedure is called retrograde sealing the root canal. In most cases this procedure is recommended when traditional access to the root canal is closed by inlays, crowns, filling material at the previously endodontic treatment. This operation is carried out under a microscope as root canal at the apex of the tooth is very narrow and it is difficult to seal such small hole. Microsurgical approach allows endodontist not only to seal the root canal, the diameter of which is less than 1 mm, but also reduce postoperative pain and discomfort. Tooth after retrograde sealing will serve for many years.