The problems related to the loss of natural teeth are known to every dentist. The changes occurring after the teeth loss are continuous and progressive. The progressive resorption of the alveolar bone and the osteal base as well as the loss of proprioceptive sensations are the most severe consequences. The preservation of the remaining teeth and oral tissues should be the main goal of the prosthetic treatment. This particularly applies to the teeth of the lower jaws. Frequently, it is possible to preserve also the teeth with already affected periodontal tissue. In case of the unfavourable relationship between the clinical crown and the root-canal the crown must be shortened. The method of radeotomy is rather successfully applied for this purpose. For the retention of the partial and total prosthesis the author used the preserved teeth or the roots of individual teeth. After a long-term positive experience the author suggests the above mentioned prosthetic treatment as the alternative to frequent extractions of natural teeth.