A PHOTOELASTIMETRIC ANALYSIS OF STRESS-INDUCED BY ROOT-END RESECTION

The aim of this study was to place into perspective some factors that played an important role in the healing of periapical lesions after su rgical endodontic procedures, Root-ends were sectioned at different an gulations on models and analyzed by photoelastimetry, Results showed t hat a section of the root-end through a plane perpendicular to the lon g axis of the tooth offers a better distribution of the stresses exert ed on the apical region than the use of an inclined plane. The biologi cal implications of these results have led the authors to propose a pl an of resection that is perpendicular to the long axis of the tooth in stead of the inclined plane commonly used.