1. The microscopic appearance of the periapical tissue in cases classified as “uncertain” or “unsuccessful” after apicoectomy;Arwill;Odontol Revy,1974
2. A histopathologic, histobacteriologic, and radiographic study of periapical endodontic surgical specimens;Block;Oral Surg,1976
3. Retreatment of endodontic fillings;Bergenholtz;Scand J Dent Res,1979
4. Influence of apical overinstrumentation and overfilling on retreated root canals;Bergenholtz;J Endodon,1979
5. Healing of periapical lesions of pulpless teeth after endodontic treatment with controlled asepsis;Bystrom;Endodon Dent Traumatol,1987