1. Root amputation and tooth hemisection;Basaraba;Dent Clin N Am,1969
2. Endodontic therapy;Weine,1982
3. Furcation morphology relative to periodontal treatment. Furcation root surface anatomy;Bower;J Periodontol,1979
4. Root morphology-clinical significance in pathogenesis and treatment of periodontal disease;Gher;JADA,1980
5. Crown and bridge prosthesis;Tylman,1940