Effect of restoration method on fracture resistance of endodontically treated maxillary premolars

摘要: Purpose The aim of the present study was to compare fracture resistance endodontically treated maxillary premolars with mesio-occlusodistal (MOD) cavities restored using various restorative materials and luting agents. Materials methods Eighty extracted human satisfying certain predetermined criteria were subjected seven different restoration (10 per method). After endodontic treatment, an MOD cavity prepared in each specimen, carried out by one following methods: group 1 = control (intact premolars); groups 2 3 a photo-cure resin composite without bonding, respectively; 4 5 cast-metal inlay zinc phosphate adhesive cements, 6 7 onlay 8 hybrid onlay. A test conducted determine mode specimen. Results Fracture greatest for teeth cemented cement, but those fractures that did occur generally unrestorable. also high. significantly lower, majority these restorable. Conclusion Endodontically could be successfully cast restorations luted their failure often unfavorable.