Abstract:

BACKGROUND: Cast metal posts with big elastic modulus and poor biocompatibility can result in apical root fractures that are difficult to remove during residual molar crown repairment. 
OBJECTIVE: To evaluate the therapeutic effects of multi-fiber posts on the restoration of the molar residual root and crown.
METHODS: A total of 26 patients with 31 molars were included. After satisfactory root canal therapy, the teeth were repaired using two or three glass fiber posts and zirconia-ceramic crowns.
RESULTS AND CONCLUSION: During 12-24 months of clinical follow-up, one had food impaction for bad adjacency, one had abscission of all-ceramic crown, one had porcelain collapse caused by hard food biting. No loosening, fracture and gap existed among fiber post, composite resin core, dentine and crown. No dislodgment or fracture of posts or roots was observed in restorations. Multi-fiber post and cores and all-ceramic crown are reliable and ideal materials in the restorations of molar residual root and crown.