[Research progress of flared roots reinforced with resins and methods of evaluation]

With the development of root canal therapy, and prosthodontic materials, techniques as well, the restoration of residual roots has made great progress. However, the restoration of endodontically treated teeth with excessive loss of mineralized tissues still presents a challenge to dentists. Prognosis is comparatively poor if flared roots are restored by conventional methods. Many scholars have devoted themselves to the researches on how to reinforce the compromised root to increase the fracture resistance. The newly research progress of methods, results and evaluations for flared roots reinforcement were reviewed in this paper.