Clinical Application of Conservaive Prosthetics of Molar Residual Roots and Crowns by Separating Roots and Crowns

Objective To explore the clinical effects of split-root conservation and restoration for mandibular molar crown and root.Methods 35 molar residual roots and crowns, after a complete root canal treatment and therapy,using split-root method for Conservation and Restoration. After 1～3 year follow-up, with subjective evaluation,gums bleeding indications and evaluation of the success rate of clinical results.Results The success rate is 87.9% for 35 molar residual roots and crowns,patients'gum was gradually recovered.Subjective evaluation is also satisfactory. Teeth can normal function.On the single-crown and multi-crown area,there is no significant difference.Conclusion Rational design and repair after repair maintenance,can improve the preservation rate under the residual molar crown.