Treatment analysis of anterior subgingival crown-root fracture with traction of orthodontic treatment and repairing

Objective To investigate the subgingival crown-root fracture to the anterior joint repair orthodontic treatment of clinical efficacy.Methods To perfect teeth after root canal therapy root canal cements in the length of the root length is less than 1/2 0.5mm stainless steel wire,the surface of healthy teeth on both sides stick brackets,stainless steel arch wire square wire decide plus towing hooks,chain rubber band traction.After the root traction in place in March,six months underwent post crown.Results 36 teeth were treated in 2005 to 2009,of which one failed,the other therapeutic effect.Conclusion For the first to subgingival crown-root fracture cases,the use of orthodontic traction after the crown after ways to increase the retention opportunities,access to satisfactory functional and aesthetic results.