Stresses induced by endodontic stabilizers

The force transmission of tapered, smooth-sided and parallel, threaded-sided single-crystal sapphire endodontic stabilizers was studied and the conclusions were: The stabilizer designs provided substantial fixation of the periodontically compromised model teeth and reduced tooth mobility from 3 to 0. Both stabilizer designs dramatically improved the stress distribution in the supporting structures caused by applied loads. The most distinct and highest intensity of stress concentrations were observed in the models immediately after insertion of the stabilizer. Stresses were reduced with the presence of the fibrous tissue simulation. The most favorable stress distributions were demonstrated, irrespective of configuration, in the models representing full bone-stabilizer encapsulation.