Analysis Three-Dimensional Photoelastic Strese on The Endodnntic-Endosseous Implants / 昆明医科大学学报

ABSTRACT

The smooth-surface columnar,tepered and screw-shafed eddodontic endosseous stabilizers were separately placed into the maxillary central incisors'root canal and through apical foramen into alveolar bone.The stress distribution in the apical region and the region close to the tip of the implants in the alveolar bone of tooth models were studied by means of three-dimensional photoelastic technique.The screw-shafted implants were inserted into the mandibular canine and the influence of the implanting embedment depth lextruded out off the apical foramen 5mm,7mm(Omm) to the stress distribution were also studied.The results of the experimental investigation showed that the retentive function and the stress distribution of screw-shafted implants were better than that of others;the implanting depth should be se- lected within 5.8-8.6mm.