Human histologic evaluation of a bone graft combined with GTR in the treatment of osseous dehiscence defects: A case report

There are many possible goals and outcomes of periodontal surgical therapy, but the ultimate goal is regeneration. Since the definition of periodontal regeneration is histologic, it is difficult to document. The purpose of th is study was to evaluate a technique that combined a bone graft and guided tissue regeneration (GTR) to see ii regeneration occurred. Four teeth with dehiscence-type osseous defects that were scheduled for extraction were tre ated with bone grafts and GIR. During the surgical procedure, a notch was p laced into the root at the apical extent of ri ie calculus. The teeth were extracted with conservative block sections 7 months after the treatment. Th ey were processed, sectioned, stained, and evaluated histologically. The re sults revealed that regeneration did not occur in any of the teeth treated, In 2 of the teeth new connective tissue attachment was formed. in these 2 teeth cementum could be seen in the notch with connective tissue fibers ins erting into the cementum. in one of the teeth the junctional epithelium ext ended apical to the notch, while in 3 cases the epithelium stopped at or co ronal to the notch. In this case report, no regeneration could be documente d, but new attachment could be seen in 2 of the 4 teeth treated.