Milton Hodosh

The totally self-supporting tooth replica polymer implant

Abstract Through gradual modification of the polymer composition and techniques, a self-supporting polymer implant has evolved and become a reality. Such implants have remained firm, with a healthy surrounding periodontium. Animal research with the use of these ingredients is continuing, since the long-sought-after self-supporting implant appears to have been successfully demonstrated in initial studies.

Potassium nitrate-zinc oxide eugenol temporary cement for provisional crowns to diminish postpreparation tooth pain

Pulpal injury commonly occurs with tooth preparation for complete fixed partial dentures. This can be documented by the substantial incidence of pain after tooth preparation. In this study, a 4% potassium nitrate-zinc oxide eugenol temporary cement was used to secure provisional crowns over recently prepared teeth and it significantly reduced the incidence and severity of pain after tooth preparation and impression taking.

Polymer-coated metal endodontic stabilizers

Abstract The ability to attach polymer coatings firmly to metals has resulted in the successful utilization of polymer-coated pins as endodontic stabilizers. The metal core provides strength, and the porous polymer provides for the attachment of connective tissue fibers to the implant. Greater longevity appears to result from the superiority of polymer-coated endodontic stabilizers over plain metal stabilizers. Polymer-coated metal pins can be used to strengthen teeth for fixed bridgework. For the endosseous implant to be successful, endodontic therapy must be carried out successfully and an apical seal must be effected.

Strength and biocompatibility of polymethacrylate-silica composite dental implant materials

A study was made of the strength properties of several composite dental implant materials composed of silica microspheres (6%, 24%, and 48% by weight) and PMMA. Prepared specimens of the materials were tested for compressive strength and tensile strength as a function of the curing methods. Compressive strength was reduced only slightly when the 6% mixture was used, as compared to 100% PMMA, but the compressive strengths of the 12% and 24% mixtures were reduced by approximately 30% when compared to 100% PMMA. The compressive strengths of these materials were reduced even further after curing in a microwave oven, and the tensile strengths decreased to a greater degree. The 6% mixture was reduced by 38% in the heat-cured specimens and was reduced by 27% in the microwave-cured specimens. Tooth replica implants were placed in baboons and the peri-implant tissues were studied histologically after 6 months. Inflammation was minimal. Peri-implant alveolar bone was viable and active, and both connective tissue and epithelial attachment to the implant surface was evident.