Maria Bolat, Carina Balcoș, Florinel Cosmin Bida, Dana Gabriela Budală
Aim of the study The research aimed to evaluate the conventional method to establish the posterior marginal closure of the upper dentures. Material and methods. For the present study, 8 complete edentulous patients were selected for specialized treatment. The technique for making dentures was the classic one. On the engraved cast, the posterior dam of the upper denture was performed. The final dentures were thus made on the engraved cast and the marginal closure was then tested. Results and discussions. When analyzing the clinical appearance and color of the post dam area, no change was found in 6 of the 8 patients studied. In one case, a depression was observed in two of the 8 cases, 30 days after wearing the dentures. It is accepted that the posterior edge of the upper denture must end at the posterior vibrating line. Pressure within physiological limits can be exerted in the area between the anterior and posterior vibration lines to help maintain the dentures.
Conclusions. It follows from the present investigation that the arbitrary method of engraving the functional cast used to establish the posterior dam area is an acceptable method