a maxillary alginate impression routinely requires

1 The conventional technique of border molding using green stick modeling compound taught at the University of Washington before 1976 required a minimum of “24” insertions of the trays, eight for the maxillary and sixteen for the mandibular, provided the proper extensions were secured on the first insertion for each section.

The original material used for border molding was modeling compound which was introduced in 1907 by the Green Brothers. It is not uncommon to notice a practitioner or a dental student struggling to achieve retention in complete removable dentures. It is difficult to manipulate and handle this material.Ĭomplete denture prosthodontics remains one of the most demanding endeavors for any dental practitioner.

The traditional technique being taught in most Pakistani dental institutes of using thermoplastic green stick modeling compound for border molding to achieve peripheral border seal remains a demanding and in most instances “messy” job. Peripheral Moulding, Special denture, Complete denture, Thermoplastic compound.Īchieving retention in removable complete dentures has been a traditional problem, particularly in lower complete dentures. It is not the authors` intention to criticize the current methods of teaching in our dental schools but to encourage the readers to broaden their vision of the often complex but fascinating craft of complete denture construction. In this paper, a critical evaluation of the various materials and techniques used for border moulding of the special tray is given. This will enable them to decide on their own which technique to employ and master. Students may now be introduced to the various techniques and materials for border moulding along with the concept behind the procedure. Therefore, the use of thermoplastic compound has been examined and recommended to be kept to a minimum due to the availability of simpler techniques and easy to handle and accurate materials. With the use of green stick compound for border moulding it is possible to record the border details accurately but it tends to be messy and it is difficult to determine the consistency and proper temperature. Border molding is done to record the peripheral margins of the denture and to ensure their extension to the sulcus reflection and in the post dam area in the maxilla.

A maxillary alginate impression routinely requires