“Split Cast Mounting: Review and New Technique”

Abstract

For the fabrication of a prosthesis, the Prosthodontist meticulously performs all the steps. The laboratory technician then make every effort/strives to perform the remaining lab procedures. However when the processed dentures are remounted on the articulator, some changes are seen. These changes may be divided into two categories: Pre-insertion and post-insertion changes, which deal with the physical properties of the materials involved (Parker, J Prosthet Dent 31:335-342, 1974). Split cast mounting is the method of mounting casts on the articulator. It is essentially a maxillary cast constructed in two parts with a horizontal division. The procedure allows for the verification of the accuracy of the initial mounting and the ease of removal and replacement of the cast. This provides a precise means of correcting the changes in occlusion occurring as a result of the processing technique (Nogueira et al., J Prosthet Dent 91:386-388, 2004). Instability of the split mounting has always been a problem to the Prosthodontist thereby limiting its use. There are various materials mentioned in the literature. The new technique by using Dowel pins and twill thread is very easy, cheaper and simple way to stabilize the split mounting. It is useful and easy in day to day laboratory procedures. The article presents different methods of split cast mounting and the new procedure using easily available materials in prosthetic laboratory.

Survival of Prosthodontic Restorations Luted with Resin-Based versus Composite-Based Cements: Retrospective Cohort Study

“…The indirect process of fabrication offers better access for creating natural occlusal and interproximal design. While the degree of conversion influences fracture resistance and wear resistance, the time for proper degree of conversion is not patient-dependent during indirect fabrication [ 4 , 5 ].…”

Evaluation of split‐cast techniques for remounting casts on a dental articulator: A survey and an in vitro study

“…8 Scattered descriptive reports list the use of different materials such as plaster, sticky wax, masking tape, elastic adhesive bandage, custommade mounting jig using alginate or putty index, tin foil and bite registration material, dowel pins with plastic or metal sleeves and screws, and washers to aid in remounting casts on dental articulators. [9][10][11][12][13] Nogueira et al 1 reported that the standard index-groove is the easiest and most popular technique. According to Scandrett and Hanson, 10 accurate remounting is fundamental for the fabrication of removable and fixed prostheses and, therefore, should be an integral part of the dental curriculum.…”

“…Although clinical removal is considered an important step in complete denture fabrication, an ideal split-cast technique has not been described. The paucity of literature comparing the performance and accuracy of previously reported split-cast techniques [9][10][11][12][13] for remounting warrants further investigation, particularly to update dental education on the technique providing the best outcomes.…”

“…The concept of split‐cast mounting was first introduced by Needles in 1923 to facilitate the remounting of the master casts after separation for the correction of occlusal errors 8 . Scattered descriptive reports list the use of different materials such as plaster, sticky wax, masking tape, elastic adhesive bandage, custom‐made mounting jig using alginate or putty index, tin foil and bite registration material, dowel pins with plastic or metal sleeves and screws, and washers to aid in remounting casts on dental articulators 9–13 . Nogueira et al 1 reported that the standard index‐groove is the easiest and most popular technique.…”

“…Although clinical removal is considered an important step in complete denture fabrication, an ideal split‐cast technique has not been described. The paucity of literature comparing the performance and accuracy of previously reported split‐cast techniques 9–13 for remounting warrants further investigation, particularly to update dental education on the technique providing the best outcomes. Therefore, this study aimed to conduct a survey of dental school students and faculty members on their opinions, attitudes and adoption of different split‐cast techniques for the removal of complete dentures.…”