Comparative evaluation of the effect of three different inter-occlusal recording materials on horizontal condylar guidance values in two different semi adjustable articulators with reference to condylar guidance values obtained by lateral cephalometric

Background: Many techniques have been discussed to record horizontal condylar inclination and transfer it to an articulator, but the most popular and commonly used technique to determine horizontal condylar inclination is use of inter-occlusal protrusive records. Considering, this study was planned to evaluate the effect of three different inter-occlusal recording materials on horizontal condylar guidance values in two different semi adjustable articulators with reference to condylar guidance values obtained by lateral cephalometric tracing. Materials and Methodology: For the study, 15 patients of age 18-24 years were selected with full complement of dentition. (n=15). Maxillary and mandibular impression were made ans two pairs of cast were made. Mounting was done for respective artiulators. Three protrusive inter-occlusal records were made with each material. The semi-adjustable articulators were programmed to obtain the readings of horizontal condylar inclination of both the right and left side. The cephalograms were traced and the horizontal condylar guidance values were obtained. Results: The results of the studies showed that, Arcon articulators have better level of accuracy of recording HCG than that of non-arcon articulators. Polyvinyl siloxane and polyether material exhibit better level of accuracy of recording HCG in both arcon and non arcon articulators. Alu wax is not recommended material with either of the articulators.