A COMPARATIVE EVALUATION OF COMPRESSION RESISTANCE OF COMMERCIALLY AVAILABLE INTEROCCLUSAL RECORDING MATERIALS: AN IN - VITRO STUDY

*Dr. Samarth Kumar Agarwal, Dr. Mukesh Singhal, Dr. Swatantra Agarwal, Dr. Romil Singhal, Dr. Amit Kalra and Dr. Kumari Kalpana

ABSTRACT

Interocclusal recording materials are used to register jaw relationships for mounting dental casts on an articulator. The resistance of these materials to compressive forces is critical, because any deformation during the recording or mounting process would result in, inaccurate articulation of casts and faulty fabrication of restorations. Different commercially available interocclusal recording materials were used in the study viz Aluwax, jetbite, Ramitec and Aluwax plus zinc oxide eugenol combination. Twenty samples each were prepared on verticulator at 2mm, 4mm and 6mm thickness. The compressive resistance was measured on universal testing machine when a constant load of 25N was applied for 1 minute after 24 hours of fabrication of samples. Results showed statistically significant difference of compression resistance in all groups at various thickness as p value <0.001. Samples of 2mm thick of all tested materials showed least compression. Metalized wax showed maximum compression resistance of all tested interocclusal recording materials. It was concluded that all interocclusal recording materials were compressed at various thicknesses, but degree of compressibility is different.

Keywords: Interocclusal recording material, compressive resistance, Metalized wax, Polyether, Polyvinylsiloxane, Zinc oxide eugenol.