Author :
Neha Bhadana,Devendra Chopra,Arvind Tripathi,Debasis Tripathy
Volume :
3
Issue :
2
Abstract :
Abstract Background: Accurate interocclusal records are essential for the successful fabrication of prosthodontic restorations. This study compares the dimensional stability and compressive resistance of three common interocclusal recording materials to determine their suitability for various clinical applications. Methods: An in vitro study was conducted at the Department of Prosthodontics, Saraswati Dental College & Hospital, Lucknow, in collaboration with the Central Institute for Plastics Engineering and Technology. Thirty samples (ten each of Polyvinylsiloxane, Zinc Oxide Eugenol paste, and Alu Wax) were evaluated for dimensional stability at 1, 24, and 48 hours, and for compressive resistance at 100 gm² and 1000 gm² using a Universal Testing Machine. Results: Polyvinylsiloxane exhibited superior dimensional stability at all tested intervals compared to Zinc Oxide Eugenol paste and Alu Wax. In terms of compressive resistance, Alu Wax demonstrated the highest resistance at both tested loads, significantly outperforming the other materials. Zinc Oxide Eugenol paste showed the least favorable results in both tests. Conclusion: The study highlights the importance of material selection in fixed prosthodontics. Polyvinylsiloxane, with its excellent dimensional stability, is ideal for situations requiring precise registration over extended periods. Alu Wax, due to its high compressive resistance, may be preferable under conditions of high mechanical stress. The findings suggest that traditional materials like Zinc Oxide Eugenol may not provide the same level of reliability as newer, more advanced materials.