In Vitro Evaluation of Time-Dependent Linear Dimensional Changes in Four Interocclusal Recording Materials

Among the materials tested, polyvinylsiloxane demonstrated the highest dimensional accuracy and stability. Accuracy was markedly improved when casts were mounted shortly after recording, highlighting the importance of minimizing storage time. Additionally, all materials exhibited a significant correlation between weight changes and dimensional alterations, suggesting that shrinkage or expansion can impact clinical reliability. Therefore, selecting appropriate recording materials and ensuring timely mounting of the cast are crucial for achieving optimal prosthodontic results.