Authors: Armand Alushi, Neada Hysenaj, Luela Mamaj

DOI: To be acquired

Keywords: provisional materials, flexural strength, specimens.

ABSTRACT

Introduction: Flexural strength is important to define the strength of prosthetic construction, especially in a long term one.
Aim: The comparison of flexural strength between two restorative provisional materials: polymethyl methacrylate and urethane dimethacrylate.
Materials and methods: In this study were included 20 specimens, 10 for each group. These specimens were stored in artificial saliva for 7 days, then they were rinsed and dried. Flexural strength were calculated by using 3 point test in the universal machine. The data were analyzed with t-test. Results. The average value of flexural strength of specimens made of polymethyl methacrylate (134,4 MPa) was higher than the flexural strength of specimens made of urethane dimethacrylate (107,5 Mpa).
Conclusion: Inside the limits of this study we could conclude: the flexural strength of Polymethyl Methacrilate is higher that the flexural strength of urethane dimethacrylate. Polymethyl methacrylate can be used as a better provisional restorative for a long period of time, for long span prostheses or in patients with parafunctional habits.