Polymethylmethacrylate (PMMA) has been used as a model for many different
dental materials. However, PMMA appliances and products do not have the best
mechanical properties. Various fillers and oils, such as bergamot essential oil, thymol, eucalyptus, mer ,maid and ginger, have been added to address this issue. So,
this study looked at what happened when lemongrass essential oil (LGEO) was
added to heat-cured PMMA denture base material and how it changed the properties of PMMA. Methods: 120 samples were prepared and split into four equal
groups based on the tests that were done (the transverse strength, impact strength,
surface roughness, and surface hardness), and each group their specimens were
prepared and divided into three groups; control 0 vol.% without additive and two
experimental groups (with 2.5 vol. % LGEO additive, with 5 vol. % LGEO additive) Results: The addition of 5 vol. % LGEO has the best effect on the acrylic's
improved mechanical and physical properties (transverse strength, impact strength,
and surface roughness) except for the surface hardness, which is less affected with
the addition of 2.5 vol. % LGEO at p < 0.05. Conclusion: By adding LGEO to
heat-curing acrylic material, it is possible to make a material with better mechanical and physical properties
Keywords: Essential oils, Lemongrass essential oil, Mechanical properties, Physical properties, polymethylmethacrylate material.