Natural Sciences, Stomotology, 2026
ISSN: 1829-006X
COMPARATIVE EVALUATION OF EFFECT OF AZADIRACHTA INDICA ON SURFACE ROUGHNESS, HARDNESS AND COLOR STABILITY OF POLYMETHYL METHACRYLATE DENTURE BASE MATERIAL – IN VITRO STUDY
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Submitted: 2026-04-08
© 2026 by author(s) and The Gufo Inc.
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Abstract
Background:The study consists of two groups. Group-A, prepared with unmodified.
Polymethylmathacrylate(PMMA) resin and Group-B prepared with PMMA incorporated with neem oil.
Colour stability assessment was done using the UV-Vis Spectrophotometer. The initial colour of both groups
and after exposure color changes and Delta E (∆E) value was calculated. Surface roughness assessed using
Profilometer. Hardness was assessed by Vickers hardness number. Data subjected to statistical analysis. As the
data was normally distributed (p > 0.05) parametric tests of significance were used. Independent Sample t-test
was used. P value of < 0.05 was considered to be statistically significant.
Materilas and Methods: The results obtained from the study indicate that there is a significant difference in the surface roughness of the experimental group of mean 0.0718 was found to be statistically significant (p <0.05) than the control group at baseline with a mean of 0.5652. The post immersion mean of Group B for surface roughness was also lesser than that of Group A.
Results: The results obtained from the study indicate that there is a significant difference in the surface roughness of the experimental group of mean 0.0718 was found to be statistically significant (p <0.05) than the control group at baseline with a mean of 0.5652.The post immersion mean of Group B for surface roughness was also lesser than that of Group A.
Conclusion: This in vitro study shows how PMMA can be modified with fillers such as neem oil to improvise
its physical and mechanical properties. The properties of PMMA incorporated with neem oil was comparatively better than conventional resin.Significantly better properties indicate their ability to overcome the shortfalls in PMMA resin.