Home About Login Current Archives Announcements Editorial Board
Submit Now For Authors Call for Submissions Statistics Contact
Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44406

Effect of Dentifrice on Surface Roughness of Dental Casting Alloys and Glass Ceramics

Luckshmann Muppudathi, Ahila Singaravel Chidambaranathan, Balasubramaium Muthu Kumar


Background: The surface roughness of metal surface is of clinical importance in the process of bacterial retention which facilitate caries and periodontitis. Objective:To evaluate and compare the tooth brush induced surface roughness of Cobalt-Chromium alloy (Co-Cr), Nickel-Chromium alloy (Ni-Cr) and ceramic surface before and after brushing using toothpaste and toothpowder. Materials and Methods:Master die with 40 x 15 x 5 mm for casting of Cobalt Chromium, Nickel Chromium metal and 40 x 15 x 3 mm for metal substructure for ceramic was made. A total of 60 samples were made and divided into Group .1 (Ni-Cr),group.2(Co-Cr) and Group.3 (ceramic).Each group is further subdivided into Group.a (brushed in a slurry of toothpaste), Group.b (brushed in a slurry of toothpowder).The length of the hard bristles was 35 mm. The surface roughness after brushing was analyzed using profilometer at 0.5 min/s. The surface roughness of test samples in each sub-group before brushing and after brushing were compared using paired T test. In each group the Ra, Rv and Rp values between subgroups were compared by independent samples test (ttest). Result: The significant value p <0.001 considered as statistically significant. Conclusion:Nickel-Chromium alloys produced more surface roughness compared to CobaltChromium and ceramic after brushing in toothpaste and toothpowder.


Artificial saliva, Ceramic, Cobalt-Chromium, Nickel-Chromium, Surface roughness

Full Text