ObjectiveTo evaluate the surface roughness of two makes of autopolymerized acrylic resin (Classic Dencor ® and Duralay ® ) with two different methods of finishing and polishing (conventional and using the Dhpro ® finishing & polishing kit).
Methods
A total of 20 specimens (10 of each make) was obtained using Zetalabor ® --Zhermak condensation silicone molds. After polymerization, 20 blocks of resin were divided in two and subjected to two types of finishing and polishing, one at each end. The types of finishing and polishing were as follows: conventional (lathe) and using the Dhpro ® finishing & polishing kit. Once finished and polished, the specimens were subjected to surface roughness testing using a roughness meter and were analyzed via the Student's t-test.
Results
There is a statistically significant difference between the forms of polishing, unrelated to the brand of acrylic resin. Conventional polishing achieved a level of 0.12 µm for both resins and the DhPro ® polishing presented roughness a little above 0.2 µm.
ConclusionConventional polishing is superior to the DhPro ® kit, as it achieves lower levels of roughness. There is no significant difference between the acrylic resins in terms of surface roughness after the finishing and polishing processes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.