SciELO - Scientific Electronic Library Online

 
vol.65 issue4Evaluation of the tip of standardized D0 gutta percha cones of four Rotary systems, by means of an endodontic rulerImmediate loading over lower prosthesis in edentulous mandibles: comparison between two types of prosthetic connection author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


RGO - Revista Gaúcha de Odontologia

Print version ISSN 0103-6971On-line version ISSN 1981-8637

Abstract

DUARTE, Gabriel Lúcio Calazans et al. Effect of finishing and polishing methods on surface roughness of autopolymerized acrylic resins. RGO, Rev. Gaúch. Odontol. [online]. 2017, vol.65, n.4, pp.303-307. ISSN 1981-8637.  https://doi.org/10.1590/1981-86372017000200003241.

Objective

: To 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.

Conclusion

: Conventional 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.

Keywords : Acrylic resins; Dental polishing; Esthetics, dental.

        · abstract in Portuguese     · text in English     · English ( pdf )