Effect of different polishing methods on surface roughness of provisional prosthetic materials

Effect of different polishing methods on surface roughness of provisional prosthetic materials

Purpose: To evaluate the surface roughness of bis-acrylic and acrylic resins submitted to different methods of polishing. Materials and Methods: Fifty samples of each provisional restorative material (Structur 2, Protemp 4, Duralay, and Dencrilay) were fabricated (10 mm × 2 mm) and divided into five...

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Published in:The journal of Indian Prosthodontic Society Vol. 18; no. 2; pp. 96 - 101
Main Authors: Tupinamba, Ivian, Giampá, Priscila, Rocha, Isadora, Lima, Emilena
Format: Journal Article
Language:English
Published: India Wolters Kluwer India Pvt. Ltd 01-04-2018
Medknow Publications and Media Pvt. Ltd
Medknow Publications & Media Pvt. Ltd
Medknow Publications & Media Pvt Ltd
Wolters Kluwer Medknow Publications
Subjects:
Acrylic resins
Clinical medicine
Data processing
dental materials
dental restoration
Dental restorative materials
Finishing
Hair
Methods
Original
Polishing
Polyesters
Polymethyl methacrylate
Properties
Prostheses
Prostheses and implants
Public health
Resins
Silicones
Stainless steel
Statistical analysis
Surface roughness
temporary
Toothbrushes
Brazil
dental restoration
temporary
Acrylic resins
dental materials
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Summary:Purpose: To evaluate the surface roughness of bis-acrylic and acrylic resins submitted to different methods of polishing. Materials and Methods: Fifty samples of each provisional restorative material (Structur 2, Protemp 4, Duralay, and Dencrilay) were fabricated (10 mm × 2 mm) and divided into five groups (n = 10): (1) positive control group - polyester strip; (2) negative control - unpolished; (3) abrasive tips (Exa-Technique-Edenta); (4) goat hair brush and diamond polishing paste; and (5) silicone tips (Enhance). Each material was mixed and polymerized according to manufacturer's instructions. The parameter evaluated was the arithmetic mean of the surface roughness (Ra) determined using the rugosimeter SJ 301 (Mitutoyo, Japan). The data were analyzed with two-way analysis of variance (post hoc Tukey's test) (P < 0.05). Results: The lowest surface roughness values (0,22-0,90 μm) were observed in the Group 4 - goat hair brush and diamond paste, while the highest values (1,17-1,44 μm) were found in the Group 5 - silicone tips (enhance), with statistically significant differences between them, except for Dencrilay acrylic resin. There was statistically significant difference between bis-acrylic and acrylic resins in the Groups 1, 2, and 4. Conclusions: Within the limitations of this study, it was concluded that the most effective polishing system was the goat hair brush with diamond paste for both bis-acrylic and acrylic resins. The bis-acrylic resins exhibited significantly smoother surfaces than the acrylic resins.
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ISSN:0972-4052
1998-4057
DOI:10.4103/jips.jips_258_17