J Dent Res Dent Clin Dent Prospects. 2020;14(2): 77-82.
doi: 10.34172/joddd.2020.019
  Abstract View: 251
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Basic Research

Original Article

Assessment of surface roughness changes on orthodontic acrylic resins by all-in-one spray disinfectant solutions

Kuei-ling Hsu 1,2 ORCID logo, Abdulrahman A. Balhaddad 1,3 ORCID logo, Isadora Martini Garcia 1,4, Fabrício Mezzomo Collares 4, Louis DePaola 5, Mary Anne Melo 1,6* ORCID logo

1 Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
2 Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
3 Department of Restorative Dental Sciences, Imam Abdulrahman Bin Faisal University, College of Dentistry, Dammam, Saudi Arabia
4 Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, 90035-003, RS, Brazil
5 Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
6 Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
*Corresponding authors: Mary Anne Melo. Tel:+1- 4107068705. Email: mmelo@umaryland.edu


Background. The disinfection of orthodontic acrylic resins might change the physical and mechanical properties of these materials. We aimed to investigate the impact of four different commercially available disinfectants on the surface roughness of acrylic resins used for orthodontic appliances.

Methods. Four disinfectant solutions (BirexSE, Opti-Cide3, COEfect MinuteSpray, and CaviCide Spray) were used to disinfect orthodontic acrylic resins using the spraying method. The resins were subjected to repeated disinfection protocols. Distilled water, also applied via spraying method, was used as a control. Surface roughness was scrutinized to examine the extent of surface topography changes by stylus profilometry. Data normality was evaluated via the Shapiro–Wilk test, followed by the Wilcoxon Signed-Rank test for non-parametric data or paired Student’s t-test for parametric data to compare intra-group differences in roughness before and after the use of the disinfectant solutions.

Results. Some of the disinfectants (BirexSE and CaviCide) resulted in significant changes in surface roughness values before and after the disinfection compared to the controls (P<0.05). The groups that were in contact with distilled water, Opti-Cide, and Coeffect did not exhibit significant differences in surface roughness before and after the intervention (P>0.05). However, from a clinical perspective, the resulting variations in surface roughness (<0.15%) induced by these solutions might not reflect clinically significant differences.

Conclusion. The use of disinfectant solutions is unlikely to harm the surface of orthodontic acrylic resins. Oral care providers need to be attentive to the interpretation and implementation of clinically significant changes in their evidence-based approach regarding potential material damages by disinfection sprays.

Keywords: Acrylic resin, Disinfection, Orthodontic, Surface roughness
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Submitted: 06 Mar 2020
Accepted: 24 Apr 2020
ePublished: 17 Jun 2020
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