Effect of Disinfectants on Mechanical Properties of Orthodontic Acrylics

Bensel, Tobias; Bock, Jens; Kebernik, Anne; Arnold, Christin; Mansour, Sonia; Boeckler, Arne F.

doi:10.1155/2019/1096208

Cited by 4 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changes to the surface of the acrylic resin are related to an increase in microbial colonization and caused by the action of chemical and mechanical agents used during oral hygiene. Studies have indicated surface roughness induced by chemical products used for disinfection, specially solutions containing alcohol (Bensel et al 2019;Jo et al 2019), quaternary ammonium compounds, acids and anionic surfactants (Hsu et al 2020).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of cleaning solutions on surface roughness and flexural strength of removable orthodontic appliances

Galo

Andrade²,

Santos³

et al. 2023

RSD

View full text Add to dashboard Cite

Purpose: Compare the roughness of self-curing acrylic resin and the flexural strength of nickel-chrome (Ni-Cr) wires of orthodontic appliances submitted to different cleaning processes. Materials and methods: Samples were made with NiCr orthodontic wires bent into a “T” loop and embedded in self-curing acrylic resin and submitted to four different cleaning procedures (n = 21): Group 1 – immersion for 15 minutes in deionized water and active oxygen-based tablet; Group 2 - immersion for 15 minutes in chlorhexidine 0.12%; Group 3 – spray with chlorhexidine 0.12% solution; and Group 4 – immersion in deionized water (control) por 15 minutes twice a day. Flexural strength of the orthodontic wire and roughness of the acrylic resin surface were determined at baseline as well as 90 and 120 days using an optical microscope. Normality of the data was determined using the Shapiro-Wilk test. The Kruskal-Wallis and Mann-Whitney tests were used for comparisons of surface roughness. ANOVA followed by Duncan’s post hoc test was used for the comparison of flexural strength (α = 0.05). Results: No significant difference in surface roughness was found, except in Group 4, in which the last reading (2.25 ± 0.89) was significantly higher than the baseline reading (1.15 ± 0.27) (p = 0.013). Significant reductions in the flexural strength of the wires occurred in all groups (p = 0.002). Conclusions: Immersion in the cleaning solutions did not alter the surface roughness of the acrylic resin but promoted a reduction in the flexural strength of the wires.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The study was carried out on materials for use in the manufacture of orthodontic appliances, which do not require the approval of ethics committee. The number of test specimens was established based on the results of other study (Bensel et al 2019). The sample size was calculated considering an alpha of 0.05 and an 80% test power.…”

Section: Experimental Designmentioning

confidence: 99%

Effect of cleaning solutions on surface roughness and flexural strength of removable orthodontic appliances

Galo

Andrade²,

Santos³

et al. 2023

RSD

View full text Add to dashboard Cite

show abstract

“…Previous reports have indicated changes in surface roughness induced by chemical agents used for disinfection, mainly solutions containing alcohol. 31,32 Nevertheless, in these studies, the specimens were progressively polished with silicon carbide sandpaper and polishing solution, leading to a smooth surface as a baseline, without considering the non-polished areas of the orthodontic appliances. In comparison to the present study, we did not polish the specimens to mimic a situation when clinicians do not perform these steps.…”

Section: Discussionmentioning

confidence: 99%

“…Previous reports have indicated changes in surface roughness induced by chemical agents used for disinfection, mainly solutions containing alcohol. 31 , 32 …”

Section: Discussionmentioning

confidence: 99%

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

Hsu

Balhaddad

García

et al. 2020

J Dent Res Dent Clin Dent Prospects

View full text Add to dashboard Cite

Background. The disinfection of orthodontic acrylic resins might change the physical and mechanicalproperties of these materials. We aimed to investigate the impact of four different commercially availabledisinfectants on the surface roughness of acrylic resins used for orthodontic appliances. Methods. Four disinfectant solutions (BirexSE, Opti-Cide3, COEfect MinuteSpray, and CaviCideSpray) were used to disinfect orthodontic acrylic resins using the spraying method. The resins weresubjected to repeated disinfection protocols. Distilled water, also applied via spraying method, was usedas a control. Surface roughness was scrutinized to examine the extent of surface topography changes bystylus profilometry. Data normality was evaluated via the Shapiro–Wilk test, followed by the WilcoxonSigned-Rank test for non-parametric data or paired Student’s t-test for parametric data to compareintra-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 surfaceroughness values before and after the disinfection compared to the controls (P<0.05). The groups thatwere in contact with distilled water, Opti-Cide, and Coeffect did not exhibit significant differences insurface roughness before and after the intervention (P>0.05). However, from a clinical perspective, theresulting variations in surface roughness (<%0.15) induced by these solutions might not reflect clinicallysignificant 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 significantchanges in their evidence-based approach regarding potential material damages by disinfection sprays.

show abstract

“…So far, various chemical disinfectant solutions have been used to eliminate oral microorganisms from acrylic resins. However, several studies have shown that these disinfectants exert negative effects on the mechanical and physical properties of acrylic resins, such as flexural strength [ 3 ], roughness [ 4 , 5 ], hardness [ 6 , 7 , 8 ], and color [ 3 , 9 ]. On the other hand, chemical and mechanical methods, such as manual brushing with a toothbrush, depend on patient cooperation.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of Chitosan Nanoparticles into a Cold-Cure Orthodontic Acrylic Resin: Effects on Mechanical Properties

2021

View full text Add to dashboard Cite

Improvement of the antibacterial properties of acrylic resins, used in the construction of removable orthodontic appliances, is an important strategy to reduce the incidence of caries and oral diseases in orthodontic treatments. The addition of antimicrobial agents to acrylic resins is one of the effective methods to enhance the antimicrobial properties of these materials. However, one main concern is that modification of acrylic resin has negative effects on its mechanical properties. Recently, chitosan nanoparticles (NPs), as biocompatible and biodegradable polysaccharides with remarkable antimicrobial properties, have been used in different areas of dentistry and medicine. This study aimed to investigate the effects of adding chitosan NPs on the mechanical properties of a cold-cure orthodontic acrylic resin. The chitosan NPs were added to the acrylic resin in various weight percentages: 0% (control), 0.5%, 1%, 2%, and 4%. The flexural strength, compressive strength, Vickers microhardness, and impact strength measurements were performed for all five groups. The results showed that adding up to 1% (w/w) chitosan NPs to an acrylic resin had no significant negative effects on its flexural strength and compressive strength, while it decreased these parameters at weight percentages of 2% and 4% (w/w). The results also revealed that modification of acrylic resin with chitosan NPs up to 4% had no significant negative effects on the microhardness and impact strength of acrylic resin. In conclusion, the addition of chitosan NPs up to 1% (w/w) had no significant negative effects on the mechanical properties of cold-cure acrylic resin.

show abstract

Effect of Disinfectants on Mechanical Properties of Orthodontic Acrylics

Cited by 4 publications

References 26 publications

Effect of cleaning solutions on surface roughness and flexural strength of removable orthodontic appliances

Effect of cleaning solutions on surface roughness and flexural strength of removable orthodontic appliances

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

Incorporation of Chitosan Nanoparticles into a Cold-Cure Orthodontic Acrylic Resin: Effects on Mechanical Properties

Contact Info

Product

Resources

About