Optical parameters and hardness of two maxillofacial elastomers after immersion in different brazilian green propolis extract solutions

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dc.creatorNathália Bahia Miranda
dc.creatorJosé Alcides Almeida de Arruda
dc.creatorSandra Barbosa Moraes de Almeida
dc.creatorEmerson Gomes dos Santos
dc.creatorIgor Studart Medeiros
dc.creatorAmália Moreno
dc.date.accessioned2023-07-16T18:18:18Z
dc.date.accessioned2025-09-09T00:49:54Z
dc.date.available2023-07-16T18:18:18Z
dc.date.issued2019-03-27
dc.identifier.doihttps://doi.org/10.1016/j.prosdent.2019.01.020
dc.identifier.issn00223913
dc.identifier.urihttps://hdl.handle.net/1843/56365
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Prosthetic Dentistry
dc.rightsAcesso Restrito
dc.subjectPropolis
dc.subjectInfection control
dc.subjectDisinfection
dc.subjectOptical Imaging
dc.subjectHardness
dc.subjectElastic tissue
dc.subjectDisinfectants
dc.titleOptical parameters and hardness of two maxillofacial elastomers after immersion in different brazilian green propolis extract solutions
dc.typeArtigo de periódico
local.citation.epage175
local.citation.issue2
local.citation.spage168
local.citation.volume122
local.description.resumoStatement of problem Maxillofacial elastomers undergo physical and mechanical degradation with disinfecting solutions. Solutions of Brazilian green propolis extract may be suitable alternatives for infection control of maxillofacial prostheses. However, their effects on the properties of the material are unknown. Purpose The purpose of this in vitro study was to evaluate the effect of disinfection with solutions of Brazilian green propolis extract on the transmittance, translucency parameter, contrast ratio, and hardness of 2 maxillofacial elastomers (MDX4-4210 and MED-4014). Material and methods Fifty disk-shaped specimens (3×10 mm) of each elastomer were randomly and equally divided into 4 groups of disinfectant agents and 1 control group: 3 separate groups of 11% green propolis extracts including aqueous (PAQ), glycolic (PGL), and alcoholic (PAL), a 2% chlorhexidine gluconate (CHX) group, and the control group of distilled water. Specimens were subjected to disinfection by immersion 3 times a week for 60 days. Color differences (ΔE values) were calculated with CIELab and CIEDE2000 formulas. Optical parameters and Shore A hardness were determined at 2 time points: at baseline and after the period of specimen disinfection. Data were analyzed by parametric and nonparametric analysis of variance and by multiple-comparison tests (α=.05). Results The ΔE values of specimens immersed in 11% PAL were not clinically acceptable for either elastomer. Regarding translucency parameter and contrast ratio, the immersion in 11% PAL and 11% PGL resulted in greater opacity and lower translucency of the material. Mean Shore A hardness values were not statistically significantly different at baseline or after 60 days of immersion in the solutions. Conclusions The solution of Brazilian green propolis extract tested showed changes in optical parameters. Elastomers immersed in 11% alcoholic green propolis extract showed clinically unacceptable color and translucency changes. All hardness values of the tested elastomers were clinically acceptable after immersion in all tested disinfectant groups
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE CLÍNICA
local.publisher.initialsUFMG
local.url.externahttps://www.thejpd.org/article/S0022-3913(19)30101-5/fulltext

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