Analysis of three disinfectants after immersion of irreversible hydrocolloid and ZOE paste impressions.

Authors

  • Sheila R. S. Porta Uberlandia Federal University
  • Vanderlei L. Gomes Uberlandia Federal University
  • Luiz A. Pavanin Uberlandia Federal University
  • Carla C. B. Souza Uberlandia Federal University

DOI:

https://doi.org/10.20396/bjos.v5i18.8641909

Keywords:

Disinfection. Disinfectants. Dental impression materials

Abstract

This investigation sought to analyze 3 disinfectants: 0.5% chlorhexidine, 2% glutaraldehyde, and 1% sodium hypochlorite after immersion of irreversible hydrocolloid and zinc oxide-eugenol paste impressions. Changes detected in the solutions could suggest alterations in the dental impressions, compromising their quality and negatively influencing treatment outcome. Forty-five irreversible hydrocolloid impressions (Jeltrate) made in aluminum stock impression trays (AG) as well as 45 irreversible hydrocolloid and 45 zinc oxide-eugenol paste (Horus) impressions made in auto polymerizing acrylic resin (AAR) trays (VipiFlash) were immediately immersed in 200mL of 0.5% chlorhexidine (Labfa), 2% glutaraldehyde (Glutaron II), or 1% sodium hypochlorite ( Miyako) solutions for 10, 30, and 60 minutes. After immersion the solutions were analyzed by visible ultraviolet spectroscopy and turbidimetry to verify possible alterations. Turbidimetry (registered in nephelometric turbidity units -NTU) results were subjected to Kruskal-Wallis and Mann-Whitney tests for statistical analysis (á=.05). An increase of absorption levels of all disinfectants was found after immersion of irreversible hydrocolloid impressions. This increase was proportional to time of immersion and absorption was higher for 0.5% chlorhexidine for the 3 time periods analyzed. Only 1% sodium hypochlorite presented statistically significant alterations after immersion of zinc oxideeugenol paste impressions.

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Author Biographies

Vanderlei L. Gomes, Uberlandia Federal University

has graduation at ODONTOLOGIA DA UNIVERSIDADE DE UBERLÂNDIA by Universidade Federal de Uberlândia (1975) , specialization at Metologia do Ensino Superior by Universidade Federal de Uberlândia (1979) , specialization at Prótese Dentária by Conselho Regional de Odontologia Goiás (1983) , master's at Odontologia (Clínica Integrada) by Universidade de São Paulo (1985) and Ph.D. at Odontologia (Reabilitação Oral) by Universidade de São Paulo (1996) . Currently is professor of Universidade Federal de Uberlândia. Has experience in the area of Odontology. Focused, mainly, in the subjects: Resinas acrílicas, prótese removível total, Processamento das Próteses Removíveis, fotoelasticidade. 

Luiz A. Pavanin, Uberlandia Federal University

Graduate at Licenciatura e Bacharelado em Química from Universidade de São Paulo (1979), master's at Química from Universidade Estadual Paulista Júlio de Mesquita Filho (1982) and ph.d. at Chemistry from Universidade de São Paulo (1988). Has experience in Chemistry, focusing on Inorganic Chemistry, acting on the following subjects: sistema supramolecular, aminas de rutênio, aminas, ligantes piridinicos and cis-tetraaminas.

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Published

2015-11-26

How to Cite

1.
Porta SRS, Gomes VL, Pavanin LA, Souza CCB. Analysis of three disinfectants after immersion of irreversible hydrocolloid and ZOE paste impressions. Braz. J. Oral Sci. [Internet]. 2015 Nov. 26 [cited 2022 Nov. 26];5(18):1094-100. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641909