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CC BY-NC-ND 4.0 · Eur J Dent 2018; 12(02): 232-236
DOI: 10.4103/ejd.ejd_195_17
Original Article
European Journal of Dentistry

Influence of chloramine-T disinfection on elastomeric impression stability

Ricardo Danil Guiraldo
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Sandrine Bittencourt Berger
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Marilia Franco Punhagui
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Thais Staut Moretto
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Murilo Baena Lopes
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Alcides Gonini-Júnior
1   Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Paraná, Brazil
,
Mário Alexandre Coelho Sinhoreti
2   Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
› Author Affiliations
Further Information

Publication History

Publication Date:
16 September 2019 (online)

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ABSTRACT

Objective: The aim of this study was to evaluate the stability of elastomer through detail reproduction and its dimensional stability (DS) after disinfection with 0.2% chloramine-T. Materials and Methods: The elastomeric impression dental materials used in this study were polydimethylsiloxane (Oranwash L), polyvinyl siloxane (Express), polysulfide (Permlastic), and polyether (Impregum Soft). The entire press procedure was performed on a matrix in accordance with the ISO 4823. Detail reproduction was analyzed using an optical microscope (Stereozoom Microscope) over the 20-μm line with 25 mm of length at a magnification of ×4. DS was measured using an optical microscope (Scanning Tunneling Microscope) by subtracting the distance between the lines X and X’ over the 20-μm line on the matrix (DM) from the distance between the lines on the impression material (DI) divided by DM and multiplied by 100 establishing the equation: DS = ([DI – DM]/DM) ×100; then, 100% was added to the results of the equation. The detail reproduction values were subsequently subjected to descriptive analysis by percentage (%), and the DS values (%) were submitted to Kolmogorov–Smirnov test, two-way ANOVA (material × disinfectant), and Tukey’s test (α = 0.05). Results: All elastomeric impression materials showed 100% of detail reproduction, regardless of the disinfection procedure. Polysulfide (not disinfected) and polysulfide and polydimethylsiloxane (after disinfection with 0.2% chloramine-T) showed the smaller mean values of DS. Conclusion: According to the stability properties analyzed, chloramine-T can be used for disinfection of elastomer molds.

Key words:

Detail reproduction - dimensional stability - disinfectant solution - elastomeric impression materials
 

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