NDLI: The influence of mixing methods and disinfectant on the physical properties of alginate impression materials.

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The influence of mixing methods and disinfectant on the physical properties of alginate impression materials.

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The influence of mixing methods and disinfectant on the physical properties of alginate impression materials.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Dreesen, Karoline Kellens, Annelies Wevers, Martine Thilakarathne, Pushpike J. Willems, Guy
Description	Country affiliation: Belgium Author Affiliation: Dreesen K ( Department of Oral Health Sciences, Orthodontics, Katholieke Universiteit Leuven, Leuven, Belgium.)
Abstract	The aims of this in vitro study were to quantify the effect of manual versus automatic mixing and of using a disinfectant on mechanical properties of three different alginate impression materials. Two of the three alginates tested were especially developed for orthodontic use: Orthotrace® and Orthofine® while the third was a conventional alginate CA37FS®. Alginates were mixed by hand or automatically using a Cavex alginate mixer II®. Mixing was performed at room temperature using tap water. The material was allowed to set in a water bath at 35°C (±1°C), simulating intra-oral setting conditions, and half of the samples were disinfected before testing. For each tested material, 10 standardized samples were used. The disinfectant used was the CavexImpreSafe® that has a bactericide, virucide, and fungicide function. The specimens were exposed for 3 minutes in a 3% solution and were then tested according to the ISO 1563: 1990 (E) standard specifications. Descriptive statistics and three-way analysis of variance were performed, and a 5% significance level was used for statistical analysis. Evaluation of tensile strength and elastic recovery of different alginate samples, hand versus automatical mixing or disinfected versus not disinfected, resulted in significant differences for all materials except for Orthofine®. Considering detail reproduction, all three alginates evaluated reproduced the 50-µm line successfully without interruption. The mixing method can significantly affect the elastic recovery and tensile strength of the alginates tested while the effect of using a disinfectant is less explicit.
File Format	HTM / HTML
ISSN	01415387
e-ISSN	14602210
Journal	European Journal of Orthodontics
Issue Number	3
Volume Number	35
Language	English
Publisher	Oxford University Press
Publisher Date	2013-06-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Dentistry Discipline Orthodontics Alginates Chemistry Dental Impression Materials Dental Impression Technique Disinfectants Pharmacology Chemistry, Physical Instrumentation Elasticity Materials Testing Tensile Strength
Content Type	Text
Resource Type	Article
Subject	Orthodontics

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