The setting of vinyl polysiloxane and condensation silicone putties when mixed with gloved hands

Reitz, Clair D.; Clark, Nereyda P.

doi:10.14219/jada.archive.1988.0236

Cited by 27 publications

(12 citation statements)

References 3 publications

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“…Delay in the setting reaction might result from the starch itself or the sulfur-containing accelerator particles present in the latex that have penetrated into the starch. [23][24][25][26][27] It has also been reported that contamination of radiographic films with these gloves during processing of the films has a deleterious effect on image quality. 28 Since the introduction of latex gloves some questions have been raised concerning the effect of this material on resin bonds for restorative procedures, with no consensus in this regard.…”

Section: Introductionmentioning

confidence: 99%

Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

Oskoee¹,

Navimipour²,

Bahari³

et al. 2012

Operative Dentistry

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In order to avoid the negative effect of contamination of composite resins with powdered latex gloves on the bond strength of two-step self-etching adhesive systems, the use of unpowdered latex gloves is recommended with these adhesive systems. SUMMARYThe aim of the present study was to evaluate the effect of composite resin contamination with powdered and unpowdered latex gloves on the shear bond strength of etch-and-rinse and two-step self-etch adhesive systems. Standard flat dentin surfaces were prepared on the facial aspect of 120 bovine incisors and randomly assigned into two (n=60) groups: group 1: Single Bond (SB), group 2: Clearfil SE Bond (CSE). Furthermore, each group was randomly subdivided into three (n=20) based on the type of composite contamination (without contamination, contamination with powdered latex gloves, and contamination with unpowdered latex gloves). The adhesives were applied and resin composite bonded to the dentin. After thermocycling, the specimens were subjected to a shear bond strength test. Two-way analysis of variance (ANOVA) and a post hoc Bonferroni test were used for statistical analysis. One-way ANOVA was used to compare shear bond strength values in each group. Statistical

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Section: Introductionmentioning

confidence: 99%

Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

Oskoee¹,

Navimipour²,

Bahari³

et al. 2012

Operative Dentistry

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“…Some gloves (Sensitive -vynil; Safeskin -natural rubber) were used only under a non-washed condition, since they have already presented good compatibility with the silicone putties 7,9,14,15 , a behavior also noted in our preliminary tests. The other gloves (natural rubber) were used under washed and non-washed conditions, since under this condition compatibility may be better 7 or not 8 .…”

Section: Methodsmentioning

confidence: 81%

“…These results, however, were not confirmed by Kahn and Donovan's 8 study. Other authors 7,9,14,15 verified that vinyl or synthetic latex gloves may not inhibit the setting of vinyl polysiloxane putty impression materials, which also lead to the recommendation of a routine use of synthetic latex gloves 6 . Causton et al 5 verified that dithiocarbamatebased chemicals used in the manufacturing procedures of many latex glove types were a probable factor responsible for the inhibition of the setting of vinyl polysiloxane putty impression materials.…”

Section: Introductionmentioning

confidence: 97%

“…Among the adopted precautions, the routine use of disposable gloves, mainly latex ones, is an essential measure to break the chain of infection 2,13,16 . However, some papers have shown that the handling of some addition silicones with latex gloves may alter the setting of these materials 3,4,10,13,14 . Cook and Thomaz 7 showed that if gloves are first washed, the level of setting inhibition is reduced.…”

Section: Introductionmentioning

confidence: 99%

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The influence of handling on the elasticity of addition silicone putties

Filho

Muench

Francci

et al. 2003

Pesqui. Odontol. Bras.

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ABSTRACT:The handling of vinyl polysiloxane (addition silicone) impression putties with latex gloves is said to interfere with the setting of these impression materials. The aim of this study is to evaluate the effect of handling techniques on the setting of vinyl polysiloxane impression putties using several types of gloves. The setting of these materials was evaluated by means of an elasticimeter. Four vinyl polysiloxane putty impression materials and five brands of gloves (one made of vinyl, one of synthetic rubber, and three of natural rubber) were studied. Based on the type of glove, they were previously washed or not, and a spatula was used or not for initial mixing (before handmixing). The vinyl, the synthetic and one of the natural rubber gloves did not require the previous washing procedure and/or the use of a spatula for initial mixing. Two other natural rubber gloves -depending on the silicone -, showed satisfactory results only when the initial mixing was performed with a spatula. It was concluded that setting inhibition depends on the kind of vinyl polysiloxane impression material and the kind of gloves used, but when the initial mixing was performed with the spatula this setting inhibition was overcome. The results of this study also showed that it is possible to associate cross-contamination control and satisfactory performance of addition silicone putty materials. When doubts arise from the compatibility between vinyl polysiloxane impression putties and gloves, the initial mixing should be performed with a spatula. DESCRIPTORS: Silicones; Elasticity; Control groups; Dental materials. RESUMO:A finalidade da presente pesquisa foi avaliar a influência na elasticidade da manipulação de silicones de adição em consistência de massa, por meio de várias técnicas, empregando-se luvas. A polimerização dos materiais foi avaliada por meio de um elasticímetro. Ensaiaram-se quatro silicones, empregando cinco marcas de luvas (uma de vinil, uma de borracha sintética e três de borracha natural). Dependendo do tipo de luva, ela foi lavada ou não e ainda foi utilizada ou não uma espátula para a mistura inicial dos silicones. Os resultados demonstraram que no emprego das luvas de vinil, uma das de borracha sintética e uma das de borracha natural não precisaram ser lavadas, nem a utilização de espátula para a mistura inicial foi necessária. Duas luvas de borracha natural não conduziram a resultados satisfatórios com todos os silicones sem que a mistura inicial fosse feita com a espátula mas, com essa prática, todas as luvas foram compatíveis com todos os silicones. Pode-se concluir que, em caso de dúvida sobre a compatibilidade entre tipo de luva e marca de silicone, o emprego de espátula na mistura inicial contorna o problema.

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“…Many researchers have tried to make it hydrophilic by incorporating surfactants into the material, which reduce the contact angle, improve the wettability and simplify the pouring of gypsum models (3). Moreover, the polymerization of hydrophilic polyvinyl siloxane impression material is inhibited by sulfur compounds which are contained in latex gloves, rubber dam sheets and some surface containing retraction cord medicaments such as aluminum sulfate and ferric sulfate (4,5,6). …”

Section: Introductionmentioning

confidence: 99%

Comparison of the effect of different medicaments on surface reproduction of two commercially available Polyvinyl Siloxane impression materials - An Invitro Study

Singh

Gambhir

et al. 2013

J Clin Exp Dent

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Objective:To determine the effect of different retraction cord medicaments on surface detail reproduction of polyvinyl siloxane impression materials and compare this effect on any two brands of commercially available polyvinyl siloxane impression materials. Material and methods: Four stainless steel dies were made according to ADA specification no.19. Three dies were treated with aluminium chloride (5%), ferric sulphate (13.3%) and epinephrine (0.1%) while the fourth one was left untreated to serve as control. Two impression materials (Dentsply and 3M ESPE) were used. Results: All the three medicaments adversely affected the surface detail reproduction of both the brands of the polyvinyl siloxane impression materials. These effects were statistically significant as compared to untreated control. The impressions of 3M ESPE brand have shown better surface detail reproduction as compared to Dentsply impression material. Conclusion: Surface detail reproduction of the polyvinyl siloxane impression materials is adversely affected by the retraction cord medicaments. The presence of moisture or any traces of the medicaments should be removed from the tooth surface to provide a dry field for the correct reproduction of the surface detail of these materials. Key words:Polyvinyl Siloxane, retraction cord medicaments, surface detail reproduction.

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The setting of vinyl polysiloxane and condensation silicone putties when mixed with gloved hands

Cited by 27 publications

References 3 publications

Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

Effect of Composite Resin Contamination with Powdered and Unpowdered Latex Gloves on Its Shear Bond Strength to Bovine Dentin

The influence of handling on the elasticity of addition silicone putties

Comparison of the effect of different medicaments on surface reproduction of two commercially available Polyvinyl Siloxane impression materials - An Invitro Study

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