Dimensional stability of a novel polyvinyl siloxane impression technique

Leão, Moira Pedroso; Pinto, Camila Paloma; Sponchiado, Ana Paula; Ornaghi, Bárbara Pick

doi:10.1590/1677-3225v13n2a08

Cited by 10 publications

(9 citation statements)

References 19 publications

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“…11 Innovations in PVS impression materials aim to enhance precision and limit some clinical handicaps such as bubbles, voids, tears, and pulls. 12 On the other hand, PVS are inherently hydrophobic and because of their hydrophobic behavior, their applications are limited to dry conditions. Nowadays, the new formulation 'hydrophilic' polyvinyl siloxanes have been produced which can better penetrate moist dental surfaces.…”

Section: Introductionmentioning

confidence: 99%

Model Elde Etme Süresinin Polivinil Siloksan Ölçü Malzemelerinin Boyutsal Doğruluğu Üzerine Etkisi

Özsoy

Najafova

Boyacıoğlu

et al. 2021

Kocaeli Üniversitesi Sağlık Bilimleri Dergisi

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Objective: The aim of this study was to evaluate of the dimensional accuracy of Polyvinylsiloxane (PVS) impression materials (Spirias, Imicryl, Konya, Turkey and Variotime, Heraeus, Hanau, Germany) by using stone models after different pouring time (1 hour and 24 hours). Methods: A standard maxillary dentulous acrylic model was selected as master model. Two linear measurements were selected on each sample for the evaluation of the models (x: 13-23 distance, y: 13-26 distance). A total of 40 samples were divided into 4 groups according to the impression brands and pouring time (n=10). All of measurements were made with CEREC SW 4.2.3 software (Sirona Dental System, GmbH, Bensheim, Germany) using “distance” tools of the programme. Statistical analysis was performed by using the IBM SPSS Statistics, Version 25 (IBM SPSS Statistics for Windows, IBM Corporation, Armonk, NY). A value of p<0.05 was considered statistically significant. Results: The relationship between different pouring times (1 hour and 24 hours) was not statistically significant (p>0.05). When the paired relations with the master model are evaluated, t test and p values show that there is statistically significant difference (p<0.05). Conclusion: When compared with the main model, PVS materials for both brands show dimensional distortion. For PVS impression materials, the pouring of the impressions does not make any difference.

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Section: Introductionmentioning

confidence: 99%

Model Elde Etme Süresinin Polivinil Siloksan Ölçü Malzemelerinin Boyutsal Doğruluğu Üzerine Etkisi

Özsoy

Najafova

Boyacıoğlu

et al. 2021

Kocaeli Üniversitesi Sağlık Bilimleri Dergisi

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“…Vinyl polysiloxanes (VPS), also called addition curing silicone, are composed of two pastes and have a setting reaction that releases hydrogen in the form of a gas, due to the interaction between the moisture and the residual hydrides in the base polymer and does not result in formation of by-products [16,17,18]. This fact grants these materials superior dimensional stability [18].…”

Section: Introductionmentioning

confidence: 99%

Dimensional Stability of a Preliminary Vinyl Polysiloxane Impression Material

et al. 2019

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Oral rehabilitation success depends upon the accuracy and dimensional stability of the impressions. The purpose of this study is to evaluate the dimensional changes of a first impression type VPS (Vinyl Polysiloxane) (Imprint™ 4 Preliminary Penta™ Super Quick, 3M ESPE™, St Paul, MN, USA). 10 samples were obtained from this silicone with an automatic mixing machine (Pentamix 2, 3M ESPE™, Seefeld, Germany) according to International Organization for Standardization (ISO) 4823:2000 and stored in the IPQ (Portuguese Institute for Quality) for one week. The measurements were performed by laser interferometry, according to the Michelson technique. The dimensional stability was calculated according to the formula specified in ISO (International Organization for Standardization) 4823:2000. A statistical analysis via a one-way repeated measures ANOVA was performed. The material shrinkage was 0.29 ± 0.15% after setting, 0.32 ± 0.21% at 24 h and 0.30 ± 0.23% after 1 week. No significant shrinkage of the silicone under investigation was found over time. This material can be stored for a week without the risk of clinically significant dimensional changes.

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“…Polyether is a rigid hydrophilic material with a high modulus elasticity, but it is more expensive, short working time and setting time and to rigid once it is set. 2,3 Polyvinyl siloxane is a silicone base impression material which has been modified from condensation silicone with poly-dimethyl silicone polymer compound. Addition silicone (Polyvinyl siloxane) does not produce any by product after polymerization reaction.…”

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confidence: 99%

“…The only disadvantage of this material is the inability to contact with latex gloves. 2,3 Polyvinyl siloxane available in some viscosity, from the lowest to the highest which vary the technique of impression. Polyvinyl siloxane impression technique can be categorized into mono-phase (One step technique using one type of viscosity) and dual phase (One or two step using two types of impression materials with different viscosity like putty-wash technique and heavy body-wash technique).…”

mentioning

confidence: 99%

“…Although this two-step technique commonly used and can produce accurate impression result, but there are few problems like dimensional changes, longer chairside time, and more materials needed to make impression. This two-step technique can be divided into two, which are two step without spacer (Escape groove) and with spacer (Polyethylene ) 1,2,3,7 Dimensional accuracy measurement of polyvinyl siloxane is done in 3 dimensions, such as mesiodistal width, abutment height and inter-abutment distance according to ISO no 4823:2015. Measurement can be done using some methods, one of them is using digital instrument.…”

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confidence: 99%

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Dimensional Accuracy of Putty-Wash One-Step and Two-Step Impression Technique in Fabrication of Fixed Partial Denture

Fernando¹,

Syafrinani²,

Nasution³

2019

jemds

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BACKGROUND Impression is crucial step in fabrication of fixed partial denture (FPD). The most common impression technique used in fabrication of fixed partial denture (FPD) is putty-wash impression technique, divided into two, which are one step and two step. Dimensional accuracy of one step and two step putty-wash impression technique is still a controversial. The purpose of this study is to find out the impression results difference of dimensional accuracy, inter abutment distance, abutment height, and mesiodistal width among conventional one step technique, modified one step technique with ethyl vinyl acetate spacer, non-spacer two step technique and two step technique with polyethylene spacer. METHODS The design of this study is laboratory experimental. Samples of this study are dye model from master model imprinted with polyvinyl siloxane putty and wash poured with type IV gypsum. The size of the master model is 28,25 mm for inter abutment distance, 8 mm for abutment height and 6,25 mm for mesiodistal width. 40 samples are divided into four groups, which are conventional one step technique group, modified one step technique with ethyl vinyl acetate spacer group, non-spacer two step technique group and two step technique with polyethylene spacer group. The samples are fabricated at Unit Jasa Industri (UJI) Dental FKG USU, the samples are scanned at Laboratorium Simon Dental Medan and measured with 3D Builder software. The samples are measured according to ISO No. 4823 in three dimension which are inter-abutment distance, abutment height and abutment mesiodistal width. RESULTS Mean and standard deviation for group A is-0,216±0,127%, group B is 0,177 ± 0,11 %, group C is 0,57 ± 0,213 %, and group D is-0,375 ± 0,141%. The mean and standard deviation abutment height for group A is 0,575 ± 0,271%, group B is 0,013±0,26%, group C is 0,55±0,179% and group D is-0,85 ± 0,444%. The mean and standard deviation mesiodistal width for group A is-1,54±0,28%, group B is 0,08±0,173%, group C is-1,168 ± 0,534 % and group D is-0,72 ± 0,513 %. CONCLUSIONS Modified one step technique with ethyl vinyl acetate spacer is the most accurate technique in inter-abutment distance, abutment height and mesiodistal width and the accuracy of that technique had significant difference with other techniques. HOW TO CITE THIS ARTICLE: Fernando, Syafrinani, Nasution I. Dimensional accuracy of putty-wash one-step and two-step impression technique in fabrication of fixed partial denture.

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Dimensional stability of a novel polyvinyl siloxane impression technique

Cited by 10 publications

References 19 publications

Model Elde Etme Süresinin Polivinil Siloksan Ölçü Malzemelerinin Boyutsal Doğruluğu Üzerine Etkisi

Model Elde Etme Süresinin Polivinil Siloksan Ölçü Malzemelerinin Boyutsal Doğruluğu Üzerine Etkisi

Dimensional Stability of a Preliminary Vinyl Polysiloxane Impression Material

Dimensional Accuracy of Putty-Wash One-Step and Two-Step Impression Technique in Fabrication of Fixed Partial Denture

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