3D evaluation of the effect of disinfectants on dimensional accuracy and stability of two elastomeric impression materials

Soğancı, Gökçe; Cinar, Duygu; Çağlar, Alper; Yagiz, Ayberk

doi:10.4012/dmj.2017-097

Cited by 26 publications

(23 citation statements)

References 42 publications

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“…O silicone de adição apresenta uma boa estabilidade dimensional, porém demonstra uma natureza hidrofóbica, devendo ser utilizada em condição seca para menor alteração dimensional (Silva et al, 2016). Além disso, devido à alta estabilidade dimensional, as moldagens com este material podem ser vazadas mais de uma vez (Soganci et al, 2018). Essa característica permitiu a realização da técnica de troquelização, empregada neste estudo, por meio de duplo vazamento.…”

Section: Resultsunclassified

Restaurações indiretas em resina composta em cavidades com diferentes profundidades: Relato de caso

Lira

Dutra

Costa

et al. 2021

RSD

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Restaurações indiretas em resina composta são comumente usadas em dentes posteriores nas diferentes cavidades, permitindo maior resistência ao desgaste, adaptação marginal, estabelecimento de contatos proximais e maior dureza, uma vez que passam pelo processo de termopolimerização. O objetivo desse estudo é relatar um caso clínico de substituição de restaurações em amálgama por restaurações indiretas em resina composta em cavidades com diferentes profundidades. Paciente, sexo feminino, 34 anos, procurou a clínica odontológica de uma instituição privada, queixando-se de insatisfação estética nas restaurações em amálgama nos dentes 45, 46 e 47. Após exame clínico, devido à extensão das cavidades, foi sugerido a realização de restaurações indiretas em resina composta nos três elementos. Após a remoção do amalgama, com ponta diamantada, avaliou-se as profundidades das cavidades dos dentes. No dente 45, realizou-se tratamento endodôntico e instalação de pino de fibra de vidro. No dente 46 foi realizado um capeamento pulpar indireto e no dente 47 não foi realizado nenhum tratamento de proteção pulpar. Posteriormente, os dentes foram preparados para restaurações indiretas com ponta diamantada #3131, em seguida, foram moldados com silicone de adição, prosseguindo com vazamento do molde com gesso tipo IV. O modelo foi troquelizado pela técnica de duplo vazamento e as restaurações em resina composta foram confeccionadas sobre o modelo. Na sessão seguinte, as restaurações foram cimentadas com cimento resinoso dual autoadesivo. Por fim, foi realizado o ajuste oclusal, seguido do acabamento e polimento. As terapêuticas empregadas foram eficazes para recuperar a forma anatômica e estética dos elementos dentários envolvidos.

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Section: Resultsunclassified

Restaurações indiretas em resina composta em cavidades com diferentes profundidades: Relato de caso

Lira

Dutra

Costa

et al. 2021

RSD

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“…Further clinical studies need to be carried out to stimulate oral environment. [14] According to a study conducted by Godbole, the effect of ultraviolet (UV) radiation on dimensional stability of vinyl polysiloxane materials was not significant. Before and after disinfection with UV light, there was no difference in dimensional stability of impression.…”

Section: Siliconesmentioning

confidence: 99%

Interocclusal recording materials: A review

Pai¹,

Gopan²,

Ramachandra³

et al. 2019

jcri

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To achieve a successful prosthesis, it is important to achieve harmony between the maxillomandibular relationships. This does not pertain only to the opening or closing but is a complex relationship which exists in three dimensions. Hence, it is very important to record this relationship with the least possible error to obtain a successful prosthesis. To record this maxillomandibular relationship, numerous materials are in use and what matters are the precision of the recording materials and their stability. This article seeks to present a review of major bite registration materials and their modification as well as their advantages and disadvantages.

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“…1 Vinylpoly siloxane (VPS) material is considered the material of choice along with polyethers (PEs) due to its excellent elastic recovery, working, and setting times, tear resistance, and marginal accuracy. [2][3][4] However, VPS is hydrophobic and its ability to wet the prepared tooth surface for accurate impressions is compromised by the presence of moisture and saliva. 5 A further limitation of these impression materials is their poor compatibility with other dental materials, including dental acrylate resins, composite resin, retraction and hemostatic agents, and latex.…”

Section: Introductionmentioning

confidence: 99%

Effect of contemporary retraction agents and cleaning with hydrogen peroxide on the polymerization of elastomeric impression materials

Vohra

Altokhais

Thafrah

et al. 2020

Journal of Applied Biomaterials & Functional Materials

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The aim of the study is to investigate the polymerization inhibition of elastomeric impression materials vinylpoly siloxane (VPS) and polyether (PE) when used in combination with retraction materials with and without subsequent cleaning with hydrogen peroxide (H2O2). Methods: Seven stainless steel specimens were fabricated. Four hundred and twenty impressions were made with three different elastomeric materials (140 each) as follows: group 1: VPS-Panasil; group 2: VPS-Express; group 3: PE-Monophase. Each material group was further subdivided into seven subgroups, based on use of no retraction material (control), three different retraction materials [Retraction capsule (RC3M), Dryz, Expasyl], and two cleaning techniques (water and H2O2). All subgroups included 20 impressions, which were made by a single operator using an automix gun. Evaluations were made using a visual scale by three calibrated examiners blindly and independently. Subjective categorization of the impressions were made as inhibited and uninhibited. Data were analyzed using Fisher’s exact test and significance was set at p < 0.05. Results: Inhibited impressions were lower than uninhibited impressions among VPS materials (Panasil and Express); Panasil and Express showed comparable ( p > 0.05) impression retardation. PE showed significantly higher inhibition compared to VPS materials ( p < 0.05). Expasyl showed significantly higher polymerization inhibition than other retraction materials ( p < 0.05). The use of H2O2 for cleaning showed significant reduction in polymerization inhibition than cleaning with water for Expasyl ( p < 0.05). Conclusion: Overall contemporary retraction materials showed low potential for polymerization inhibition of elastomeric impression materials. Expasyl should be cleaned with H2O2 prior to impression making. However, Dryz and RC3M can show accurate impressions with water cleaning alone.

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3D evaluation of the effect of disinfectants on dimensional accuracy and stability of two elastomeric impression materials

Cited by 26 publications

References 42 publications

Restaurações indiretas em resina composta em cavidades com diferentes profundidades: Relato de caso

Restaurações indiretas em resina composta em cavidades com diferentes profundidades: Relato de caso

Interocclusal recording materials: A review

Effect of contemporary retraction agents and cleaning with hydrogen peroxide on the polymerization of elastomeric impression materials

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