Effects of the Solvent Evaporation Technique on the Degree of Conversion of One-Bottle Adhesive Systems

Giannini, Marcelo; Arrais, César Augusto Galvão; Vermelho, Paulo Moreira; Reis, Rodrigo S.; Santos, Luís Presley Serejo dos; Leite, Edson Roberto

doi:10.2341/07-54

Cited by 40 publications

(26 citation statements)

References 24 publications

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“…It has been shown that the extended passive solvent volatilization that occurs when adhesive systems are left undisturbed for 60 seconds with or without posterior air-drying for 10 seconds before photoactivation may increase the DC of some commercially available adhesive systems. 12 However, little is known about the DC of contemporary adhesive systems with respect to whether an extended airactivated drying mode to volatilize the solvent should be performed before curing. Thus, this study aimed to evaluate the DC of commercially available adhesive systems when photo-activated after extended air-activated or passive methods of solvent volatilization.…”

Section: Introductionmentioning

confidence: 99%

Degree of Conversion of Simplified Contemporary Adhesive Systems as Influenced by Extended Air-Activated or Passive Solvent Volatilization Modes

Borges¹,

Souza-Junior²,

Brandt³

et al. 2012

Operative Dentistry

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Active air-drying for 60 seconds to volatilize solvents can be necessary to increase the degree of conversion of some adhesive systems, which might be related to improved clinical performance. SUMMARYThis study evaluated the effect of five methods of solvent volatilization on the degree of conversion (DC) of nine one-bottle adhesive systems using Fourier transform infrared/ attenuated total reflectance (FTIR/ATR) analysis. Nine adhesives were tested: Adper Single

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Section: Introductionmentioning

confidence: 99%

Degree of Conversion of Simplified Contemporary Adhesive Systems as Influenced by Extended Air-Activated or Passive Solvent Volatilization Modes

Borges¹,

Souza-Junior²,

Brandt³

et al. 2012

Operative Dentistry

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“…Acetone is used frequently as a solvent because it can efficiently remove water from surfaces 25,26,28) . By adding 10% acetone to water, the vapor-pressure increases by more than 300%, leading to volatilization of some of the surface water 29) . 대한치과보존학회지: Vol.…”

Section: ⅳ Discussionmentioning

confidence: 99%

Effect of an intermediate bonding resin and flowable resin on the compatibility of two-step total etching adhesives with a self-curing composite resin

Choi

Yum

Kim

et al. 2009

J Korean Acad Conserv Dent

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The remarkable evolution of contemporary dentin adhesive systems has focused on simplifying the clinical steps. Factors, such as time and simplification of the clinical steps have led to the increased use of simplified-step adhesives in association with resin materials.Conventional (three-step) and simplified-step adhesive systems are currently available for etch and rinse systems. The bonding protocol of three-step systems requires separate acid-etching of the enamel and dentin surfaces, the application of a primer containing hydrophilic resin and solvents to etched dentin, and the subsequent application of an adhesive containing resin monomers to both enamel and dentin 1) . However, in order to simplify the bonding protocol, manufacturers have attempted to produce several one-bottle dentin bonding systems that combine the primer and adhesive resin in a single solution.Simplified-step adhesive systems have replaced their predecessors in most clinical applications because of their reported versatility, ease of use and time-saving protocols. Most of these products are composed of hydrophilic and hydrophobic resins dissolved in a high vapor pressure organic solvent, such as ethanol or acetone, which chase the water and bring the monomers into intimate contact with the exposed collagen fibers 2) . These adhesive systems This study compared the effect of an activator, intermediate bonding resin and low-viscosity flowable resin on the microtensile bond strength of a self-curing composite resin used with two-step total etching adhesives. Twenty extracted permanent molars were used. The teeth were assigned randomly to nine groups (n=10) according to the adhesive system and application of additional methods (activator, intermediate adhesive, flowable resin). The bonding agents and additional applications of each group were applied to the dentin surfaces. Self-curing composite resin buildups were made for each tooth to form a core, 5mm in height. The restored teeth were then stored in distilled water at room temperature for 24h before sectioning. The microtensile bond strength of all specimens was examined. The data was analyzed statistically by one-way ANOVA and a Scheffe' s test. The application of an intermediate bonding resin (Optibond FL adhesive) and low-viscosity flowable resin (Tetric N-flow) produced higher bond strength than that with the activator in all groups. Regardless of the method selected, Optibond solo plus produced the lowest μ TBS to dentin. The failure modes of the tested dentin bonding agents were mostly adhesive failure but there were some cases showed cohesive failure in the resin.

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“…Dentre esses componentes, os solventes utilizados têm importância fundamental, pois auxiliam no deslocamento das moléculas de água, permitindo a maior penetração dos monômeros hidrofílicos. Por outro lado, características químicas desses solventes, como a volatilidade, acabam por requerer maiores cuidados durante a manipulação e o armazenamento dos frascos de adesivo (ABATE; RODRÍGUEZ; MACCHI, 2000;GIANNINI et al, 2008;KLEIN JR et al, 2008). Além da água, que pode ser utilizada como solvente inorgânico, os principais solventes orgânicos utilizados são acetona, etanol e uma associação de etanol e água (NUNES; SWIFT JR; PERDIGÃO, 2001).…”

Section: Introductionunclassified

Influência do tempo de abertura dos frascos de sistemas adesivos na microinfiltração marginal em restaurações de resina composta

Lago

Bezerra

2009

cmbio

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ResumoO objetivo deste estudo in vitro foi avaliar a influência da abertura dos frascos de sistemas adesivos na microinfiltração marginal em restaurações de resina composta. Quatro frascos de cada sistema adesivo, Prime & Bond NT (PBNT), Dentsply (à base de acetona) e Adper Single Bond 2 (SB2), 3M ESPE (à base de etanol/água), foram abertos diariamente (8 vezes por 15 segundos). Cento e doze cavidades classe V, preparadas na junção cemento-esmalte das faces vestibular e lingual de terceiros molares humanos, foram divididas em oitos grupos: G1 (PBNT) e G2 (SB2), nenhum dia de abertura; G3 (PBNT) e G4 (SB2), 30 dias de abertura; G5 (PBNT) e G6 (SB2), 60 dias de abertura; G7 (PBNT) e G8 (SB2), 90 dias de abertura. As cavidades foram restauradas com resina composta e, após acabamento, polimento e termociclagem, os dentes foram imersos em corante. Cada restauração foi seccionada no sentido vestíbulo-lingual em três cortes, analisados sob lupa estereoscópica. Os resultados foram avaliados estatisticamente através de ANOVA e pelos testes de Tukey e T de Student. Não houve diferença estatisticamente significante entre os grupos, considerando o tempo de abertura dos frascos de adesivos. A microinfiltração foi maior em dentina do que em esmalte (p<0,05). Não houve diferença estatisticamente significante entre os sistemas adesivos quanto à capacidade de selamento e nível de microinfiltração. Pôde-se concluir que a abertura dos frascos de adesivo não promoveu um aumento da microinfiltração nas restaurações de resina composta.

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Effects of the Solvent Evaporation Technique on the Degree of Conversion of One-Bottle Adhesive Systems

Abstract: Clinical RelevanceSince methods of solvent evaporation can change the degree of conversion for some adhesives, practitioners should be aware of the type and composition of bonding agents used.

Cited by 40 publications

References 24 publications

Degree of Conversion of Simplified Contemporary Adhesive Systems as Influenced by Extended Air-Activated or Passive Solvent Volatilization Modes

Degree of Conversion of Simplified Contemporary Adhesive Systems as Influenced by Extended Air-Activated or Passive Solvent Volatilization Modes

Effect of an intermediate bonding resin and flowable resin on the compatibility of two-step total etching adhesives with a self-curing composite resin

Influência do tempo de abertura dos frascos de sistemas adesivos na microinfiltração marginal em restaurações de resina composta

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