Estudo comparativo da infiltração marginal em restaurações de classe V

Farias, Débora Gonçalves de; Avelar, Rander Pereira; Bezerra, Ana Cristina Barreto

doi:10.1590/s1517-74912002000100014

Cited by 4 publications

(9 citation statements)

References 3 publications

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“…The advances in the dental material science still generate products with a more effective and lasting adhesive ability. Restorative dentistry has taken advantage from this development since cavity preparation tends to be more conservative, which decreases the marginal leakage and the risk of pulpal injuries 6 , 9 , 25 . However, the new products on the market need suitable evaluation and clinical assessment has been proven to be difficult due to the need for longitudinal studies.…”

Section: Introductionmentioning

confidence: 99%

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Influence of human and bovine substrate on the microleakage of two adhesive systems

Almeida¹,

Scheibe

Oliveira

et al. 2009

J. Appl. Oral Sci.

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The aim of this study was to evaluate in vitro the marginal sealing of two adhesive systems and to analyze the influence of human and bovine substrates on marginal microleakage in enamel. Rectangular-shaped class V cavities (4 mm wide × 2 mm high × 2 mm deep) were made as follows: 8 cavities were prepared on the buccal and lingual surfaces of the human teeth with margins located on enamel and 16 cavities were prepared on the buccal surfaces of the bovine teeth. The cavities were randomly assigned to 4 groups of 8 cavities according to the adhesive system and substrate: G1 - Prime & Bond 2.1 (Dentsply)/human substrate; G2 - Adhese (Ivoclar/Vivadent)/human substrate; G3 - Prime & Bond 2.1 (Dentsply)/bovine substrate; G4 - Adhese (Ivoclar/Vivadent)/bovine substrate. The cavities were filled with microhybrid composite resin (Fillmagic) and after polishing/finishing procedures, the teeth were subjected to a thermocycling regimen of 500 cycles with 1-min immersions in water at 55° ±2°C and 5° ± 2°C. Next, the teeth were coated with two layers of nail polish to within 1 mm of the margin, submerged in a 50% silver nitrate solution for 2 h, rinsed thoroughly in running tap and immersed in developing solution for 8 h. The restorations were bisected resulting in 16 specimens. Microleakage was observed under a stereomicroscope at x25 and recorded using four-point (0-3) scoring system. The data were analyzed statistically by the Mann Whitney U-test at 5% significance level. Leakage was present in all specimens and there was statistically significant difference between the adhesive systems. Adhese self-etching system showed significantly more leakage in both substrates (human - p= 0.0001 and bovine - p= 0.0031). There was no statistically significant difference between human and bovine substrates for either of the adhesive systems based on different bonding mechanisms (Prime & Bond 2.1 - p= 0.6923 and Adhese - p= 0.6109). Neither of the adhesive systems was capable to completely prevent microleakage and the self-etching system was more susceptible to microleakage.

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Section: Introductionmentioning

confidence: 99%

“…In addition, the storage time, age range and the attainment of intact bovine teeth can be controlled 30 . However, different reports have been cited in literature about the applicability of bovine teeth and other substrates, such as swine teeth, in laboratorial trials 1 , 2 , 5 , 6 , 18 , 19 , 20 , 22 .…”

Section: Introductionmentioning

confidence: 99%

Influence of human and bovine substrate on the microleakage of two adhesive systems

Almeida¹,

Scheibe

Oliveira

et al. 2009

J. Appl. Oral Sci.

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“…Académico Médico Quirúrgico [1][2][3][4][5][6][7] para el tratamiento de lesiones de caries. Este método presenta un mecanismo de acción aparentemente similar al de Caridex TM , pero incorpora tres aminoácidos (ácido glutámico, leusina y lisina) los cuales substituyeron al ácido NMAB.…”

Section: Introductionunclassified

“…Las grandes fallas de las restauraciones estéticas continua centrada en los márgenes gingivales localizados en las proximidades de dentina o cemento, donde la adhesividad es más difícil de ser obtenida debido a la compleja estructura dentinaria y la continua exudación de fluidos provenientes de la pulpa (Farias, Avelar, Bezerra) 3 . Para los autores, el sellado de los márgenes cavitarios en gingival utilizando materiales fotoactivados, también se ve comprometido por la contracción de polimerización que sufren, lo cual compartimos para efectos de ésta investigación.…”

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Influencia del uso de Papacarie en el sellado marginal de obturaciones directas

Mejía

Moncada

Alva

et al. 2014

Odontol. sanmarquina

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Influencia del uso de Papacarie en el sellado marginal de obturaciones directasThe influence of Papacarie use on direct restorations marginal seal Resumen El propósito de la investigación fue, comparar el sellado marginal de obturaciones directas, realizadas con la técnica sándwich, después de la remoción de tejido cariado con el gel de papaina (Papacarie) y el método convencional rotatorio. Para lo cual se seleccionaron 20 premolares humanos recientemente extraídos, con lesiones cariosas que comprometían la superficie oclusal y proximal. La muestra fue dividida aleatoriamente en dos grupos: Grupo 1: se hizo la remoción de dentina cariada, mediante la técnica químico mecánica utilizando el gel Papacarie. Grupo 2: remoción de dentina cariada mediante la técnica convencional, con instrumentos rotatorios. Después de la remoción del tejido cariado por ambas técnicas se colocó una restauración directa utilizando la técnica sándwich: colocación de ionómero de vidrio modificado por resina, sistema adhesivo de un solo paso y resina compuesta microhibrida. Posteriormente, después de un proceso de termociclado, los especimenes fueron sometidos a filtración pasiva del colorante azul de metileno, por 3 días, seccionados en sentido mesiodistal a través de la restauración, y observados de acuerdo a grados de filtración del colorante en la interfase diente-obturación tanto en el margen oclusal como el gingival de la preparación, con la ayuda del microscopio estereoscopio. El análisis de los resultados indicaron que: El gel Papacarie permitió la remoción químico mecánica de tejido carioso en la preparación de cavidades para obturación. Sin embargo, influyó significativamente en una mayor frecuencia de filtración de colorante comprometiendo el sellado marginal de las obturaciones, comparado con el método de remoción convencional rotatorio. AbstractThe purpose of the investigation was, to compare the marginal seal of direct restorations, carried out with the sandwich technique, after the removal of decayed tissue by means of papaine gel (Papacarie) and the conventional rotational method. So, 20 recently extracted human premolars were selected, with decay lesions that committed the oclusal and proximal surface. The sample was randomly divided in two groups: Group 1: the removal of decayed dentine was made, by means of the chemo mechanical technique using the gel Papacarie. Group 2: the removal of decayed dentine was made by means of the conventional technique, using rotational instruments. After the removal of decayed tissues by both techniques a direct restoration was placed using the sandwich technique, placement of glass ionomer modified by resin, adhesive system of a single step and micro hybrid composite resin. Then, after term cycling process, the specimens were subjected to passive filtration of blue methylene dye, for 3 days, cut through the mesiodistal way, and observed by stereoscopic microscope, according to degrees of blue methylene dye filtration at toothrestoration interface, in oclusal and gingival margins of the pr...

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“…A infiltração marginal pode estar relacionada a alguns fatores como ao fator-C (fator de configuração cavitária) 10 , à contração de polimerização do material 14,21,52 , como também, à resistência do material à biodegradação 64 na interface dente/restauração 53 As diferenças dos coeficientes de expansão térmica e do módulo de elasticidade entre o tecido dentário e os materiais restauradores, além da contração de polimerização interferem no processo de microinfiltração 52 . Os novos materiais restauradores associados ao condicionamento ácido prévio do esmalte e da dentina e, às técnicas consideradas adesivas, ainda não proporcionam um perfeito selamento e vedamento marginal, mesmo os com capacidade de aderir quimicamente aos tecidos dentários, como os CIV convencionais que não apresentam contração de polimerização 11 .…”

Section: Microinfiltraçãounclassified

Efeito da ciclagem de pH na liberação/recarga de flúor e na microinfiltração de materiais restauradores resinosos

Garcez¹

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Estudo comparativo da infiltração marginal em restaurações de classe V

Cited by 4 publications

References 3 publications

Influence of human and bovine substrate on the microleakage of two adhesive systems

Influence of human and bovine substrate on the microleakage of two adhesive systems

Influencia del uso de Papacarie en el sellado marginal de obturaciones directas

Efeito da ciclagem de pH na liberação/recarga de flúor e na microinfiltração de materiais restauradores resinosos

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