In vitro quantitative evaluation of marginal microleakage in class II restorations confected with a glass ionomer cement and two composite resins

Bijella, Maria Fernanda Borro; Bijella, Maria Francisca Thereza Borro; Silva, Salete Moura Bonifácio da

doi:10.1590/s1517-74912001000400002

Cited by 5 publications

(8 citation statements)

References 6 publications

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“…Various microleakage studies that compared thermocycled and non-thermocycled groups 3,6,21,27,28 and also the different numbers of cycles 8,25 observed no statistically significant difference. These results suggest that the thermocycling method does not influence the microleakage of resin composite restorations.…”

Section: Discussionmentioning

confidence: 95%

Effect of the number of thermocycles on microleakage of resin composite restorations

Pazinatto¹,

Campos

Costa³

et al. 2003

Pesqui. Odontol. Bras.

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Thermocycling simulates, in vitro, thermal changes that occur in the oral cavity. The aim of this study was to evaluate the influence of the number of cycles on microleakage. Class V cavities (1.5 mm deep, 3 mm in height and 3 mm in width) were prepared in bovine teeth, restored with a Single Bond/Z250 restorative system (3M/ESPE) and then divided into five groups of ten teeth each: group 1 was not thermocycled (control group), and groups 2, 3, 4 and 5 were thermocycled 500, 1,000, 2,500 and 5,000 times, respectively (5 degrees -55 degrees +/- 2 degrees C, 15 s dwell time). The teeth were immersed in 0.5% basic fuchsin aqueous solution for 24 h, sectioned and the sections with the highest degree of microleakage were selected, scanned and the extent of dye penetration was measured by the ImageTool program. The results submitted to one-way ANOVA showed no significant differences between the groups (p > 0.05). The averages of microleakage values in millimeters were: group 1 (3.92); group 2 (3.13); group 3 (4.48); group 4 (4.33) and group 5 (3.42). Thus, it was concluded that there is no relation between the increase of the number of cycles and the increase in microleakage.

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Section: Discussionmentioning

confidence: 95%

Effect of the number of thermocycles on microleakage of resin composite restorations

Pazinatto¹,

Campos

Costa³

et al. 2003

Pesqui. Odontol. Bras.

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“…Ao contrário de estudos anteriores [7][8][9][10] , no presente estudo nenhum procedimento de ciclagem térmica foi realizado já que, com base nas pesquisas de Doerr et al 14 e de Bijella et al 15 foi verificado que a realização deste procedimento não interfere no grau de microinfiltração ao redor das restaurações de CIV, fato possivelmente relacionado à semelhança entre seu coeficiente de expansão térmica com o da estrutura dental, que o permite se expandir e contrair mediante as oscilações térmicas na mesma proporção que o dente 3 . Do mesmo modo, a maior parte das pesquisas prévias foi realizada ou em dentes permanentes 8,10,15 ou em dentes bovinos 17 , havendo poucos estudos realizados em dentes decíduos 9 . Castro e Feigal 11 verificaram que restaurações de CIV realizadas em dentes permanentes apresentaram maior grau de microinfiltração que aquelas realizadas em dentes decíduos.…”

Section: Comparações Entre Os Gruposunclassified

Estudo Comparativo da Microinfiltração Marginal em Cavidades Classe II Restauradas com Cimentos de Ionômero de Vidro Convencionais e Resinosos

CAJAZEIRA¹

2008

Pesq Bras Odontoped Clin Integr

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Infiltração dentária; Cimentos de ionômero de vidro; Dentes decíduos. Dental leakage; Glass ionomer cements; Primary teeth. Marginal Microleakage in Class II Cavities Restored with Conventional and Resin-Modified Glass Ionomer Cements: a Comparative Study Objective: To evaluate the level of microleakage in class II cavities prepared in human primary molars restored with 2 conventional (Maxxion R and Vidrion R) and 2 resin-modified (Vitremer and Vitro Fill LC) glass ionomer cements. Method: Nineteen human primary molars were chosen from a tooth bank. Class II cavities with standardized dimensions were prepared with cylindrical diamond burs on the mesial and distal surfaces of each tooth. The cavities were then restored with 2 conventional glass ionomer cements [Maxxion R (G1) and Vidrion R (G2)] and 2 resin-modified glass ionomer cements [Vitremer (G3) and Vitro Fill LC (G4)]. The restored teeth were coated with 2 layers of nail polish (Colorama ®) and, after drying of the polish, the teeth were immersed in a 50% silver nitrate solution for 24 hours. Next, all teeth were cut longitudinally through the restoration center and examined with a stereomicroscope and the microleakage was evaluated by qualitative criteria based on the attribution of scores. Results: All materials presented varied microleakage levels, but Vitremer (G3) presented the best results. No statistically significant differences were observed among Maxxion R (G1), Vidrion R (G2) and Vitro Fill LC (G4). Conclusion: None of the tested glass ionomer cements was capable to completely prevent microleakage occurrence, but Vitremer presented the lowest microleakage scores, while the Maxxion R, Vidrion R and Vitro Fill LC did not differ significantly from each other.

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“…A eleição de segundos molares decíduos para composição da amostra deveu-se à escassez de trabalhos com esses dentes na literatura 14,18,42,61,65,66,86,95 , a qual é rica em trabalhos com dentes permanentes 2,8,16,17,20,27,46,67,69,72,80,88,90,104 . Vários autores afirmam que utilizar resultados de testes de microinfiltração em dentes permanentes para dentes decíduos, poderia mascarar o verdadeiro resultado da pesquisa 36,93 .…”

Section: Discussão Discussão 59unclassified

“…A maioria das variações é referente às técnicas restauradoras 6,14,21,27,34,37,44,50,57,61,65,68,69,77,80,86,92,95,103 , aos tipos de preparo cavitário 14,21,34,39,63,65,66,95 , tipos de corante utilizado 1,8,14,21,31,34,39,42,61,64,65,68,77,86 , tempo de armazenamento dos corpos de prova 8,42,68,69,86 , forma de seccionamento dos espécimes 8,20,31,33,42,…”

Section: Metodologiaunclassified

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Avaliação 'in vitro' da infiltração marginal de restaurações indiretas com resina composta em molares decíduos cimentadas com dois tipos de cimentos

Oliveira¹

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In vitro quantitative evaluation of marginal microleakage in class II restorations confected with a glass ionomer cement and two composite resins

Cited by 5 publications

References 6 publications

Effect of the number of thermocycles on microleakage of resin composite restorations

Effect of the number of thermocycles on microleakage of resin composite restorations

Estudo Comparativo da Microinfiltração Marginal em Cavidades Classe II Restauradas com Cimentos de Ionômero de Vidro Convencionais e Resinosos

Avaliação 'in vitro' da infiltração marginal de restaurações indiretas com resina composta em molares decíduos cimentadas com dois tipos de cimentos

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