Demineralization around restorations with different restorative materials containing fluoride

Abstract

The aim of this study was to evaluate in vitro the demineralization on tooth/restoration interface of eight restorative materials after demineralization/remineralization cycling. Eighty class V cavities were prepared with margins at enamel and dentin/cementum, and were restored with Fuji II LC, Fuji IX, Ketac-fil, Ketac Molar, Ariston pHc, Compoglass, Degufill Mineral and Z100. After the restorative procedures, the restorations were submitted to demineralization/ remineralization cycling during 14 days. Specimens were embedded in acrylic resin and submitted to serial sectioning. The sections were examined by optical microscope, and demineralization around restoration was measured on cervical and occlusal margins. The data were analyzed using the ANOVA and Tukey test (p<0.05). Glass ionomer cements showed less demineralization on enamel and dentin/restoration interfaces when compared to the tested composite resins (Z100 and Degufill Mineral). In conclusion, glass ionomer cements suffered less demineralization but did not protect completely the tooth/restoration interface

Effect of pH on the Wettability and Fluoride Release of an Ion-releasing Resin Composite

“…28 Overall, independent of the pH values, some studies 29 that evaluated Ariston pHc showed results of inhibition of secondary caries at greater levels than other such products, such as composites, compomers and glass ionomer cements.…”

“…29,35 Several studies 13,29,[36][37][38][39][40] have demonstrated that fluoride interferes with the dynamics involved in the development of caries and could present an anti-microbial effect and provide demineralization inhibition or dental remineralization. 29 Independent of the surface finishing, as displayed in Table 2, Ariston pHc is lightly hydrophilic at a pH of 5.0. This study verified that pH interacts with the material, making ions available on the surface, including fluoride, thus altering the values of the contact angles.…”

Resin Modified Glass Ionomer Cement Sebagai Material Alternatif Restorasi Untuk Gigi Sulung

“…MXPODK LRQ ÀXRU \DQJ GLOHSDVNDQ ROHK hibrid ionomer sedikit lebih rendah DWDX VDPD GHQJDQ MXPODK LRQ ÀXRU yang dilepaskan oleh semen ionomer kaca konvensional. 8,9 3HQHOLWLDQ 1JR mencoba mengamati tingkat penetrasi ÀXRU GDQ 6WURQVLXP NH GDHUDK \DQJ terdemineralisasi. 10 Kemampuan SHOHSDVDQ LRQ ÀXRU LQL GLSHUFD\D PDPSX mencegah perkembangan karies sehingga dapat digunakan untuk gigi sulung.…”

"Influência das ciclagens térmica, mecânica e de pH na resistência de união de sistemas adesivos à dentina de dentes decíduos"

“…Dessa forma, essas metodologias de envelhecimento são auxiliares importantes na tentativa de predizer a longevidade das restaurações (ABO; UNO; SANO, 2004;BEDRAN-DE-CASTRO et al, 2004;ELKINS;MCCOURT, 1993;HOSOYA et al, 1997;NIKAIDO et al, 2002a). O uso da ciclagem de pH é incomum em estudos sobre adesão, contudo extensamente utilizada para avaliar o comportamento de diferentes materiais na inibição do desenvolvimento de lesões de cárie em situações de desafio cariogênico (RODRIGUES, 2003;SEIXAS et al, 2004). Diferentes metodologias são propostas para simular condições de alto risco de cárie (RODRIGUES, 2003;WHITE, 1992).…”

“…O efeito negativo da ciclagem de pH na resistência de união dos sistemas adesivos talvez possa estar relacionado à perda mineral do esmalte nas margens da restauração (SEIXAS et al, 2004), condição que pode magnificar possíveis fendas existentes na interface dente/restauração e, com isso, potencializar os efeitos deletérios da infiltração marginal e redução da resistência adesiva pela degradação da interface de união. Ademais, as tensões geradas pela contração de polimerização da resina composta podem provocar o surgimento de fendas ( gaps) na interface dente-restauração, o que, em última instância, poderia resultar em microinfiltração YOSHIKAWA et al,1999).…”