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Analysis of pH, calcium ion release, and energy dispersive spectroscopy of a bioceramic root canal dressing
Capitanio, Bárbara Luzia; Hashizume, Lina Naomi; Kuga, Milton Carlos; Oliveira, Eliane Cristina Gulin de; Rosa, Ricardo Abreu da; Só, Gabriel Barcelos; Só, Marcus Vinicius Reis.
  • Capitanio, Bárbara Luzia; Federal University of Rio Grande do Sul. School of Dentistry, Department of Conservative Dentistry. Porto Alegre. BR
  • Hashizume, Lina Naomi; Federal University of Rio Grande do Sul. School of Dentistry, Department of Conservative Dentistry. Porto Alegre. BR
  • Kuga, Milton Carlos; São Paulo State University. School of Dentistry, Department of Restorative Dentistry. Araraquara. BR
  • Oliveira, Eliane Cristina Gulin de; São Paulo State University. School of Dentistry, Department of Restorative Dentistry. Araraquara. BR
  • Rosa, Ricardo Abreu da; Federal University of Rio Grande do Sul. School of Dentistry, Department of Conservative Dentistry. Porto Alegre. BR
  • Só, Gabriel Barcelos; Federal University of Rio Grande do Sul. School of Dentistry, Department of Conservative Dentistry. Porto Alegre. BR
  • Só, Marcus Vinicius Reis; Federal University of Rio Grande do Sul. School of Dentistry, Department of Conservative Dentistry. Porto Alegre. BR
Braz. dent. j ; 34(4): 54-61, July-Aug. 2023. tab, graf
Article Dans Anglais | LILACS-Express | LILACS, BBO | ID: biblio-1520342
ABSTRACT
Abstract This study compared the pH and calcium ion release of calcium silicate- (Bio-C Temp) and calcium hydroxide-based (Ultracal XS) medications. Intracanal remnants of both medications were also evaluated using SEM-EDS after the removal protocol. Thirty-five bovine teeth were prepared. Fifteen were filled with Bio-C Temp and 15 with Ultracal XS. Five remained without intracanal medication (control group). Five samples from each experimental time (i.e.. 24, 72, and 168 hours) were used to measure pH and calcium ions release using a digital pH meter and microplate reader, respectively. Afterward, the peaks of the chemical elements composing both medications were analyzed in SEM-EDS. One-way ANOVA and Tukey's post hoc test analyzed the pH and calcium ion release data. Student's t-test compared the medications in each experimental time. SEM-EDS described the percentage of chemical elements in the samples. Bio-C Temp and Ultracal XS showed a significant pH increase from 24 to 168 hours (p<0.05). Ultracal XS showed a higher pH value at 24 hours than Bio-C Temp (p<0.05) but were similar at 72 and 168h (p > 0.05). Calcium ion release did not depend on the experimental period (p > 0.05). Bio-C Temp showed lower calcium ions release than Ultracal XS at 24 hours (p<0.05). SEM-EDS analyses showed the remains of both medications, but the concentration of Si, Al, and W ions was present only in the calcium silicate-based medication. Bio-C Temp presented alkaline pH and a satisfactory calcium ion release over the time. The remaining of both medications were present after the protocols for paste removal.
RESUMO
Resumo Este estudo comparou o pH e a liberação de íons cálcio de medicações intracanais a à base de silicato de cálcio (Bio-C Temp) e à base de hidróxido de cálcio (Ultracal XS). Remanescentes de ambas as medicações também foram avaliados usando microscopia eletrônica de varredura e espectroscopia de dispersão de energia após o protocolo de remoção. Trinta e cinco dentes bovinos foram preparados. Quinze dentes foram preenchidos com Bio-C Temp e 15 com Ultracal XS. Cinco permaneceram sem medicação intracanal (grupo controle). Cinco amostras de cada tempo experimental (ou seja, 24, 72 e 168 horas) foram usadas para medir o pH e a liberação de íons de cálcio usando um medidor de pH digital e um leitor de microplacas, respectivamente. Em seguida, os picos dos elementos químicos que compõem os dois medicamentos foram analisados ​​em microscopia eletrônica de varredura e por espectroscopia de dispersão de energia. Os testes One-way ANOVA e post hoc de Tukey analisaram os dados de pH e liberação de íons cálcio. O teste t de Student comparou as medicações em cada tempo experimental. A microscopia eletrônica de varredura e a espectroscopia de dispersão de energia descreveu a porcentagem de elementos químicos nas amostras. O Bio-C Temp e o Ultracal XS mostraram um aumento significativo de pH de 24 a 168 horas (p<0,05). O Ultracal XS apresentou um valor de pH mais alto em 24 horas do que o Bio-C Temp (p<0,05), mas foi semelhante em 72 e 168h (p > 0,05). A liberação de íons cálcio não dependeu do período experimental (p> 0,05). O Bio-C Temp apresentou menor liberação de íons de cálcio do que Ultracal XS em 24 horas (p<0,05). As análises de microscopia eletrônica de varredura e espectroscopia de dispersão de energia mostraram remanescentes de ambas as medicações, mas a concentração de íons Si, Al e W estavam presentes apenas na medicação à base de silicato de cálcio. O Bio-C Temp apresentou pH alcalino e maior liberação de íons cálcio. Remanescentes de ambas as medicações estiveram presentes após os protocolos de remoção da pasta.


Texte intégral: Disponible Indice: LILAS (Amériques) langue: Anglais Texte intégral: Braz. dent. j Thème du journal: Dentisterie Année: 2023 Type: Article Pays d'affiliation: Brésil Institution/Pays d'affiliation: Federal University of Rio Grande do Sul/BR / São Paulo State University/BR

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Texte intégral: Disponible Indice: LILAS (Amériques) langue: Anglais Texte intégral: Braz. dent. j Thème du journal: Dentisterie Année: 2023 Type: Article Pays d'affiliation: Brésil Institution/Pays d'affiliation: Federal University of Rio Grande do Sul/BR / São Paulo State University/BR