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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Potential tooth staining due to root canal sealers containing bismuth oxide and formaldehyde

Autor(es):
Marciano, Marina Angelica [1] ; Camilleri, Josette [2] ; Lia Mondelli, Rafael Francisco [1] ; Amoroso, Pablo Andres [1] ; Cavenago, Bruno Cavalini [1] ; Perochena, Aldo del Carpio [1] ; Hungaro Duarte, Marco Antonio [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Restorat Dent Dent Mat & Endodont, Fac Dent Surg, Sao Paulo - Brazil
[2] Univ Malta, Dept Restorat Dent, Msida - Malta
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: ENDO-ENDODONTIC PRACTICE TODAY; v. 9, n. 1, p. 39-45, SPR 2015.
Citações Web of Science: 0
Resumo

Aim: To evaluate potential tooth colour alteration effect of five root canal sealers using a bovine tooth model and the interaction of formaldehyde with bismuth compounds. Materials and methods: A preliminary test was performed to assess the interaction of bismuth oxide in contact with formaldehyde. Seventy bovine teeth were sectioned into blocks and cavities were created. Each cavity was filled with either: AH Plus, Acroseal, MTA Fillapex, Sealer 26, Endofill and then sealed with composite. Triple antibiotic paste and unfilled samples were used as the positive and negative controls, respectively. All the specimens were immersed in water. The colour was assessed with a spectrophotometer at different intervals: immediately after filling, 24 h, 15 days and 30 days after filling. The colour change and the luminosity were calculated. The statistical analysis was performed using non-parametric Kruskal-Wallis and Dunn test (P < 0.05). Results: The bismuth oxide in contact with formaldehyde exhibited a black colour. All the sealers caused tooth colour alteration after the evaluated periods, with grey staining and low luminosity values observed with Sealer 26 samples. Conclusions: All the evaluated sealers caused tooth colour alteration. The tooth staining was visually detected for Sealer 26 and might be associated with the formaldehyde released and its interaction with the radiopacifier bismuth oxide. (AU)

Processo FAPESP: 11/13573-3 - Propriedades físico-químicas e biológicas de cimento obturador experimental à base de Portland associado a diferentes radiopacificadores
Beneficiário:Marina Angélica Marciano da Silva
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 13/04054-8 - Análise da microestrutura e da interface de cimentos à base de silicato de cálcio contendo diferentes radiopacificadores
Beneficiário:Marina Angélica Marciano da Silva
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado