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Impact of silanization of different bioactive glasses in simplified adhesives on degree of conversion, dentin bonding and collagen remineralization.
Rifane, Tainah Oliveira; Cordeiro, Karen Evellin Moura; Silvestre, Francisbênia Alves; Souza, Marina Trevelin; Zanotto, Edgar Dutra; Araújo-Neto, Vitaliano Gomes; Giannini, Marcelo; Sauro, Salvatore; de Paula, Diego Martins; Feitosa, Victor Pinheiro.
Afiliación
  • Rifane TO; Paulo Picanço School of Dentistry, Fortaleza, Brazil. Electronic address: tainah08@gmail.com.
  • Cordeiro KEM; Paulo Picanço School of Dentistry, Fortaleza, Brazil. Electronic address: karenem@facpp.edu.br.
  • Silvestre FA; Paulo Picanço School of Dentistry, Fortaleza, Brazil. Electronic address: Beninha00@hotmail.com.
  • Souza MT; Vitreous Materials Laboratory (LAMAV), Department of Materials Engineering, Federal University of São Carlos, São Carlos, Brazil. Electronic address: Marina.trevelin@gmail.com.
  • Zanotto ED; Vitreous Materials Laboratory (LAMAV), Department of Materials Engineering, Federal University of São Carlos, São Carlos, Brazil. Electronic address: dedz@ufscar.br.
  • Araújo-Neto VG; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil. Electronic address: vitalianoganeto@gmail.com.
  • Giannini M; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil. Electronic address: gianinni@unicamp.br.
  • Sauro S; Department of Biomaterials and Minimally Invasive Dentistry, Cardenal Herreara CEU University, Valencia, Spain. Electronic address: salvatore.sauro@uchceu.es.
  • de Paula DM; Paulo Picanço School of Dentistry, Fortaleza, Brazil. Electronic address: diego.martins@facpp.edu.br.
  • Feitosa VP; Paulo Picanço School of Dentistry, Fortaleza, Brazil. Electronic address: victorpfeitosa@hotmail.com.
Dent Mater ; 39(2): 217-226, 2023 02.
Article en En | MEDLINE | ID: mdl-36690502
ABSTRACT

OBJECTIVE:

To analyze simplified adhesive containing pure or silanized bioglass 45S5 (with calcium) or Sr-45S5 (strontium-substituted) fillers applied on dentin and to evaluate the microtensile bond strength (µTBS), interface nanoleakage, degree of conversion of adhesive, collagen degradation and remineralization.

METHODS:

Ambar Universal adhesive (FGM) was doped with 10 wt% bioactive glasses to form following groups Control (no bioglass), 45S5 (conventional bioglass 45S5), Sr-45S5 (Sr-substituted bioglass 45S5), Sil-45S5 (silanized bioglass 45S5) and Sil-Sr-45S5 (silanized bioglass Sr-45S5). Adhesives were applied after dentin acid-etching using phosphoric acid at extracted human molars. Resin-dentin sticks were obtained and tested for µTBS, nanoleakage at 24 h or 6 months. Degree of conversion was measured using micro-Raman spectroscopy. Dentin remineralization was assessed by FTIR after 6-month storage in PBS. Hydroxyproline (HYP) release was surveyed by UV-Vis spectroscopy. Statistical analysis was performed using ANOVA and Tukey's test (p < 0.05).

RESULTS:

Regarding µTBS, Sr-45S5 and 45S5 presented higher and stable results (p > 0.05). Control (p = 0.018) and Sil-Sr-45S5 (p < 0.001) showed µTBS reduction after 6-month aging. Sil-Sr-45S5 showed higher HYP release than that obtained in the 45S5 group. Sil-45S5 showed mineral deposition and increase in µTBS (p = 0.028) after 6-months. All experimental adhesives exhibited higher degree of conversion compared to Control group, except for 45S5. All adhesives created gap-free interfaces, with very low silver impregnation, except for Sil-Sr-45S5.

SIGNIFICANCE:

The incorporation of silanized 45S5 bioglass into the universal adhesive was advantageous in terms of dentin remineralization, bonding performance and adhesive polymerization. Conversely, Sil-Sr-45S5 compromised the µTBS, interface nanoleakage and had a negative impact on HYP outcomes.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Recubrimiento Dental Adhesivo / Cementos Dentales Límite: Humans Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Recubrimiento Dental Adhesivo / Cementos Dentales Límite: Humans Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2023 Tipo del documento: Article