Journal article
Impact of silanization of different bioactive glasses in simplified adhesives on degree of conversion, dentin bonding and collagen remineralization
Dental materials, Vol.39(2), pp.217-226
02/01/2023
DOI: 10.1016/j.dental.2023.01.005
PMID: 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 (mu TBS), interface nanoleakage, degree of conversion of ad-hesive, 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 bio-glass Sr-45S5). Adhesives were applied after dentin acid-etching using phosphoric acid at extracted human molars. Resin-dentin sticks were obtained and tested for mu TBS, nano -leakage 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 pTBS, Sr-45S5 and 45S5 presented higher and stable results (p > 0.05). Control (p = 0.018) and Sil-Sr-45S5 (p < 0.001) showed pTBS 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 pTBS (p = 0.028) after 6-months. All experi-mental adhesives exhibited higher degree of conversion compared to Control group, except for 45S5. All adhesives created gap-free interfaces, with very low silver impregnation, ex-cept 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 pTBS, interface nanoleakage and had a negative impact on HYP outcomes.(c) 2023 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.
Details
- Title: Subtitle
- Impact of silanization of different bioactive glasses in simplified adhesives on degree of conversion, dentin bonding and collagen remineralization
- Creators
- Tainah Oliveira Rifane - Paulo Picanco Sch Dent, Fortaleza, BrazilKaren Evellin Moura Cordeiro - Paulo Picanco Sch Dent, Fortaleza, BrazilFrancisbenia Alves Silvestre - Paulo Picanco Sch Dent, Fortaleza, BrazilMarina Trevelin Souza - Universidade Federal de São CarlosEdgar Dutra Zanotto - Universidade Federal de São CarlosVitaliano Gomes Araujo-Neto - Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Piracicaba, SP, BrazilMarcelo Giannini - Universidade Estadual de Campinas (UNICAMP)Salvatore Sauro - Universidad Cardenal Herrera CEUDiego Martins de Paula - Paulo Picanço School of DentistryVictor Pinheiro Feitosa - Paulo Picanco Sch Dent, Fortaleza, Brazil
- Resource Type
- Journal article
- Publication Details
- Dental materials, Vol.39(2), pp.217-226
- Publisher
- Elsevier
- DOI
- 10.1016/j.dental.2023.01.005
- PMID
- 36690502
- ISSN
- 0109-5641
- eISSN
- 1879-0097
- Number of pages
- 10
- Language
- English
- Date published
- 02/01/2023
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654467702771
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