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Dentine Mineral Changes Induced by Polyalkenoate Cements after Different Selective Caries Removal Techniques: An in vitro Study.
Pires, Paula Maciel; Nunes Monteiro, Amanda Souza; Helena de Accioly Costa, Paula; Silva, Aline Saddock; Lopes, Ricardo Tadeu; Yoshihara, Kumiko; Sauro, Salvatore; de Almeida Neves, Aline.
Afiliación
  • Pires PM; Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil, paulinha_pmp@hotmail.com.
  • Nunes Monteiro AS; Dental Biomaterials & Minimally Invasive Dentistry, Department of Dentistry, University CEU Cardenal Herrera, Valencia, Spain, paulinha_pmp@hotmail.com.
  • Helena de Accioly Costa P; Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
  • Silva AS; Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
  • Lopes RT; Laboratory of Nuclear Instrumentation, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
  • Yoshihara K; Laboratory of Nuclear Instrumentation, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
  • Sauro S; National Institute of Advanced Industrial Science and Technology (AIST), Health Research Institute, Okayama, Japan.
  • de Almeida Neves A; Dental Biomaterials & Minimally Invasive Dentistry, Department of Dentistry, University CEU Cardenal Herrera, Valencia, Spain.
Caries Res ; 57(1): 21-31, 2023.
Article en En | MEDLINE | ID: mdl-36642070
This study aimed at evaluating the mineral variation induced by polyalkenoate cements in residual dentine after different caries removal methods. Ten extracted sound molars were selected, and five cavities were prepared on the occlusal surface of each specimen. Carious lesions were generated using a microbial protocol, while the caries removal was performed using bur, hand excavator, or two papain-based chemo-mechanical agents. One cavity was left unexcavated in each tooth. Cavities were restored using a zinc polycarboxylate cement (ZPC; n = 25), or a glass ionomer cement (GIC) was used (n = 25). Subsequently, the specimens were stored under simulated pulpal pressure for 45 days. Micro-CT scanning was performed after caries formation, removal, and restoration. Cavity volumes (mm3) and mineral density (MD) changes were calculated. Remineralisation ability was investigated by scanning electron microscopy (SEM) and Fourier-transformed infrared spectroscopy (FTIR). Statistical analysis was performed (5% significance level). Baseline caries, cavity volume, and MD increase after caries removal were similar to all excavation groups (p > 0.05). MD was higher in ZPC compared to GIC (p < 0.05). SEM revealed that the chemo-mechanical techniques produced a smoother dentine surface compared to mechanical methods. FTIR showed silicon-based minerals in GIC-treated dentine, while ZPC-treated presented mineral deposits characterised by amorphous calcium phosphate. In both cases, the presence of carbonates was detected on dentine surfaces. All caries removal techniques performed similarly in terms of carious dentine excavation. ZPC can be used as dentine replacement material after caries removal as it may induce higher MD increase in residual dentine via deposition of calcium phosphates, compared to GIC.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caries Dental / Cementos de Ionómero Vítreo Límite: Humans Idioma: En Revista: Caries Res Año: 2023 Tipo del documento: Article Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caries Dental / Cementos de Ionómero Vítreo Límite: Humans Idioma: En Revista: Caries Res Año: 2023 Tipo del documento: Article Pais de publicación: Suiza