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Nanostructured ZnO thin film to enhance gutta-percha's adhesion to endodontic sealers.
Ferreira, Inês; Lopes, Cláudia; Ferreira, Armando; Braga, Ana Cristina; Vaz, Filipe; Pina-Vaz, Irene; Martin-Biedma, Benjamin.
Afiliación
  • Ferreira I; School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain.
  • Lopes C; CINTESIS, R&D Unit, Faculty of Medicine, University of Porto, Porto, Portugal.
  • Ferreira A; Faculty of Dental Medicine, University of Porto, Porto, Portugal.
  • Braga AC; Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, Portugal.
  • Vaz F; LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, Portugal.
  • Pina-Vaz I; Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Braga, Portugal.
  • Martin-Biedma B; LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Braga, Portugal.
BMC Oral Health ; 24(1): 753, 2024 Jun 29.
Article en En | MEDLINE | ID: mdl-38951790
ABSTRACT

BACKGROUND:

Gutta-percha (GP) combined with an endodontic sealer is still the core material most widely used for tridimensional obturation. The sealer acts as a bonding agent between the GP and the root dentinal walls. However, one of the main drawbacks of GP core material is the lack of adhesiveness to the sealer. ZnO thin films have many remarkable features due to their considerable bond strength, good optical quality, and excellent piezoelectric, antibacterial, and antifungal properties, offering many potential applications in various fields. This study aimed to explore the influence of GP surface's functionalization with a nanostructured ZnO thin film on its adhesiveness to endodontic sealers.

METHODS:

Conventional GP samples were divided randomly into three groups (a) Untreated GP (control); (b) GP treated with argon plasma (PT); (c) Functionalized GP (PT followed by ZnO thin film deposition). GP's surface functionalization encompassed a multi-step process. First, a low-pressure argon PT was applied to modify the GP surface, followed by a ZnO thin film deposition via magnetron sputtering. The surface morphology was assessed using SEM and water contact angle analysis. Further comprehensive testing included tensile bond strength assessment evaluating Endoresin and AH Plus Bioceramic sealers' adhesion to GP. ANOVA procedures were used for data statistical analysis.

RESULTS:

The ZnO thin film reproduced the underlying surface topography produced by PT. ZnO thin film deposition decreased the water contact angle compared to the control (p < 0.001). Endoresin showed a statistically higher mean bond strength value than AH Plus Bioceramic (p < 0.001). There was a statistically significant difference between the control and the ZnO-functionalized GP (p = 0.006), with the latter presenting the highest mean bond strength value.

CONCLUSIONS:

The deposition of a nanostructured ZnO thin film on GP surface induced a shift towards hydrophilicity and an increased GP's adhesion to Endoresin and AH Bioceramic sealers.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Materiales de Obturación del Conducto Radicular / Propiedades de Superficie / Óxido de Zinc / Recubrimiento Dental Adhesivo / Nanoestructuras / Gutapercha Límite: Humans Idioma: En Revista: BMC Oral Health Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: España

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Materiales de Obturación del Conducto Radicular / Propiedades de Superficie / Óxido de Zinc / Recubrimiento Dental Adhesivo / Nanoestructuras / Gutapercha Límite: Humans Idioma: En Revista: BMC Oral Health Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: España