Influence of titanium surface residual stresses on osteoblastic response and bacteria colonization
Autor/a
Pereira, Rita
Data de publicació
2024ISSN
1996-1944
Resum
Grit basting is the most common process applied to titanium dental implants to give them a roughness that favors bone colonization. There are numerous studies on the influence of roughness on osseointegration, but the influence of the compressive residual stress associated with this treatment on biological behavior has not been determined. For this purpose, four types of surfaces have been studied using 60 titanium discs: smooth, smooth with residual stress, rough without stress, and rough with residual stress. Roughness was studied by optic interferometry; wettability and surface energy (polar and dispersive components) by contact angle equipment using three solvents; and residual stresses by Bragg–Bentano X-ray diffraction. The adhesion and alkaline phosphatase (ALP) levels on the different surfaces were studied using Saos-2 osteoblastic cultures. The bacterial strains Streptococcus sanguinis and Lactobacillus salivarius were cultured on different surfaces, determining the adhesion. The results showed that residual stresses lead to increased hydrophilicity on the surfaces, as well as an increase in surface energy, especially on the polar component. From the culture results, higher adhesion and higher ALP levels were observed in the discs with residual stresses when compared between smooth and roughened discs. It was also found that roughness was the property that mostly influenced osteoblasts’ response. Bacteria colonize rough surfaces better than smooth surfaces, but no changes are observed due to residual surface tension.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
616.3 - Patologia de l'aparell digestiu. Odontologia
Paraules clau
Titani
Granalla
Implants dentals
Estrès residual
Osteoblasts
Titanio
Granallado
Implantes dentales
Estrés residual
Osteoblastos
Titanium
Grit blasting
Dental implants
Residual stress
Osteoblasts
Pàgines
13
Publicat per
MDPI
Col·lecció
17; 7
Publicat a
Materials
Citació
Pereira, Rita; Maia, Paulo; Ríos-Santos, JV. [et al.]. Influence of titanium surface residual stresses on osteoblastic response and bacteria colonization. Materials, 2024, 17(7), 1626. Disponible en: <https://www.mdpi.com/1996-1944/17/7/1626>. Fecha de acceso: 23 may. 2024. DOI: 10.3390/ma17071626
Aquest element apareix en la col·lecció o col·leccions següent(s)
- Odontologia [242]
Drets
© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Excepte que s'indiqui una altra cosa, la llicència de l'ítem es descriu com https://creativecommons.org/licenses/by/4.0/