Influence of titanium surface residual stresses on osteoblastic response and bacteria colonization
Author
Pereira, Rita
Publication date
2024ISSN
1996-1944
Abstract
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.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Titani
Granalla
Implants dentals
Estrès residual
Osteoblasts
Titanio
Granallado
Implantes dentales
Estrés residual
Osteoblastos
Titanium
Grit blasting
Dental implants
Residual stress
Osteoblasts
Pages
13
Publisher
MDPI
Collection
17; 7
Is part of
Materials
Citation
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
This item appears in the following Collection(s)
- Odontologia [248]
Rights
© 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/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/