scholarly journals Benefits of Residual Aluminum Oxide for Sand Blasting Titanium Dental Implants: Osseointegration and Bactericidal Effects

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 178
Author(s):  
Javier Gil ◽  
Román Pérez ◽  
Mariano Herrero-Climent ◽  
Maria Rizo-Gorrita ◽  
Daniel Torres-Lagares ◽  
...  
Keyword(s):  
Free Energy ◽  
Dental Implants ◽  
Surface Free Energy ◽  
Tissue Growth ◽  
Surface Wettability ◽  
Sand Blasting ◽  
Chemical Surface ◽  
Physico Chemical ◽  
Titanium Dental Implants

Objectives. The purpose of this work was to determine the influence of residual alumina after sand blasting treatment in titanium dental implants. This paper studied the effect of alumina on physico-chemical surface properties, such as: surface wettability, surface energy. Osseointegration and bacteria adhesion were determined in order to determine the effect of the abrasive particles. Materials and Methods. Three surfaces were studied: (1) as-received, (2) rough surface with residual alumina from sand blasting on the surface and (3) with the same roughness but without residual alumina. Roughness was determined by white light interferometer microscopy. Surface wettability was evaluated with a contact angle video-based system and the surface free energy by means of Owens and Wendt equation. Scanning electron microscopy equipped with microanalysis was used to study the morphology and determine the chemical composition of the surfaces. Bacteria (Lactobacillus salivarius and Streptococcus sanguinis) were cultured in each surface. In total, 110 dental implants were placed into the bone of eight minipigs in order to compare the osseointegration. The percentage of bone-to-implant contact was determined after 4 and 6 weeks of implantation with histometric analysis. Results. The surfaces with residual alumina presented a lower surface free energy than clean surfaces. The in vivo studies demonstrated that the residual alumina accelerated bone tissue growth at different implantation times, in relation to clean dental implants. In addition, residual alumina showed a bactericidal effect by decreasing the quantity of bacteria adhering to the titanium. Conclusions. It is possible to verify the benefits that the alumina (percentages around 8% in weight) produces on the surface of titanium dental implants. Clinical relevance. Clinicians should be aware of the benefits of sand-blasted alumina due to the physico-chemical surface changes demonstrated in in vivo tests.

The influence of surface free energy and surface roughness on early plaque formation. An in vivo study in man

1990 ◽  
Vol 17 (3) ◽  
pp. 138-144 ◽  
Author(s):  
M. Quirynen ◽  
M. Marechal ◽  
H. J. Busscher ◽  
A. H. Weerkamp ◽  
P. L. Darius ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Free Energy ◽  
Surface Free Energy ◽  
Plaque Formation ◽  
In Vivo Study

scholarly journals Defining surfaces : Implant topography – a review (Preprint)

2018 ◽  
Author(s):  
Preeti Satheesh Kumar ◽  
Vyoma Venkatesh Grandhi ◽  
Vrinda Gupta
Keyword(s):  
Surface Roughness ◽  
Surface Topography ◽  
Dental Implants ◽  
Sol Gel ◽  
Implant Surface ◽  
Research Publications ◽  
Bone To Implant Contact ◽  
Titanium Dental Implants

BACKGROUND . A variety of claims are made regarding the effects of surface topography on implant osseointegration. The development of implant surfaces topography has been empirical, requiring numerous in vitro and in vivo tests. Most of these tests were not standardized, using different surfaces, cell populations or animal models. The exact role of surface chemistry and topography on the early events of the osseointegration of dental implants remain poorly understood. OBJECTIVE This review considers the major claims made concerning the effects of titanium implant surface topography on osseointegration. The osseointegration rate of titanium dental implants is related to their composition and surface roughness. The different methods used for increasing surface roughness or applying osteoconductive coatings to titanium dental implants are reviewed. Important findings of consensus are highlighted, and existing controversies are revealed. METHODS This review considers many of the research publications listed in MEDLINE and presented in biomedical research publications and textbooks. Surface treatments, such as titanium plasma-spraying, grit-blasting acid-etching,alkaline etching, anodization,polymer demixing ,sol gel conversion and their corresponding surface morphologies and properties are described. RESULTS Many in vitro evaluations are not predictive of or correlated with in vivo outcomes. In some culture models, increased surface topography positively affects pro-osteogenic cellular activities. Many studies reveal increase in bone-to-implant contact,with increased surface topography modifications on implant surfaces. CONCLUSIONS Increased implant surface topography improves the bone-to-implant contact and the mechanical properties of the enhanced interface.

Investigating the surface wettability and surface free energy of sodium silicate-impregnated poplar wood

2021 ◽  
pp. 1-10
Author(s):  
Xinde Bao ◽  
Mengying Zhang ◽  
Ping Li ◽  
Jianxiong Lu ◽  
Guangming Yuan ◽  
...  
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Sodium Silicate ◽  
Surface Wettability ◽  
Poplar Wood

The Influence of Surface Free-energy on Planimetric Plaque Growth in Man

1989 ◽  
Vol 68 (5) ◽  
pp. 796-799 ◽  
Author(s):  
M. Quirynen ◽  
M. Marechal ◽  
H.J. Busscher ◽  
A.H. Weerkamp ◽  
J. Arends ◽  
...  
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Energetic Materials ◽  
Dental Students ◽  
Tooth Surface ◽  
Double Blind Study ◽  
Plaque Area ◽  
Supragingival Plaque ◽  
Micro Organisms

The purpose of this study was to examine the change in plaque area over nine days in vivo on four materials with different surface free-energies (s.f.e.). Twelve healthy dental students participated in a crossover, split-mouth, double-blind study. Supragingival plaque formation was recorded over a nine-day period, on four different materials: fluorethylenepropylene (Teflon) (FEP), parafilm (PAR), cellulose acetate (CA), and enamel (E) with s.fe. of 20, 26, 57, and 88 erg/cm2, respectively. Strips made from the first three materials were stuck to the buccal surface of an upper incisor. The remaining incisor was carefully polished and served as an enamel surface. The increase in plaque was evaluated after three, six, and nine days. A planimetrical analysis was used so that the plaque area could be expressed as a percentage of the total buccal tooth surface. This procedure was repeated on each subject, so that at the end, each pair of central or lateral incisors received the four tested materials. The results indicated that the adherence of micro-organisms on pellicle-coated substrata was influenced by the material's s.f.e.; there was an association between the s.f.e. of the substrata and the supragingival plaque extension in vivo. High surface free-energy substrata in the oral cavity attracted more micro-organisms than did low energetic materials. Additionally, the bacterial adhesion seemed very weak on surfaces with a low s.f.e.

scholarly journals Citric Acid Passivation of Titanium Dental Implants for Minimizing Bacterial Colonization Impact

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 214
Author(s):  
Miquel Punset ◽  
Javi Vilarrasa ◽  
José Nart ◽  
José María Manero ◽  
Begoña Bosch ◽  
...  
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Citric Acid ◽  
Dental Implants ◽  
Surface Free Energy ◽  
Bacterial Colonization ◽  
Surface Treatments ◽  
Average Roughness ◽  
Physical Chemical ◽  
Static Contact

Surface topography and physical-chemical properties usually play a key-role in both osseointegration improvement and bacterial colonization reduction over the surface of dental implants. The aim of this study is to compare the chemical and bacteriological behavior of two different acid passivation surface treatments on titanium c.p. grade 3 used for dental implant manufacturing. Surface roughness was evaluated using White Light Interferometry (WLI) in order to determine different roughness parameters such as average roughness (Sa), the spacing parameter (Sm) and the hybrid parameter of surface index area (SIA). Contact angle (CA) and surface free energy (SFE) were evaluated in order to establish the surface wettability of the different groups of samples. Titanium ion-release from the different samples was also been analyzed in Hank’s solution medium at 37 °C by using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) at different immersion times. Bacterial viability adhesion assays were done using S. sanguinis (CECT 480, Spain) as a bacterial strain model of primary colonizer in oral biofilm formation. The bacteria attachment and morphology on Ti surfaces were determined using a live/dead staining method after 4 h of incubation and further analyzed by scanning electron microscope (SEM). Acid passivation surface treatments produced a statistically-significant (p < 0.05) roughness increase in all the evaluated parameters (Sa, Sm, SAI). The treatment with citric acid decreased the static contact angle (CA) and caused an increase in surface free energy (SFE) with a high polarization and oxidizing character. These physical-chemical surface characteristics obtained by means of citric acid passivation caused the bactericidal behavior as it has been proved in bacterial studies.

scholarly journals Introducing a Novel Experimental Model for Osseo-Disintegration of Titanium Dental Implants Induced by Monobacterial Contamination: An In-Vivo Feasibility Study

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7076
Author(s):  
Christian Flörke ◽  
Anne-Katrin Eisenbeiß ◽  
Ulla Metz ◽  
Aydin Gülses ◽  
Yahya Acil ◽  
...  
Keyword(s):  
Bone Density ◽  
Dental Implants ◽  
Experimental Model ◽  
Bone Growth ◽  
Implant Surface ◽  
Feasible Option ◽  
Bone To Implant Contact ◽  
Mini Pigs ◽  
Titanium Dental Implants

Background and Objectives: The aim of the current study was to establish an osseo-disintegration model initiated with a single microorganism in mini-pigs. Materials and Methods: A total of 36 titanium dental implants (3.5 mm in diameter, 9.5 mm in length) was inserted into frontal bone (n: 12) and the basis of the corpus mandible (n: 24). Eighteen implants were contaminated via inoculation of Enterococcus faecalis. Six weeks after implant insertion, bone-to-implant contact (BIC) ratio, interthread bone density (ITBD), and peri-implant bone density (PIBD) were examined. In addition to that, new bone formation was assessed via fluorescence microscopy, histomorphometry, and light microscopical examinations. Results: Compared to the sterile implants, the contaminated implants showed significantly reduced BIC (p < 0.001), ITBD (p < 0.001), and PBD (p < 0.001) values. Around the sterile implants, the green and red fluorophores were overlapping and surrounding the implant without gaps, indicating healthy bone growth on the implant surface, whereas contaminated implants were surrounded by connective tissue. Conclusions: The current experimental model could be a feasible option to realize a significant alteration of dental-implant osseointegration and examine novel surface decontamination techniques without impairing local and systemic inflammatory complications.

scholarly journals Comparison between Sandblasted Acid-Etched and Oxidized Titanium Dental Implants: In Vivo Study

2019 ◽  
Vol 20 (13) ◽  
pp. 3267 ◽  
Author(s):  
Eugenio Velasco-Ortega ◽  
Ivan Ortiz-García ◽  
Alvaro Jiménez-Guerra ◽  
Loreto Monsalve-Guil ◽  
Fernando Muñoz-Guzón ◽  
...  
Keyword(s):  
Residual Stress ◽  
Dental Implants ◽  
Rabbit Model ◽  
Chemical Properties ◽  
In Vivo Study ◽  
Implant Surface ◽  
Bone Response ◽  
Etched Surface ◽  
Titanium Dental Implants

The surface modifications of titanium dental implants play important roles in the enhancement of osseointegration. The objective of the present study was to test two different implant surface treatments on a rabbit model to investigate the osseointegration. The tested surfaces were: a) acid-etched surface with sandblasting treatment (SA) and b) an oxidized implant surface (OS). The roughness was measured by an interferometeric microscope with white light and the residual stress of the surfaces was measured with X-ray residual stress Bragg–Bentano diffraction. Six New Zealand white rabbits were used for the in vivo study. Implants with the two different surfaces (SA and OS) were inserted in the femoral bone. After 12 weeks of implantation, histological and histomorphometric analyses of the blocks containing the implants and the surrounding bone were performed. All the implants were correctly implanted and no signs of infection were observed. SA and OS surfaces were both surrounded by newly formed trabeculae. Histomorphometric analysis revealed that the bone–implant contact % (BIC) was higher around the SA implants (53.49 ± 8.46) than around the OS implants (50.94 ± 16.42), although there were no significant statistical differences among them. Both implant surfaces (SA and OS) demonstrated a good bone response with significant amounts of newly formed bone along the implant surface after 12 weeks of implantation. These results confirmed the importance of the topography and physico–chemical properties of dental implants in the osseointegration.

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