Clinical Adhesiveness of Selected Dental Materials

Jendresen, Malcolm D.; Glantz, Per‐Olof

doi:10.3109/00016358109162257

Cited by 84 publications

(41 citation statements)

References 10 publications

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“…In this study, the materials were coated with saliva to form a pellicle. Jendresen and Glantz (18) have reported that dental materials, regardless of their original surface properties (high-or low-energy surface) assume the same surface properties as natural tooth surfaces covered with pellicle after only 1 to 2 h in the salivary environment.…”

Section: Discussionmentioning

confidence: 99%

Surface Response of Fluorine Polymer-Incorporated Resin Composites to Cariogenic Biofilm Adherence

Gyo

Nikaido

Okada

et al. 2008

Appl Environ Microbiol

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Experimental resin composites with incorporated polytetrafluoroethylene (PTFE) particles were developed, which theoretically could improve the surface properties of the materials, including the inhibition of bacterial adherence. To assess the surface properties in relation to biofilm formation and detachment, 23.1% (wt/wt) linear PTFE particles (FL-30) and cross-linked PTFE particles (FC-30) were incorporated into pure resin composites. Pure PTFE plates and pure resin composites without PTFE (F-0) were used as control specimens. Sucrose-dependent Streptococcus mutans biofilms were formed on the specimen blocks inside an oral biofilm reactor for various time periods and analyzed with or without application of driving forces. In addition, water contact angles and surface roughness were measured. The water contact angles of FL-30 (61.2°) and FC-30 (65.8°) were larger than that of F-0 (48.5°). The largest contact angle (107°) was detected on pure PTFE plates. However, the surfaces of FL-30, FC-30, and pure PTFE plates were rougher than that of F-0. Although the surface properties of the materials differed in terms of contact angles and roughness, these factors seemed not to affect biofilm formation on the surfaces within 5 h. Pure PTFE plates harbored almost the same amounts of biofilm as F-0. However, when a very strong driving force was applied, it was clear that there were significantly smaller amounts of biofilms retained on pure PTFE plates, which showed contact angles much higher than those of the other materials. Hydrophobicity of the resin composite was improved by incorporation of PTFE fillers. However, surface resistance against biofilm formation was not improved.

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Section: Discussionmentioning

confidence: 99%

Surface Response of Fluorine Polymer-Incorporated Resin Composites to Cariogenic Biofilm Adherence

Gyo

Nikaido

Okada

et al. 2008

Appl Environ Microbiol

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“…It is known to begin to form within seconds (Skjørland et al 1995) of the exposure of clean enamel to saliva and to continue to develop over a period of hours (Busscher et al 1989) to form a layer a few hundreds of nanometres thick (measured in vivo on hydroxyapatite (Lie 1977)). The pellicle alters the surface properties of oral surfaces (Jendresen and Glantz 1981;de Jong et al 1982;Sipahi et al 2001) and may act as a boundary lubricant during occlusional contact between teeth (Hatton et al 1987). Boundary lubrication, distinct from hydrodynamic lubrication, is a mechanism that depends more on the chemical properties of a surface-bound film than the rheology of a confined lubricating fluid (Bowden and Tabor 1954;Bhushan 2002), and can be effective even when the separation between the rubbing surfaces is around the size of a molecule (Klein et al 1994;Briscoe et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Lubrication and load-bearing properties of human salivary pellicles adsorbed ex vivo on molecularly smooth substrata

et al. 2012

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In a series of Surface Force Balance experiments, material from human whole saliva was adsorbed to molecularly smooth mica substrata (to form an 'adsorbed salivary film'). Measurements were taken of normal (load bearing, F n ) and shear (frictional, F s *) forces between two interacting surfaces. One investigation involved a salivary film formed by overnight adsorption from undiluted, centrifuged saliva, with the adsorbed film rinsed with pure water before measurement. Measurements were taken under pure water and 70 mM NaNO 3 . In a second investigation, a film was formed from and measured under a solution of 7% filtered saliva in 10 mM NaNO 3 . F n results for both systems showed purely repulsive layers, with an uncompressed thickness of 35-70 nm for the diluted saliva investigation and, prior to the application of shear, 11 nm for the rinsed system. F s * was essentially proportional to F n for all systems and independent of shear speed (in the range 100-2000 nm s 71 ), with coefficients of friction m * 0.24 and m * 0.46 for the unrinsed and rinsed systems, respectively. All properties of the rinsed system remained similar when the pure water measurement environment was changed to 70 mM NaNO 3 . For all systems studied, shear gave rise to an approximately threefold increase in the range of normal forces, attributed to the ploughing up of adsorbed material during shear to form debris that stood proud of the adsorbed layer. The results provide a microscopic demonstration of the wear process for a salivary film under shear and may be of particular interest for understanding the implications for in vivo oral lubrication under conditions such as rinsing of the mouth cavity. The work is interpreted in light of earlier studies that showed a structural collapse and increase in friction for an adsorbed salivary film in an environment of low ionic strength.

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“…7,21,22 This might imply that after acid etching, the surface tension of enamel seems to play a major role in enhancing the mechanical interlocking between demineralized prisms and resin. Jendresen and Glantz 23 showed an increase of this superficial tension after enamel etching. Hence, the achievement of desirable shear strength does not depend on the requirement of adhesive resin wettability.…”

Section: Discussionmentioning

confidence: 99%

Orthodontic bracket bonding without previous adhesive priming: A meta-regression analysis

Altmann

Degrazia

Celeste

et al. 2015

The Angle Orthodontist

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Objective: To determine the consensus among studies that adhesive resin application improves the bond strength of orthodontic brackets and the association of methodological variables on the influence of bond strength outcome. Materials and Methods: In vitro studies were selected to answer whether adhesive resin application increases the immediate shear bond strength of metal orthodontic brackets bonded with a photo-cured orthodontic adhesive. Studies included were those comparing a group having adhesive resin to a group without adhesive resin with the primary outcome measurement shear bond strength in MPa. A systematic electronic search was performed in PubMed and Scopus databases. Results: Nine studies were included in the analysis. Based on the pooled data and due to a high heterogeneity among studies (I 2 5 93.3), a meta-regression analysis was conducted. The analysis demonstrated that five experimental conditions explained 86.1% of heterogeneity and four of them had significantly affected in vitro shear bond testing. The shear bond strength of metal brackets was not significantly affected when bonded with adhesive resin, when compared to those without adhesive resin. Conclusions: The adhesive resin application can be set aside during metal bracket bonding to enamel regardless of the type of orthodontic adhesive used. (Angle Orthod. 2016;86:391-398.)

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Clinical Adhesiveness of Selected Dental Materials

Cited by 84 publications

References 10 publications

Surface Response of Fluorine Polymer-Incorporated Resin Composites to Cariogenic Biofilm Adherence

Surface Response of Fluorine Polymer-Incorporated Resin Composites to Cariogenic Biofilm Adherence

Lubrication and load-bearing properties of human salivary pellicles adsorbed ex vivo on molecularly smooth substrata

Orthodontic bracket bonding without previous adhesive priming: A meta-regression analysis

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