Contact angle measurement

Ihrig, Judson L.; Lai, David

doi:10.1021/ed034p196

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…In the present study, real-time observations were conducted in transparent resin blocks. Substitution of dentine by acrylic resin also resulted in altered surface properties and primarily a more hydrophobic behaviour, leading to an increase in irrigant contact angle by 30 o -60 o (Ihrig & Lai 1957, Good & Koo 1979, Rubio et al 1991, Hu et al 2010. Thus, the experiments may have overestimated the formation of vapor lock, as shown by the CFD simulations comparing two contact angles (Fig.…”

Section: Discussionmentioning

confidence: 98%

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Formation and removal of apical vapor lock during syringe irrigation: a combined experimental and Computational Fluid Dynamics approach

et al. 2013

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Section: Discussionmentioning

confidence: 98%

“…In the present study, real‐time observations were conducted in transparent resin blocks. Substitution of dentine by acrylic resin also resulted in altered surface properties and primarily a more hydrophobic behaviour, leading to an increase in irrigant contact angle by 30 o –60 o (Ihrig & Lai , Good & Koo , Rubio et al . , Hu et al .…”

Section: Discussionmentioning

confidence: 99%

Formation and removal of apical vapor lock during syringe irrigation: a combined experimental and Computational Fluid Dynamics approach

et al. 2013

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“…Experimental investigations have addressed the effect of surface chemistry on contact angle values. [8][9][10][11][12][13] These earlier reports have used microscopes or other more specialized optical equipment to view the droplets. 12,14 In contrast, the heart of our contact angle measurement setup is a webcam connected to a standard personal computer.…”

Section: Experimental Designmentioning

confidence: 99%

“…[8][9][10][11][12][13] • If research interests and facilities of the course instructors allow, other kinds of surface roughening techniques, such as plasma etching or colloidal particle layers, or other surface roughness measurement methods, such as a profilometer or atomic force microscope, could be used.…”

Section: Data Analysis and Interpretationmentioning

confidence: 99%

Roughness effects on contact angle measurements

Ryan¹,

Poduska²

2008

American Journal of Physics

138

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We have developed a simple and economical procedure to demonstrate the effects of roughness and wetting fraction on the equilibrium contact angles of liquid droplets on solid surfaces. Contact angles for droplets placed on a rough surface, which wet only a portion of the surface, are larger than the contact angles of droplets formed by condensation of steam, which wet the surface more completely. These contact angle data facilitate assessments of changes in true surface area, due to surface roughening, as well as changes in the fractional contact areas of the water droplets, due to the formation of air pockets between the rough surface and the droplet.

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“…The medical implants require a hydroxyapatite coating as bioactive phase, with an osteoconductive role, that in the direct contact with the bone permits a better osseointegration [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Contact Angle Measurements at the Interface of Co-Cr Alloy Sintered by DMLS and Coated with Hydroxyapatite

2020

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The purpose of this paper consists in the evaluation of the contact angle at the interface of Co-Cr sintered samples by DMLS process. The sintered samples supported a post treatment and were coated by HA using sol-gel method and were immersed in simulated biological fluid SBFx1 for 7 days. The Co-Cr (ST2724G) sintered disks by Direct Metal Laser Sintering (DMLS) process using a Phenix Systems machine, were coated by hydroxyapatite sol-gel method for improving the bioactivity of dental implants. KSV CAM 101 apparatus is used for static contact angle measurements performed on dried films. After wetting angle determination, we can notice that the sintered samples of Co-Cr alloy, which supported a post treatment, after DMLS process show better roughness surfaces and the layers of HA are uniformly deposited. The contact angle values are very important to characterize the surfaces and the roughness of the solid materials used for implantology. In this paper, the contact angles at the interface between Co-Cr sintered disks coating with HA and distilled water reveal a hydrophilic character. Scanning electronic microscopy SEM and EDS techniques were employed for morphological investigation of the sintered samples manufactured by DMLS process. They were also used for semi-quantitative and qualitative chemical and metallographic analyses.

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Contact angle measurement

Abstract: Describes the Wilhelmy method and an apparatus and procedure for measuring contact angle.

Cited by 10 publications

References 6 publications

Formation and removal of apical vapor lock during syringe irrigation: a combined experimental and Computational Fluid Dynamics approach

Formation and removal of apical vapor lock during syringe irrigation: a combined experimental and Computational Fluid Dynamics approach

Roughness effects on contact angle measurements

Contact Angle Measurements at the Interface of Co-Cr Alloy Sintered by DMLS and Coated with Hydroxyapatite

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