Influence of surface modification on friction coefficient of the titanium–elastomer couple

• Autorzy: Chladek W. , Hadasik E. , Chladek G.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of a study of the friction coefficient of titanium–elastomer couple. The study was carried out with a view to potential future utilization of its results for constructing retentive elements of implanted prostheses. Changes in the friction force were recorded while removing titanium specimens placed between two silicone counter specimens made of Ufi Gel. The influence of the titanium specimen movement speed in relation that of to the counter specimens and the influence of clamping force on the friction force were assessed. Additionally, the surface roughness of titanium specimens differed; in one case, titanium was coated with polyethylene. The effect of introducing artificial saliva between the cooperating surfaces on the friction force and friction coefficient was analyzed as well. Based on the characteristics recorded, the possibilities of shaping the friction coefficient have been assessed, since it is the friction coefficient that determines effective operation of a friction couple through increasing the titanium specimen roughness. The artificial saliva being introduced between the specimens reduces considerably the friction coefficient through a change of the phenomenon model. An increase in the pressure force for the specimens of high roughness entails a reduction of the friction coefficient. The study carried out allows us to identify the roughness parameters, which in turn will enable obtaining the prescribed retention force for friction/membrane couplings.

Słowa kluczowe

EN

friction coefficient; friction force; titanium; silicone; saliva; implant prosthesis; retention

PL

implant; tytan; silikon; siła tarcia; utrzymanie protezy

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2007
• Tom: Vol. 9, nr 2
• Strony: 17--25
• Opis fizyczny: Bibliogr. 19 poz., rys., wykr.

Twórcy

autor

Chladek W.

autor

Hadasik E.

autor

Chladek G.

• Silesian University of Technology, Faculty of Materials Science and Metallurgy, Department of Process Modelling and Medical Engineering, ul. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

• [1] BOERRIGTER E.M., GEERTMAN M.E., VAN OORT R.P.J. et al., Patient satisfaction with implant-retained mandibular overdentures. A comparison with new complete dentures not retained by implants – a multicentre randomized clinical trial, British Journal of Oral and Maoxillofacial Surgery, 1995, 133, 282–288.
• [2] AWAD M.A., LUND J.P., DUFRESNE E., FEINE J.S., Comparing the efficacy of mandibular implant-retained overdentures and conventional dentures among middleaged edentulous patients: Satisfaction and functional assessment, Int. J. Prosthodont, 2003, 16, 117–122.
• [3] THOMASON J.M., LUND J.P., CHEHADE A., FEINE J.S., Patient satisfaction with mandibular implant overdentures and conventional dentures 6 months after delivery, Int. J. Prosthodont, 2003, 16, 467–73.
• [4] NAERT I., ALSAADI G., QUIRYNEN M., Prosthetic aspects and patient satisfaction with two-implant-retained mandibular overdentures: A 10-year randomized clinical study, Int. J. Prosthodont, 2004, 17, 401–10.
• [5] NÄRHI T.O., GEERTMAN M.E., HEVINGA M., ABDO H., KALK W., Changes in the edentulous maxilla in persons wearing implant-retained mandibular overdentures, The Journal of Prosthetic Dentistry, July 2000.
• [6] MACENTEE M.I., WALTON J.N., GLICK N., A clinical trial of patient satisfaction and prosthodontic needs with ball and bar attachments for implant-retained complete overdentures: three-year results, J. Prosthet. Dent., 2005, 93(1), 28–37.
• [7] SADOWSKY S.J., Mandibular implant-retained overdentures: A literature review, The Journal of Prosthetic Dentistry, November 2001, Vol. 86, No. 5.
• [8] CHLADEK W., MAJEWSKI S., MOL M., KRUKOWSKA J., Nowa koncepcja usprawnienia mechanizmu mocowania protez overdenture na filarach implantowanych w przednim odcinku wyrostka zębodołowego, Implantoprotetyka, 2003, 1.
• [9] ŻMUDZKI J., CHLADEK G., Ocena obciążenia strefy kotwienia filaru w aspekcie funkcjonowania implantoprotezy osiadającej, Materiały VI Konferencji „Biomateriały i Mechanika w Stomatologii”, Ustroń, 21–24 X 2004.
• [10] CHLADEK G., ŻMUDZKI J., Ocena obciążenia tkanek miękkich w strefie kotwienia implantu stabilizującego całkowitą protezę osiadającą, Materiały XIII Seminarium Naukowego „Nowe Technologie i Materiały w Metalurgii i Inżynierii Materiałowej”, Katowice, 2005. Fig. 8. Dependence of friction coefficient and friction force on pressure force and relative speed of friction elements for specimens P350 and P500 Influence of surface modification on friction coefficient of the titanium–elastomer couple 25
• [11] HAYAKAWA I., AKIBA N., ENSHENG KEH, KASUGA Y., Physical properties of a new denture lining material containing a fluoroalkyl methacrylate polymer, The Journal of Prosthetic Dentistry, July 2006.
• [12] MUTLUAY M.M., EYSTEIN RUYTER I., Evaluation of adhesion of chairside hard relining materials to denture base polymers, The Journal of Prosthetic Dentistry, July, November 2005.
• [13] TAKAHASHIA Y., CHAIB J., SWEE-CHIAN TAN, Effect of water storage on the impact strength of three glass fiber-reinforced composites, Dental Materials, 2006, 22, 291–297.
• [14] DOS SANTOS NUNES REIS J.M., VERGANI C.E., PAVARINA A.C., GIAMPAOLO E.T., MACHADO A.L., Effect of relining, water storage and cyclic loading on the flexural strength of a denture base acrylic resin, Journal of Dentistry, 2006, 34, 420–426.
• [15] PERSON B.N.J., Sliding friction, Surface Science Reports, 1999, 33, 83–119.
• [16] PERSSON B.N.J., ALBOHR O., MANCOSU F. et. al., On the nature of the static friction, kinetic friction and creep, Wear, 2003, 254, 835–851.
• [17] PERSSON B.N.J., On the theory of rubber friction, Surface Science, 1998, 401, 445–454.
• [18] PERSSON B.N.J., Sliding Friction: Physical Principles and Applications, Heidelberg, 1988.
• [19] WIECZOROWSKI M., Problemy charakteryzowania stereometrii powierzchni, PAK, 2004.