Influence of different indentation load and dwell time on Knoop microhardness tests for composite materials

Polymer Testing

Volumn 23, Issue 3, 2004, Pages 343-346

  Yoldas, Oguz ^a   Akova, Tolga ^a   Uysal, Hakan ^a  

^a CUKUROVA UNIVERSITY   (Turkey)

Author keywords

Composite material; Dwell time; Indentation load; Microhardness; Microindentation

Indexed keywords

COMPRESSIVE STRENGTH; INDENTATION; MICROHARDNESS; RESINS; WEAR RESISTANCE;

INDENTATION LOADS; MICROINDENTATION;

DENTAL COMPOSITES;

EID: 1642347767     PISSN: 01429418     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0142-9418(03)00104-1     Document Type: Article

References (17)

1. Helvatjoglou-Antoniadi M., Papadogianis Y., Koliniotou-Kubia E., Kubias S. Surface hardness of light-cured and self cured composite resins. J. Prosthet. Dent. 65:1991;215-220.
2. Leung R.L., Fan P.L., Johnston W. Post irradiation polymerization of visible-light activated composite resins. J. Dent. Res. 62:1983;363-365.
3. Watts D.C., Amer O.M., Combe E.C. Surface hardness development in light-cured composites. Dent. Mater. 3:1987;265-269.
4. Yap A.U. Effectiveness of polymerization in composite restoratives claiming bulk placement: impact of cavity depth and exposure time. Oper. Dent. 25:2000;113-120.
5. Yap A.U., Wee K.E., Teoh S.H. Effect of cyclic temperature changes on hardness of composite resins. Oper. Dent. 27:2002;25-29.
6. Orefice R.L., Discacciati J.A.C., Neves A.D., Mansur H.S., Jansen W.C. In situ evaluation of the polymerization kinetics and corresponding evolution of the mechanical properties of dental composites. Polym. Test. 22:2003;77-81.
7. ASTM Designation E 384-99, Standard test method for microindentation hardness of materials, in: 2000 Annual Book of ASTM Standards, ASTM, Philadelphia PA, 2000 pp. 406-429.
8. Yap A.U., Chew C.L., Ong L.F., Teoh S.H. Enviromental damage and occlusal contact area wear of composite retoratives. J. Oral Rehabil. 29:2002;87-97.
9. El-Kalla I.H., Garcia-Godoy F. Mechanical properties of compomer restorative materials. Oper. Dent. 24:1999;2-8.
10. Brosh T., Baharav H., Gross O., Laufer B.Z. The influence of surface loading and irridation time during curing on mechanical properties of a composite. J. Prosthet. Dent. 77:1997;573-577.
11. Kays B.T., Sneed W.D., Nuckles D.B. Microhardness of class II composite resin restorations with different matrices and light positions. J. Prosthet. Dent. 65:1991;487-490.
12. Guertsen W., Leyhausen G., Garcia-Godoy F. Effect of storage media on the flouride release and surface microhardness of four polyacid-modified composite resins('compomers'). Dent. Mater. 15:1999;196-201.
13. Chan C.K., Swift E.J. Effects of 'resin-compatible' cavity varnishes on composite resin microhardness. J. Prosthet. Dent. 67:1992;791-793.
14. Kolinitou-Kubia E., Jacobsen P.H. The effect of irradiation time on the physical properties of ligt-cure composite resins. Clin. Mater. 6:1990;21-28.
15. Giannakopoulos A.E., Suresh S. Determination of elastic properties by instrumented sharp indentation. Scripta Mater. 40:1999;1191-1198.
16. Zamfirova G., Dimitrova A. Some methodological contributions to the Vickers microhardness technique. Polym. Test. 19:2000;533-542.
17. Pober R. Reporting microhardness data in Scientific publications. J. Dent. Res. 77:1998;1766.