Hardness and in vitro wear of a novel ceramic restorative cement.
The aim of the present work was to compare a new ceramic restorative cement for posterior restorations, DoxaDent, with other types of tooth-colored materials for direct use as regards hardness and in vitro wear. Four hybrid resin composites, one polyacid-modified resin composite, one resin-modified glass ionomer cement, one conventional glass ionomer cement, one zinc phosphate cement, an experimental version as well as the marketed version of the ceramic restorative cement, were investigated. Hardness of the materials was tested with the Wallace indentation tester and wear was tested with the ACTA wear machine. All tests were carried out on 2-wk-old specimens. DoxaDent was as hard as the zinc phosphate cement and the hardest resin composite. The ceramic restorative cement wore significantly more than the resin composites, the same as the zinc phosphate cement, and less than the glass ionomer cements. No correlation between hardness and wear was found. It can be concluded that the ceramic restorative cement is a rather hard material but with a relatively low wear resistance.
Sunnegårdh-Grönberg
Karin
K
Department of Odontology, University of Umeå, Sweden. Karin.Sunnegardh@odont.umu.se
Peutzfeldt
Anne
A
van Dijken
Jan W V
JW
D017607:Aluminum Compounds / Q000737:chemistry; D000704:Analysis of Variance; D017610:Calcium Compounds / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry; D020770:Compomers; D003188:Composite Resins; D003738:Dental Cements / Q000737:chemistry; D019554:Dental Restoration Wear; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis; D005782:Gels; D005899:Glass Ionomer Cements; D006244:Hardness; D008422:Materials Testing; D012044:Regression Analysis; D018709:Statistics, Nonparametric; D015036:Zinc Phosphate Cement
D017607:Aluminum Compounds; D017610:Calcium Compounds; D020770:Compomers; D003188:Composite Resins; D003738:Dental Cements; C462459:DoxaDent; D005782:Gels; D005899:Glass Ionomer Cements; C035219:calcium aluminate; D015036:Zinc Phosphate Cement