Abstract
New materials are being introduced to address the need for restoring both carious and non carious (caused by a combination of abrasion, erosion and abfraction) lesions. In an era when more and more patients are retaining their natural dentition, the need for this restoration is increasing. The ideal materials should be adhesive, tooth colored and abrasion-resistant
 Materials and Methods: Seven disc samples of Compomer, Giomer & Composite restorative materials were prepared for measurement of compressive strength.
 Results: The value of Compressive strength of Giomer becomes high in comparison to Compomer but not significant in comparison to Composite.
 Update Dent. Coll. j: 2019; 9 (2): 36-39
Highlights
During the last decade, resin based composite materials have used widely to restore posterior teeth[1]
Glass ionomers, and resin modified glass ionomers are weaker than composite resins, the clinical application of fluoride releasing materials is usually limited to non load bearing areas[8]
As we move across the continuum from glass ionomers and resin modified glass ionomers, to compomers and composite resins, the compressive strengths generally increase
Summary
Resin based composite materials have used widely to restore posterior teeth[1]. Other areas of concern include marginal leakage, discoloration, polymerization shrinkage and post operative sensitivity[2] Some of these clinical characteristics have improved over time as the adhesive technology has advanced and additional features, such as fluorides, have been added to the materials[3,4,5]. Glass ionomers, and resin modified glass ionomers are weaker than composite resins, the clinical application of fluoride releasing materials is usually limited to non load bearing areas[8]. Calcium is the essential part of glass filer particles in glass ionomers and resin modified glass ionomers It initiates the reaction with the acids or polyacids to form crosslinked gel network. The Ca-Al-F silicate glass fillers are mote soluble and weaker than those fillers used in composites that does not contain calcium This partially contributes to the lower mechanical properties of glass ionomers and resin modified
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