The Use of Glass-fibers Ribbon and Composite for Prosthetic Restoration of Missing Primary Teeth-Laboratory and Clinical Research

Abstract

Very few modalities can be used for restoring missing primary anterior teeth, although the impact of missing anterior teeth during early childhood can be harmful. In the permanent dentition the use of glass-fibers ribbon and composite materials are frequently used for restoring missing teeth with no or minimal preparation. The purpose of this study was to examine the possibility to use the glass-fibers ribbon (ever-Stick from GC Corporation, Japan) together with esthetic composite materials (G-aenial A1 from GC Corporation, Japan) for restoring anterior primary teeth and to determine the best methodology and bonding system to be used.The effect of etching time was analyzed using 20-80 sec on primary buccal enamel with SEM and the results showed that at least 60 second is necessary in order to remove the prismless layer and to affect the prismatic layer similar (as observed by SEM) to the 20 sec etching time on permanent enamel. Three bonding systems (SE Bond by Kurary, Japan, Scotchbond Universal by 3M/ESPE, Germany and G-aenial bond by GC Company, Japan) were compared for bonding the glass-fibers ribbon to the primary enamel and microtensile strength analyses were performed. Mean tensile strength ranged from 10.9 to 13 MPa with no statistically significant differences between all three systems.Based on the laboratory results it can be concluded that the glass-fibers ribbon together with the composite material can be used clinically to restore missing primary teeth for esthetic and functional reasons. Two clinical cases are presented that show favorable results.

Clinical evaluation of the loop-design fibre-reinforced composite and the band-and-loop space maintainers

“…This finding is consistent with those of previous studies, 1,4,10 and is attributed to a relatively weak bond between composites and the aprismatic enamel of deciduous teeth. 1,10,12,15 Kirzioğlu and Ertürk 4 reported failure rates of 32%, within just one month when fibres had been placed without rubber dam protection and emphasized the importance of moisture control during placement to ensure good bond strength.…”

“…As recommended by Zilberman, 12 the bonding surfaces on the second deciduous molars were prepared by etching the enamel for 60 sec with 34 percent phosphoric acid (Scotchbond Universal etchant, 3M ESPE, St. Paul, USA). The everStick instruction manual recommends a 60 sec etch time to maximize bond strength.…”