Abstract
BackgroundContamination of dentin with hemostatic agents might exert a deleterious effect on adhesive procedures on dentin. The present study was undertaken to investigate the effect of aluminum chloride hemostatic agent on marginal gaps in Cl V giomer restorations.Material and MethodsFifty sound bovine permanent incisors were selected for the purpose of this in vitro study and Cl V cavities were prepared on their buccal surfaces; the gingival margins of the cavities were placed in dentin. The tooth samples were randomly assigned to two groups (n=25). The samples in groups 1 and 2 underwent a restorative procedure without and with the application of aluminum chloride hemostatic agent in the cavity, respectively, before application of the adhesive. BeautiBond one-step self-etch adhesive and Beautifil II giomer restorative material were used for the restoration of the cavities in both groups. The samples were thermocycled and sectioned, followed by measuring the gap sizes at gingival margins in µm under a stereomicroscope. The marginal gaps were compared with Mann-Whitney U test. Statistical significance was set at P<0.05. ResultsThe results showed significant differences in the mean marginal gaps between the two groups under study (P<0.001); the mean marginal gaps were higher in group 2 (with hemostatic agent) compared to those in group 1 (without hemostatic agent) (P<0.0005).ConclusionsContamination with aluminum chloride hemostatic agent in giomer restorations gave rise to higher gingival margin gaps. Key words:Dental adhesives, giomer restorative material, hemostatic agent, marginal adaptation.
Highlights
One of the most important and effective factors in the success of composite resin restorations is proper isolation and management of contamination resulting from blood and gingival crevicular fluid
In a study by Kuphasuk et al on the bond strength of two types of adhesive agents contaminated with a hemostatic agent, the hemostatic agent resulted in a decrease in the bond strength of the self-etch adhesive resin; there was no significant difference in the bond strength of the total-etch adhesive between the contaminated dentin and normal dentin [10]
Considering the fact that hemostatic agents can induce changes on the dentin surface, affecting the bonding of restorations [20] and since no studies to date have evaluated the effect of hemostatic agents on the marginal gaps of giomer restorations and the results of studies on composite resins and other adhesives cannot be generalized to giomer restorations due to differences in their chemical compositions [21], the present in vitro study was undertaken to evaluate the effect of contamination with aluminum chloride hemostatic agent on the marginal gaps of Cl V giomer restorations
Summary
One of the most important and effective factors in the success of composite resin restorations is proper isolation and management of contamination resulting from blood and gingival crevicular fluid. A study by Mohammadi et al showed that the hemostatic agent resulted in an increase in the microleakage of Cl V composite resin restorations [13]. Considering the fact that hemostatic agents can induce changes on the dentin surface, affecting the bonding of restorations [20] and since no studies to date have evaluated the effect of hemostatic agents on the marginal gaps of giomer restorations and the results of studies on composite resins and other adhesives cannot be generalized to giomer restorations due to differences in their chemical compositions [21], the present in vitro study was undertaken to evaluate the effect of contamination with aluminum chloride hemostatic agent on the marginal gaps of Cl V giomer restorations
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