In Vitro Investigation of Physical Properties of Resin and Glass Ionomer Based Dental Materials Used as Fissure Sealants
Project no. 400 · Status: Kapanmış · 2017
Summary
Fissure sealant procedures are an important step for preventive treatment planning to prevent occlusal caries formation. The clinical long-term success of this treatment depends on the properties of the material and the quality of bonding to the tooth surface. Today, to increase the success rate, fissure sealants with different contents have been introduced. Besides, different enamel preparation techniques are being investigated in order to increase the bonding strength. The aim of this study was to evaluate the physical properties of dental materials with different contents applied as fissure sealants in vitro and to investigate the effect of deproteinization as an enamel preparation technique for bonding. Extracted third molar teeth were separated into two groups (with deproteinization/without deproteinization). Then resin-based (Clinpro, Icon, Superbond) and glass ionomer-based (GCP Glass Fill, GCP Glass Seal, Fuji Triage) dental materials were applied as fissure sealants on the occlusal surfaces. Materials’ microleakage and shear bond strength were evaluated. Microhardness of the materials were measured in vitro. Icon material (DMG, Hamburg, Almanya), could not be evaluated for micro hardness and shear bond strength test due to its low viscosity. According to microhardness results, the highest microhardness value was observed in GC Fuji Triage (GC Europe, Leuven, Belçika) and the lowest microhardness value was observed in Clinpro (3M Espe, ABD) group. the difference between GCP Glass Fill (GCP Dental, Hollanda) and GCP Glass Seal (GCP Dental, Hollanda) was found to be statistically insignificant (p?0.86). In terms of microleakage, Clinpro (3M Espe, ABD) material in the resin-based group and Fuji Triage (GC Europe, Leuven, Belçika) material in the glass ionomer-based group showed less microleakage. The highest shear bond strength was found in the Clinpro group (11,6 4,2 MPa). The lowest shear bond strength was found in Fuji Triage group (0,4 0,5 MPa). Deproteinization technique had no effect on bond strength and microleakage prior to fissure sealant applications. As a result, with advanes in technology and using different approaches there still is a need to investigate more effective materials.