ABSTRACT
Since water sorption of any restorative material can result in expansion of the restoration, which would be detrimental to the restoration, it is important to limit the amount of water absorbed. In addition, solubility of restorative materials is of concern, since inorganic ions can leach into the surrounding environment resulting in breakdown of the restoration. The aim of this study was to measure and compare water sorption and solubility values of Biodentine new direct restorative material with other conventional restorative materials
Three direct restorative materials were selected for this study: Biodentine [Septodont,France], composite [masterfill], GIC[Kemdent, UK]. Ten specimens were prepared from each restorative material [n=10] using a stainless steel mold of 15 mm in inner diameter and 1 mm in thickness. Each restorative material was prepared according to manufacturer's instructions. Water sorption and solubility of each specimen was calculated by weighting the samples before and after immersion in water for 15 days and desiccation. Data were analyzed with one way ANOVA and t-test at [0.05] level of significance
One way ANOVA that, there were statistically significant differences between the tested groups [P<0.05] in both sorption and solubility values
Within the limit of this study, Biodentine restorative material showed an intermediate sorption and solubility values between Kemdent GIC restorative and Master Fill composite and due to this result the material [Biodentine] is not recommended to be used as a final direct restorative material but recommended to be used as abase only
Subject(s)
Silicates , Sorption Detoxification , Solubility , Composite Resins , Dental Restoration, PermanentABSTRACT
Microleakage at tooth/restoration interface is one of the major causes for any composite restoration failure. Composite marginal adaptation is more critical in class V Cavities where there is little or no enamel at the cervical margins, and the restoration comes in contact with cementum. This decreases adhesion considerably, facilitating shrinkage of the material in occlusal direction leaving a gingival gap. The aim of this study was to evaluate microleakage of the new self adhesive composite "Fusio Liquid Dentin" in Class V cavities with enamel and dentin. Standardized thirty class V cavities were prepared on buccal and lingual surfaces of 15 human premolar teeth, with occlusal and gingival margins at the enamel and cementum/dentin levels respectively. Specimens were divided into 3 groups with 10 samples each. Group 1: 10 cavities restored with Fusio TM Liquid Dentin [FLD] -A2 shade [self adhesive flowable composite, Pentron Clinical Technologies, Wallingford, CT, USA] without etching and bonding, Group 2: 10 cavities restored with FLD -A2 shade with etching only and Group 3: 10 cavities restored with FLD -A2 shade with etching and bonding. After being stored in distilled water and finished, the teeth were thermocycled, immersed in a buffered 2% aqueous solution of methylene blue for 2 hours and then embedded in clear acrylic resin blocks. They were sectioned and the depth of tracer penetration was measured with periodontal probe and magnifying lens. The results were analyzed using one way ANOVA and t-test at 0.05 level of significance. There was a statistically significant difference between the six groups being tested. All the composite materials being tested showed statistically insignificant differences in occlusal dye penetration [P>/=0.05] and significant differences in gingival dye penetration [P
ABSTRACT
Solubility of resin-based composite materials is of great importance in restorative dentistry, since inorganic ions present as fillers within composites can leach into the surrounding environment resulting in breakdown of the restoration. The aim of this study was to evaluate and compare solubility values of three different nanofilled light-activated composites with other four conventional composite dental materials. Seven commercial light-activated composite materials: Tetric Evo Ceram, Premise, Herculite, Z100, Z250, P60, Supreme XT. Ten disc specimens were prepared for each composite material using a stainless steel mold with 15 mm in inner diameter and 1 mm in thickness. The curing of each composite specimen was divided into five segments and each segment was photo-cures for 40 seconds. Water solubility of different materials was calculated by means of weighting the samples before and after water immersion [15 days] and desiccation. Data were analyzed by one-way ANOVA at 5% level of significance. Tetric Evo Ceram composite showed the lowest solubility values, while Premise composite dis-played the highest values. Solubility values of the tested composites did not show significant differences among them [P>0.05]. All the composites being tested in this study exhibited solubility values within the acceptable limits and composite composition is insignificantly influences its water solubility values