Purpose:
The aim of the study was to emphasize the compressive strength and flexural strength of glass-ionomer cement (GIC)–gold hybrid, conventional GIC, and resin-modified GIC (RMGIC).
Methodology:
Three GIC materials were used in the study: group A: GC–gold hybrid (Gold Label hybrid Universal Restorative), group B: type II conventional GIC, and group C: RMGIC. A total of 120 cylindrical test specimens of dimensions 4 mm diameter × 6 mm height were prepared from a custom-made Teflon mold according to respective study groups. The specimens prepared were then stored in 20 mL of deionized water at 37°C for 3 h daily for 30 days, and the solutions were changed every week, after which they were tested for compressive strength and flexural strength by using a universal force testing machine. All the results were analyzed by SPSS software and were subjected to statistical analysis using ANOVA followed by the Bonferroni
post-hoc
test.
Results:
The mean compressive strength was the highest for group A and lowest for group B. Similarly, the mean flexural strength was the highest for group A and lowest for group B.
Conclusion:
The conclusions can be drawn from this
in-vitro
study that the compressive strength and flexural strength of GC–gold hybrid were greater than those of RMGIC and conventional GIC.
Aims: The scientific case report aims to show recent technique of minimally invasive procedure for aesthetic resolution in moderate to severe fluorosis affected teeth.
Presentation of Case: A clinical case of severe fluorosis was treated with microabrasion followed by resin infiltration. A commercial resin was applied on the facial surfaces of the anterior teeth resulting in masking of spots and re-establishing color uniformity.
Discussion: The procedure proved to be a good option to mask spots associated with moderate to severe fluorosis. Moreover, it is a relatively quick, inexpensive and minimally invasive treatment.
Conclusion: This case report demonstrates that the microabrasion and resin infiltration technique is an effective conservative aesthetic treatment. It minimizes an individual’s tooth discoloration when diagnosed with moderate to severe levels of dental fluorosis and has shown a good outcome even after twelve months.
Non-carious cervical lesions (NCCL) are characterized by a loss of hard dental tissue near the cement-enamel-junction. Commonly, their shape is like a wedge with the apex pointing inwards. Other times, they appear as regular depressions, like a dome or a cup. Their etiology seems to be related to different factors: hexogen and endogen acids, mechanical abrasive action, tooth flexion under axial and non-axial loads. Moreover, it seems that a fundamental role is ascribable to tooth bending phenomena due to the strength components parallel or oblique to the occlusal level, which occur during the normal function as well as during Para functions. The frequent therapeutic failures are probably due to the same factors causing the onset of the original lesion. Several materials have been proposed to restore NCCL: amalgam (abandoned) glass-ionomer cements, composers, and composite resins. Early failures of these restorations have often been reported in the literature, probably due to the same factors which originally caused the lesions. Further investigations are required to determine more reliable restorative therapies.
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