Aim:The objectives of the present study were to evaluate and compare the clinical behavior of resin modified glass ionomer cement (RMGIC) on primary molars with conventional and modified cavity preparations. Methods and Materials:Forty-two children, 5-9 years of age, having bilateral initial occlusal caries on the mandibular primary second molars were selected for the study. A split mouth design was employed where conventional Class I cavities with a 90º cavosurface angle were prepared randomly on primary second molars on one side and modified cavities with a 1 mm straight bevel along the cavosurface margin on the contra-lateral side. These cavities were restored with RMGIC. The restorations were evaluated during subsequent visits, for a period of one year. Results:At the end of one year, 90% of the restorations survived in the conventional cavity group whereas 100% of the restorations survived in the modified cavity group. Conclusion: Incorporation of a bevel in Class I cavities increases the survival rate of RMGIC restorations.There was no significant difference in the clinical behavior between the two groups. However, beveling does contribute to long term clinical success of these restorations. Abstract © Seer Publishing 14Clinical Significance: Incorporation of a straight bevel in conventional cavities will improve the retention of RMGIC by increasing the bonding area and enhancing the desired properties of the material.
Soft tissue injuries are relatively common following traumatic dental injuries in children. This report describes a case of a nine year old girl who had a foreign body embedded in the lower lip due to fall, while playing. Thorough clinical examination followed by soft tissue radiographs confirmed the presence of a fractured incisal fragment, which was surgically retrieved under local anesthesia. The fragment was then reattached using a dentin bonding agent. Fragment reattachment is a realistic alternative to resin composite buildup for restoring esthetics and function of the traumatized dentition. The natural fragments can be used to ensure the restoration "ad integrum" of the dental crown by simple bonding. With expected improved bonding technology in the future, these fragments may serve for many years.
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