To evaluate and compare the marginal leakage in class V cavities restored with three different tooth colored restorative materials using dye penetration system. Materials and methods: Thirty extracted premolars were randomly selected for this study. Standardized classV cavities were prepared and then divided into three equal groups. Group I was restored with nano filled composite, Group II was restored with hybrid composite and group III with polyacid modified composite. They were then subjected to thermo cycling, immersed in 2% methylene blue dye, sectioned and examined under stereomicroscope. Dye penetration for each section was recorded and data was analyzed. Results: Lowest micrileakage was recorded in group I and highest leakage recorded in Group III.Conclusion: Nanofilled composite resins provide a better sealing than hybrid and polyacid modified composites. .

Dentinogegesis imperfecta (DI) represents a group of hereditary conditions that are characterized by abnormal dentin formation. These conditions are genetically and clinically heterogenous and can affect only the teeth or can be associated with the condition Osteogegesis imperfecta. The Osteogegesis imperfecta (OI) or the disease of fragile bones is a hereditary pathology affecting different tissues especially the bone. The teeth of DI cases wear more easily and excessively and also more susceptible to dental caries compared to normal teeth. Early prosthodontic rehabilitation can prevent or delay the wear as well as loss of teeth in DI. Herewith, we present case report of 10yr old boy with discolored, severely attrited permanent teeth with sinus openings. Along with systemic abnormalities like blue sclera, bow legs, protruded sternum. The case was diagnosed as Dentinogegesis imperfecta type I and discussed in this case report.

Odontoma is a hamartoma of odontogenic origin which contains both epithelial and mesenchymal cells exhibiting complete differentiation with enamel and dentine laid down in abnormal position. It may result from the extraneous buds of odontogenic epithelial cells from the laminadura, enamel, dentin or cementum. The etiology of odontoma is unknown it may due to trauma, infection or genetic transmission. Treatment includes simple excision with no recurrence noted. The aim of this paper is to present a thorough review on the etiology, clinical presentation, histopathological features and treatment aspects of odontomas.