Aesthetics Dental fluorosis a b s t r a c t Porcelain laminate restorations are one of the most successful treatment modalities for cosmetic improvement of unsightly anterior teeth. Porcelain veneers within reason allow for the alteration of tooth position, shape, size and color. They require a minimal amount of tooth preparation. This case report describes the management of a case of dental fluorosis and unaesthetic gingival contours by gingival reshaping and final esthetic rehabilitation with porcelain laminates.

This clinical report describes a multidisciplinary approach for the rehabilitation of a young patient with mobile and missing front teeth. The objectives of the treatment were to eliminate tooth mobility and replacing missing tooth, while enhancing aesthetics and restoring masticatory function. Treatment included placement of endodontic stabilizer and rehabilitating missing tooth with fixed partial denture and gingival porcelain to satisfy the patient's aesthetic and functional expectations.

Aims and objectives: To evaluate and compare the time dependent dimensional accuracy of polyvinyl siloxane impressions. Materials and methods:A brass master die containing two identical posts simulating two complete crown tapered abutment preparation was served as a standardized master model. Impressions were made with polyvinyl siloxane materials (monophase and regular body) using a brass made custom tray. The impressions were poured at intervals of 75 min, 24 hours, 48 hours and 1 week, Interabutment and intraabutment distance were measured in the recovered stone dies using a profile projector with an accuracy of 0.001mm. Results:Results of this study indicated that the casts made were dimensionally accurate and the polyvinyl siloxane silicones are dimensionally stable impressions for one week period. Conclusion:Delayed pouring of the impressions at four different time periods did not significantly affect the accuracy of the casts produced.