to evaluate the ultimate compressive strength of five composite resins after 1 hour, 24 hours, 7 days and 1 month. twenty four cylindrical 4 mm×8mm specimens of each commonly used composite resins in posterior region (nulite-f , z250 , p60, biscore, tetric ceram hb) were prepared. each group of composite resins were divided into four time groups of 1 h, 24 h, 7 days and 1 month. all of specimen...

introduction: although composite resins have improved greatly since their introduction, microleakage is one of the most frequently encountered problems. this study compared the effects of different monomer systems and layering techniques on the bacterial leakage of cl i composite resin restorations. methods: eighty-two sound human third molars were used. the teeth were randomly divided into six...

Advances in microsurgical techniques and immunomodulatory protocols have contributed to the expansion of vascularized composite allotransplantation (VCA) with very encouraging immunological, functional, and cosmetic results. Rejection remains however a major hurdle that portends serious threats to recipients. Rejection features in VCA have been described in a number of studies, and an internati...

Future sea-level rises on the urban waterfront of coastal and riverbanks cities will not be uniform. The impact floods is exacerbated by population density in nearshore areas, combined with land conversion urbanization, vulnerability towns public spaces particular significantly increased. empirical analysis a selected number projects, namely winners Mies Van Der Rohe Prize, highlighted differen...

India is a country of rivers. Sundarban the world’s largest deltaic region, which also part Ganga region. Highly populated this region frequently faced intensive floods. The objective paper to give notion about potential embankment zone along Vidyadhari River. Changes in riverbanks since 1972 have been highlighted through GIS and Remote Sensing Applications. Through paper, erosional depositiona...

objectives: composite repair is a minimally invasive and conservative approach. this study aimed to evaluate the effect of an additional hydrophobic resin layer on the repair shear bond strength of a silorane-based composite repaired with silorane or methacrylate-based composite. materials and methods: sixty bar-shaped composite blocks were fabricated and stored in saline for 72 hours. the surf...