SIGNIFICANCE This study did not identify clear advantages of using the first generation of ormocer-based fillings rather than conventional composites .
OBJECTIVES In-vitro experiments on  ormocers ( ORganically MOdified CERamics )  have provided controversial results .
Consequently , the objectives of this meta- analysis were to ( 1 ) compare clinical performances of first generation ormocers versus conventional composite restorations  , ( 2 ) explore the influence of various clinical factors and the impact of the quality of studies on published results .
A Comparative Evaluation of Marginal Leakage of Different Restorative Materials in Deciduous Molars: An in vitro Study
ABSTRACT Context : Microleakage around dental restorative material s is a major problem in clinical dentistry . Inspite of many new restorative material s available in the market very few actually bond to the tooth surface . Aims : The aims of this study were : ( 1 ) To evaluate and compare the marginal leakage of newer restorative material s viz colored compomer , ormocer , giomer and RMGIC in class I restoration of deciduous molars . ( 2 ) To compare the microleakage scores between the groups of : Colored compomer and ormocer , giomer and RMGIC , ormocer with giomer and RMGIC , giomer with RMGIC . Material s and methods : A total of 40 primary molars were r and omly divided into four groups of 10 each . Class I cavities were prepared and the cavities were restored with colored compomer ( Group A ) , Ormocer ( Group B ) , Giomer ( Group C ) and RMGIC ( Group D ) . The teeth were thermocycled and subjected to 0.5 % basic fuchsin dye penetration followed by sectioning . The cut sections were evaluated under a stereomicroscope and the data was subjected to statistical analysis . Statistical analysis used : Mann-Whitney U test and Student t-test . Results : No significant difference was observed when colored compomer was compared to ormocer , giomer and RMGIC . Ormocer showed significantly lower microleakage when compared to giomer . However , no significant difference was observed when ormocer was compared to RMGIC . No significant difference between giomer and RMGIC was found . Conclusion : Ormocer has proven to be an excellent restorative material as it showed least microleakage followed by colored compomer , giomer and RMGIC in increasing order . How to cite this article : Yadav G , Rehani U , Rana V. A Comparative Evaluation of Marginal Leakage of Different Restorative Material s in Deciduous Molars : An in vitro Study . Int J Clin Pediatr Dent 2012;5(2):101 - 107
SIGNIFICANCE This study did not identify clear advantages of using the first generation of ormocer-based fillings rather than conventional composites .
OBJECTIVES In-vitro experiments on  ormocers ( ORganically MOdified CERamics )  have provided controversial results .
Consequently , the objectives of this meta- analysis were to ( 1 ) compare clinical performances of first generation ormocers versus conventional composite restorations  , ( 2 ) explore the influence of various clinical factors and the impact of the quality of studies on published results .