Abstract
Introduction: With the increasing use of composite resin as a cosmetic restorative material at the level of posterior teeth, the trend of clinical and laboratory studies to research mechanical and physical properties related to composites and modern linking systems accompanying their use; The aim is to improve the results of the use of each of them for the better. Aim of the Study: To assess the effect of applying chlorhexidine solution 2% on the forces of bonding compost with temporary dentine, by assessing the marginal leakage. Materials and Methods: The study included 40 healthy, newly extracted, temporary human molar, distributed equally and randomly to two groups, group (1) restored with composite without applying chlorhexidine solution 2%, while group (2) was filled with composites with application of chlorhexidine solution 2% for 60 seconds and after acid scratching Through them, the edge leakage was studied. The composite resin fillings are prepared and then kept it for 6 months with distilled water. The edge leakage test was done with a stereo microscope, with a 20% magnification. Results: The application of chlorhexidine 2% solution did not adversely affect the marginal leakage.
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