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   Effect of nitric oxide inhibitor and donor substances on the inflammatory process caused by endodontic irrigants  
   
نویسنده de brito l.m. ,carreira c.m. ,raldi d.p. ,lage-marques j.l. ,habitante s.m. ,saad w.a.
منبع journal of applied oral science - 2011 - دوره : 19 - شماره : 2 - صفحه:113 -117
چکیده    Nitric oxide (no) has been considered a key molecule in inflammation. objective: the aim of this study was to evaluate the effect of treatment with l-name and sodium nitroprussiate,substances that inhibit and release no,respectively,on tissue tolerance to endodontic irrigants. material and methods: the vital dye exudation method was used in a rat subcutaneous tissue model. injections of 2% evans blue were administered intravenously into the dorsal penial vein of 14 male rats (200-300 g). the no inhibitor and donor substances were injected into the subcutaneous tissue in the dorsal region,forming two groups of animals: g1 was inoculated with l-name and g2 with sodium nitroprussiate. both groups received injections of the test endodontic irrigants: acetic acid,15% citric acid,17% edta-t and saline (control). after 30 min,analysis of the extravasated dye was performed by light absorption spectrophotometry (620 nm). results: there was statistically significant difference (p<0.05) between groups 1 and 2 for all irrigants. l-name produced a less intense inflammatory reaction and nitroprussiate intensified this process. conclusions: independently of the administration of no inhibitors and donors,edta-t produced the highest irritating potential in vital tissue among the tested irrigating solutions.
کلیدواژه Inflammation; Nitricoxide; Root canal irrigants
آدرس department of dentistry,university of taubaté,taubaté,sp, Brazil, university of são paulo,são paulo,sp, Brazil, department of dentistry,university of taubaté,taubaté,sp, Brazil, department of dentistry,university of taubaté,taubaté,sp,brazil,department of dentistry,university of são paulo,são paulo,sp, Brazil, department of dentistry,university of taubaté,taubaté,sp, Brazil, department of dentistry,university of taubaté,taubaté,sp, Brazil
 
     
   
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