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   ex vivo comparison of the discoloration potential of two endodontic sealers in human incisors  
   
نویسنده tour savadkouhi s. ,esnaashari e. ,dowlatabadi r. ,saati k. ,kharazifard mj.
منبع journal of islamic dental association of iran - 2018 - دوره : 30 - شماره : 1 - صفحه:15 -20
چکیده    background and aim: tooth discoloration induced by endodontic materials is a common finding which can impair the aesthetic outcome. the aim of this study was to compare the coronal discoloration induced by well-root st and ah26 root canal sealers by using the easyshade ® colorimeter.materials and methods: forty-five intact maxillary central incisors were involved in this experimental study. the prepared specimens were randomly distributed in experimental and control groups as follows: group 1 (well-root st, n=15), group 2 (ah26, n=15), positive control group (amalgam, n=5), negative control group1 (guttapercha, n=5), and negative control group 2 (distilled water, n=5). in order to evaluate the discoloration rate ( δe), the easyshade ® spectrophotometer was used at one and six months post-obturation. analysis of variance (anova) was used to compare color changes in the groups at the mentioned time intervals.results: the difference between the experimental groups (well-root st and ah26) and the negative control groups was not statistically significant (p=0.99) at one and six months after obturation. however, the difference between the experimental groups and the positive control group was significant (p=0.000). the difference between the positive control group and the negative control groups was also significant (p=0.000).conclusion: the results of the current study indicate that both experimental sealers (well-root st and ah26) have minimal discoloration effects and can be used safely in the aesthetic zone.
کلیدواژه tooth discoloration ,root canal filling materials ,esthetics ,dental
آدرس islamic azad university, dental branch, department of endodontics, ایران, islamic azad university, dental branch, department of endodontics, ایران, islamic azad university, dental branch, ایران, islamic azad university, dental branch, department of operative dentistry, ایران, tehran university of medical sciences, dentistry research institute, dental research center, ایران
 
 

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