An experimental study of coronal microleakage after endodontic treatment

AIM:To search the theoretic basis of how to select the different materials for root canal obturation.METHODS:After routine root canal preparation,sixty-six extracted human anterior teeth were obturated with Gutta-Percha points and three different seal materials:Vitapex(GroupV),Cortisomol(GroupC) and Sealite ultra(GroupS).Quantities of coronal microleakage were detected by method of experiment of glucose microleakage.RESULTS:When Sealite ultra was used as root canal seal materials in endodontic treatment,the coronal microleakage after obturation was significantly less than the other two groups.Furthermore,time of the coronal microleakage can be detected was also later than the other two groups.CONCLUSION:The root canal sealing ability of Sealite ultra (GroupS) was better than the other two groups,so it worths to be recommended.If Vitapex and Cortisomol were used as sealing materials,it would be better that the coronal restoration should be well done quickly after root canal obturation.