![shutterstock_2296216-root canal xray](https://www.nationalelfservice.net/cms/wp-content/uploads/2011/07/shutterstock_2296216-root-canal-xray-150x150.jpg)
This review of the efficiency of orifice barriers in preventing coronal microleakage after root canal treatment included 18 in-vitro studies. The findings suggest the placement of an orifice barrier helped prevent coronal leakage. However the relevance of this to the clinical environment remains to be examined.
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