INTRODUCTION: The aim of this study was to evaluate the effects of remnant root canal medicament. calcium hydroxide on the short and long term sealing ability of mineral trioxide aggregate (MTA) apical barrier. MATERIALS & METHODS: Fifty single-rooted teeth were prepared and apical resorptions were made using sulfuric acid. The teeth were allocated into two experimental groups and two... https://www.chiggate.com/biomat-sessions-sale/