Abstract
Manufacturers of certain root canal sealers strongly recommend their perfect drying, to help achieve the claimed sealing ability and the adhesiveness to dentin walls [7]. [...]isopropyl alcohol drying has been suggested by many researchers to offer clean, well-dried root canals and to help penetration of the sealing cement into the dentinal tubules, which could be positively reflected on the bond strength of the root canal fillings [9,11-14]. [...]the current study aimed at evaluating the effect of obtaining extra canal drying on the bonding efficacy of chemicallydifferent sealing materials to root canal dentin. The presence of disalicylate in the liquid composition of the used Ca(OH)2 formulation renders the setting process and the adhesiveness of the material less sensitive to excessive dryness [25,26]. [...]some SEM findings showed a less depth of penetration of ZOE-based sealers to radicular dentinal tubules, compared with either Ca(OH)2 and resin-based sealers, which could be related to materials' thixotropic characteristics [26,27]. From the afore-mentioned information, it is obvious that using isopropyl alcohol to dry root canals before obturation could affect the bonding quality of the utilized endodontic sealers; however, the effect of this procedure could vary according to the chemistry and characteristics of the used sealer materials. [...]evaluating the influence of this drying protocol on the bonding performance of other contemporary bioactive sealers is recommended for further studies.