On the basis of available evidence , MTA presented good marginal adaptation to dentine walls .
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate ( MTA ) with other filling material s in root-end cavities .
Sealer penetration and marginal permeability after apicoectomy varying retrocavity preparation and retrofilling material.
Apicoectomy failure is generally related to inappropriate marginal sealing of the retrocavity , which allows percolation of microorganisms and their products from root canal system to periapex . This study evaluated tubular penetration of canal sealers and marginal permeability after retrocavity irradiation with Er;Cr : YSGG laser and retrofilling with MTA or cyanoacrylate .  Twenty-two single-rooted teeth were decoronated and endodontically treated , their apical 3 mm were resected and the root ends were retroprepared with a low-speed bur .  Twenty roots were r and omly assigned to 4 groups ( n=5 ) : GI and GII -- retrofilling with MTA and cyanoacrylate , respectively ; GIII and GIV -- retrocavity irradiation with Er;Cr : YSGG laser ( 2.78 microm , 4 W , 20 Hz , 70.8 J/cm(2 ) ) and retrofilling with MTA and cyanoacrylate , respectively . The remaining 2 roots served as positive and negative controls . The analysis of rhodamine B dye infiltration ( p=0.05 ) demonstrated that laser irradiation and MTA retrofilling presented significantly higher permeability rates ( p<0.05 ) . Retrofilling with cyanoacrylate showed significantly lower permeability , either when laser was used or not on retrocavity . SEM analysis depicted more cyanoacrylate penetration through dentinal tubules when compared to MTA , suggesting a more efficient marginal sealing . Based on these results , it may be concluded that cyanoacrylate provided a less permeable retrofilling regardless of the retropreparation method , suggesting a more favorable condition to the establishment of the periapical healing
On the basis of available evidence , MTA presented good marginal adaptation to dentine walls .
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate ( MTA ) with other filling material s in root-end cavities .