%0 Journal Article
%T An¨˘lise comparativa da microinfiltra  o marginal em retrobtura  es com MTA e cimento ion mero de vidro
%A Ingeburg Hellwig
%A Cl¨˘udia Marcela Hernandes Cancino
%A Andrea Cabral de Mello Vanzin
%A Jo£żo Batista Blessmann Weber
%J Stomatos
%D 2007
%I Universidade Luterana do Brasil
%X The purpose of periapical surgery is to remove persistent periapical disease. This procedureconsists of exposure and excision of the affected dental apex, root-end cavity preparation, andretrograde filling with a sealing material. This in vitro study used apical microleakage testing,0.2% Rhodamine B dye penetration, and computer-assisted morphometry to evaluate 30endodontically-treated, single-rooted permanent human teeth divided in three groups. Specimens in the three groups underwent apicoectomy with bur at a 90-degree cutting angle, ultrasonic root-end cavity preparation, and retrograde filling with one of three sealing materials: group A   MTAAngelus ; group B   Vitremer ; group C   ProRoot  MTA. Vitremer  had the best results inthe comparative analysis. The two MTA materials had similar results. Results for the threematerials under study were satisfactory for apical retrograde filling.
%U http://www.redalyc.org/articulo.oa?id=85002505