Holland, Roberte [UNESP]2014-05-272014-05-272001-12-01Journal of Endodontics, v. 27, n. 4, p. 281-284, 2001.0099-2399http://hdl.handle.net/11449/66655This study was conducted to observe the healing process of intentional lateral root perforation repaired with mineral trioxide aggregate (MTA). Forty-eight root canals of dogs' teeth were instrumented and filled. After partial removal of the filling, an intentional perforation was made with a bur in the lateral area of the root. The perforations were repaired with MTA or Sealapex (control group). Histological analysis occurred 30 and 180 days after treatment. Results showed no inflammation and deposition of cementum over MTA in the majority of the specimens. In the 180-day period, Sealapex exhibited chronic inflammation in all the specimens and slight deposition of cementum over the material in only three cases. In conclusion, MTA exhibited better results than the control group. Copyright © 2001 by The American Association of Endodontists.281-284engaluminum derivativecalcium derivativecalcium hydroxidemineral trioxide aggregateoxideroot canal filling materialsalicylic acid derivativesealapexsilicateanimalcementumconnective tissuedogdrug combinationendodonticsfollow upgiant cellinflammationinjuryinstrumentationmacrophagepathologyperiodontal ligamenttooth pulptooth rootwound healingAluminum CompoundsAnimalsCalcium CompoundsCalcium HydroxideConnective TissueDental CementumDental Pulp CavityDogsDrug CombinationsFollow-Up StudiesGiant CellsInflammationMacrophagesOxidesPeriodontal LigamentRoot Canal Filling MaterialsRoot Canal PreparationSalicylatesSilicatesTooth RootWound HealingArtigo10.1097/00004770-200104000-00011WOS:000167833100009Acesso restrito2-s2.0-0035317522