Pages 769-774, Language: EnglishAguirre-Zorzano, Luis Antonio / Bayona, Juan Miguel / Remolina, Alberto / Castaños, Javier / Diez, Raul / Estefanía, EduardoOrthodontic treatment was provided after guided tissue regeneration of intrabony defects in 2 patients with periodontal disease. The new attachment obtained by guided tissue regeneration remained stable when subjected to orthodontic forces.