Open AccessGuided Bone Regeneration Using Nonexpanded Polytetrafluoroethylene Membranes in Preparation for Dental Implant Placements—A Report of 420 Cases
Author(s) -
Eliane Porto Barboza,
Bianca Stutz,
Vinícius Farias Ferreira,
Waldimir Carvalho
Publication year - 2010
Publication title -
implant dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.538
H-Index - 65
eISSN - 1538-2982
pISSN - 1056-6163
DOI - 10.1097/id.0b013e3181cda72c
Subject(s) - dentistry , alveolar ridge , buccal administration , implant , polytetrafluoroethylene , dental implant , barrier membrane , soft tissue , medicine , membrane , surgery , materials science , chemistry , biochemistry , metallurgy
The biologic principle of guided bone regeneration has been successfully used to prevent bone loss in extraction sites. This study comprises 420 cases of alveolar ridge maintenance in preparation for dental implant placements. Nonexpanded polytetrafluoroethylene membranes were positioned over all extraction sites and left intentionally exposed. Lyophilized mineralized bone allografts were used to prevent membrane collapse when buccal bone walls were lost. Membranes were removed at week 4. At the time of implant placements, all sites presented soft tissue compatibility with keratinized gingiva. The mucogingival junction position seemed to be preserved. Exposed nonexpanded polytetrafluoroethylene membranes associated, or not, with bone graft provide tissue formation suitable for implant placement.