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Guided Bone Regeneration Using Nonexpanded Polytetrafluoroethylene Membranes in Preparation for Dental Implant Placements—A Report of 420 Cases

Barboza, Eliane Porto DMD, MScD, DScD*; Stutz, Bianca DMD; Ferreira, Vinícius Farias DDS; Carvalho, Waldimir DMD, MScD§

doi: 10.1097/ID.0b013e3181cda72c
Clinical Science and Technology
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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.

*Associate Professor, Fluminense Federal University, Department of Periodontology, Rio de Janeiro, Brazil.

†Graduate Student, Fluminense Federal University, Department of Periodontology, Rio de Janeiro, Brazil.

‡Graduate Student, Fluminense Federal University, Department of Periodontology, Rio de Janeiro, Brazil.

§Professor, Fluminense Federal University, Department of Prosthodontics, Rio de Janeiro, Brazil.

Reprint requests and correspondence to: Eliane Porto Barboza, DMD, MScD, DScD, Avenue Presidente Wilson 165/811, Centro, Rio de Janeiro, Rio de Janeiro, Brazil, 20030-020, Phone/Fax: 55 21 2220-6940, E-mail: barbozae@uol.com.br

© 2010 Lippincott Williams & Wilkins, Inc.