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Volume 15 , Issue 6
November/December 1995

Pages 591-598

Gingival recession and exposure of barrier membrane: Effect on guided tissue regeneration of Class II furcation defects


PMID: 9601256
DOI: 10.11607/prd.00.0147

The purpose of the present study was to evaluate the effect of barrier membrane exposure on the success of guided tissue regeneration in Class II furcation defects. Twenty-six subjects with mandibular Class II furcation defects received initial periodontal therapy followed by guided tissue regeneration surgery. The membrane was placed and the flaps were repositioned so that the membrane was totaly submerged. Membranes were removed 4 to 6 weeks later, at which time the extent of their exposure was recorded. An overall improvement in all clinical parameters was observed for all subjects 1 year after surgery. Half of the patients had experienced no membrane exposure, while the other 13 subjects had experienced mild to pronounced exposure; both groups showed similar improvement in all clincal and surgical parameters. In light of the comparable results obtained in exposed sites, and the anatomic difficulties sometimes encountered in covering a membrane completely,in some of these cases the membrane may be left only partially submerged, This approach will allow for tighter occlusal seal of the tooth-membrane interface and preserveation of the keratinized gingiva.

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