Secondary closure of an extraction socket using the double-membrane guided bone regeneration technique with immediate implant placement.
10.5051/jpis.2011.41.5.253
- Author:
Jeong Ho YUN
1
;
Choong Man JUN
;
Nam Sik OH
Author Information
1. Department of Dentistry, Inha University School of Medicine, Incheon, Korea. yunjh@inha.ac.kr
- Publication Type:Case Report
- Keywords:
Bone regeneration;
Dental implantation;
Tooth socket
- MeSH:
Bacteria;
Bone Regeneration;
Collagen;
Dental Implantation;
Dental Implants;
Keratins;
Membranes;
Microscopy, Electron, Scanning;
Mucous Membrane;
Osseointegration;
Polytetrafluoroethylene;
Surgical Instruments;
Tooth;
Tooth Socket;
Transplantation, Homologous
- From:Journal of Periodontal & Implant Science
2011;41(5):253-258
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: Immediate implantation presents challenges regarding site healing, osseointegration, and obtaining complete soft-tissue coverage of the extraction socket, especially in the posterior area. This last issue is addressed herein using the double-membrane (collagen membrane+high-density polytetrafluoroethylene [dPTFE] membrane) technique in two clinical cases of posterior immediate implant placement. METHODS: An implant was placed immediately after atraumatically extracting the maxillary posterior tooth. The gap between the coronal portion of the fixture and the adjacent bony walls was filled with allograft material. In addition, a collagen membrane (lower) and dPTFE membrane (upper) were placed in a layer-by-layer manner to enable the closure of the extraction socket without a primary flap closure, thus facilitating the preservation of keratinized mucosa. The upper dPTFE membrane was left exposed for 4 weeks, after which the membrane was gently removed using forceps without flap elevation. RESULTS: There was considerable plaque deposition on the outer surface of the dPTFE membrane but not on the inner surface. Moreover, scanning electron microscopy of the removed membrane revealed only a small amount of bacteria on the inner surface of the membrane. The peri-implant tissue was favorable both clinically and radiographically after a conventional dental-implant healing period. CONCLUSIONS: Secondary closure of the extraction socket and immediate guided bone regeneration using the double-membrane technique may produce a good clinical outcome after immediate placement of a dental implant in the posterior area.
