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Volume 15 , Issue 4
July/August 2000
Pages 550–558

Healing of Dehiscence Defects at Delayed-Immediate Implant Sites Primarily Closed by a Rotated Palatal Flap Following Extraction

Carlos E. Nemcovsky, DMD, Zvi Artzi, DMD

PMID: 10960989

In 21 patients, 28 maxillary teeth were extracted because of periapical or periodontal infection, root fracture, or untreatable caries. A rotated palatal flap procedure was used to achieve primary soft tissue closure over extraction sites. At 5 to 7 weeks postextraction, 28 implants were placed. Buccal dehiscence-type defects were treated with guided bone regeneration procedures using bovine bone mineral and resorbable collagen membranes. Mean defect area at the time of implant placement (23.7 mm², SD 11.49) was significantly reduced at uncovering (0.7 mm², SD 0.99). The mean percentage of defect reduction (clinical bone fill) was 97% (SD 4.26). Implants placed in compromised sites shortly postextraction according to the presented 2-stage protocol gave good short-term clinical results. (INT J ORAL MAXILLOFAC IMPLANTS 2000;15:550–558) Key words: alveolar bone loss, dental implants, endosseous dental implantation, guided tissue regeneration

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