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Volume 35 , Issue 5
September/October 2015
Pages 647-653

Reentry After Combined Surgical Resective and Regenerative Therapy of Advanced Peri-implantitis: A Retrospective Analysis of Five Cases

Frank Schwarz, Prof Dr Med Dent/Gordon John, Dr Med Dent/Jürgen Becker, Prof Dr Med Dent

PMID: 26357694
DOI: 10.11607/prd.2320

This retrospective analysis of five reentry cases reports on the clinical defect healing after combined surgical resective/regenerative therapy of advanced peri-implantitis. A second surgery was necessary because of a clinical need for additional treatment procedures at the respective implant sites after healing periods of 8 months to 6.5 years. All patients underwent the same standardized procedure including access flap surgery, implantoplasty at bucally and supracrestally (> 1 mm) exposed implant parts, surface decontamination, and augmentation of the intrabony (Class I) components using a natural bone mineral and a native collagen membrane. Clinical defect resolution (DR) of the Class I component was evaluated. In two patients, clinical and radiographic signs suggested a reinfection (ie, case 3—mesial aspect; case 5—mesial and distal aspects). Mean DR values ± standard deviation were 59.4% ± 47.59% (95% confidence interval [CI], 0.31%–118.49%). When infected aspects were excluded, resulting values were 85.76% ± 4.86% (95% CI, 78.02%–93.50%). The presented surgical procedure was associated with a clinically important DR in advanced peri-implantitis defects.

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