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Collagen Strip Technique: A Novel Approach for Ridge Preservation and Concomitant Oroantral Communication Management After Implant Explantation
Author(s) -
Cheng GuoLiang,
Tatakis Dimitris N.
Publication year - 2020
Publication title -
clinical advances in periodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.182
H-Index - 2
eISSN - 2163-0097
pISSN - 2573-8046
DOI - 10.1002/cap.10092
Subject(s) - medicine , maxillary sinus , implant , dentistry , sinus (botany) , alveolar ridge , perforation , sinus lift , buccal administration , ridge , osseointegration , dental implant , surgery , orthodontics , materials science , paleontology , botany , metallurgy , punching , biology , genus
This case report introduces a technique for managing oroantral communication (OAC) using a collagen membrane strip to repair the perforated sinus membrane and simultaneously graft the alveolar ridge. Case Presentation A 55‐year‐old Asian male presented for a second‐opinion consultation regarding an endosseous dental implant that had been placed overly subcrestal at #13 edentulous site. The 8 mm fixture had been placed 3 to 4 mm subcrestally with more than half the implant length into the maxillary sinus. The patient stated that no sinus augmentation procedure had been performed. The implant was considered to be non‐restorable and treatment planned for explantation with ridge preservation. Explantation revealed a sinus perforation with OAC. A collagen membrane strip (30 × 6 mm) was folded into a U‐shape, to hold bone allograft for ridge preservation, and placed with the bottom of the U‐shape level with the sinus floor and the ends extending to the buccal and palatal, beyond the crest. A second collagen membrane covered the graft at ridge crest level, followed by primary closure. Implant placement (4.1 × 10 mm) with indirect sinus augmentation was performed in 6 months. The implant was uncovered and subsequently restored following a 5‐month osseointegration period. The 13‐month follow‐up examination revealed successful outcomes, with normal clinical and radiographic parameters. Conclusion This novel technique achieved the dual goals of ridge preservation and repair of a sinus membrane perforation simultaneously after implant explantation in the posterior maxilla. It further allowed a successful implant placement with simultaneous sinus augmentation and subsequent restoration.