Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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Retrospective analysis of keratinized tissue augmentation using a xenogeneic collagen matrix for resolving peri-implant mucositis and peri-implantitis

  • Jung Soo Park (Department of Periodontology, Korea University Anam Hospital) ;
  • Yeek Herr (Department of Periodontology, Periodontal-Implant Clinical Research Institute, College of Dentistry, Kyung Hee University) ;
  • Jong-Hyuk Chung (Department of Periodontology, Periodontal-Implant Clinical Research Institute, College of Dentistry, Kyung Hee University) ;
  • Seung-Il Shin (Department of Periodontology, Periodontal-Implant Clinical Research Institute, College of Dentistry, Kyung Hee University) ;
  • Hyun-Chang Lim (Department of Periodontology, Periodontal-Implant Clinical Research Institute, College of Dentistry, Kyung Hee University)
  • Received : 2022.01.11
  • Accepted : 2022.05.17
  • Published : 2023.04.30
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Abstract

Purpose: The significance of keratinized tissue for peri-implant health has been emphasized. However, there is an absence of clinical evidence for the use of a xenogeneic collagen matrix (XCM) to manage peri-implant mucositis and peri-implantitis. Therefore, the purpose of this study was to investigate outcomes after keratinized tissue augmentation using an XCM for the management of peri-implant diseases. Methods: Twelve implants (5 with peri-implant mucositis and 7 with peri-implantitis) in 10 patients were included in this study. Non-surgical treatments were first performed, but inflammation persisted in all implant sites. The implant sites all showed a lack of keratinized mucosa (KM) and vestibular depth (VD). Apically positioned flaps with XCM application were performed. Bone augmentation was simultaneously performed on peri-implantitis sites with an intrabony defect (>3 mm). The following clinical parameters were measured: the probing pocket depth (PPD), modified sulcular bleeding index (mSBI), suppuration (SUP), keratinized mucosal height (KMH), and VD. Results: There were no adverse healing events during the follow-up visits (18±4.6 months). The final KMHs and VDs were 4.34±0.86 mm and 8.0±4.05 mm, respectively, for the sites with peri-implant mucositis and 3.29±0.86 mm and 6.5±1.91 mm, respectively, for the sites with peri-implantitis. Additionally, the PPD and mSBI significantly decreased, and none of the implants presented with SUP. Conclusions: Keratinized tissue augmentation using an XCM for sites with peri-implant mucositis and peri-implantitis was effective for increasing the KMH and VD and decreasing peri-implant inflammation.

Keywords

Acknowledgement

The authors wish to thank Geistlich Pharma (Wolhusen, Switzerland) for kindly supplying the Mucograft xenogeneic collagen matrix that was used in this study.

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