Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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Periodontal biotype modification using a volume-stable collagen matrix and autogenous subepithelial connective tissue graft for the treatment of gingival recession: a case series

  • Kim, Hyun Ju (Department of Periodontics, Seoul National University Dental Hospital) ;
  • Chang, Hyeyoon (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry) ;
  • Kim, Sungtae (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry) ;
  • Seol, Yang-Jo (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry) ;
  • Kim, Hyeong-Il (Department of Restorative Dentistry, University at Buffalo School of Dental Medicine)
  • Received : 2018.10.19
  • Accepted : 2018.12.17
  • Published : 2018.12.31
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Abstract

Purpose: The purpose of this study was to propose a technique for periodontal biotype modification through thickening of the entire facial aspect using a volume-stable collagen matrix and autogenous subepithelial connective tissue graft (CTG) for the treatment of gingival recession. Methods: Four systemically healthy patients showing Miller class I or class II gingival recession in the mandibular incisor area were included in this study. Full-mouth scaling and root planing procedures were performed at least 4 weeks prior to periodontal plastic surgery. A split-thickness flap with a horizontal intrasulcular incision and 2 vertical incisions was used in cases 1-3, and the modified tunnel technique was used in case 4 for coronal advancement of the mucogingival complex. After the exposed root surfaces were debrided thoroughly, double-layered volume-stable collagen matrix was placed on the apical part of the recession and a subepithelial CTG harvested from the palatal area was placed on the coronal part. The amount of root coverage at 3 months postoperatively was evaluated in cases 1-3, and facio-lingual volumetric changes were analyzed in cases 1 and 2. Results: Healing was uneventful in all 4 cases and complete root coverage was shown in cases 1-3. In case 4, reduction of gingival recession was observed at 3 months after surgery. In cases 1 and 2, a comparison of stereolithographic files from the preoperative and postoperative time points demonstrated that the entire facio-lingual volume had increased. Conclusions: The surgical technique suggested herein, using a volume-stable collagen matrix and autogenous subepithelial CTG, may be an effective method for periodontal biotype modification through thickening of the entire facial aspect for the treatment of gingival recession.

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