Periodontal biotype modification using a volume-stable collagen matrix and autogenous subepithelial connective tissue graft for the treatment of gingival recession: a case series
김현주, 장혜윤, 김성태, 설양조, 김형일,
소속 상세정보
김현주 ( Kim Hyun-Ju ) - Seoul National University Dental Hospital Department of Periodontics
장혜윤 ( Chang Hye-Yoon ) - Seoul National University School of Dentistry Department of Periodontology
김성태 ( Kim Sung-Tae ) - Seoul National University School of Dentistry Department of Periodontology
설양조 ( Seol Yang-Jo ) - Seoul National University School of Dentistry Department of Periodontology
김형일 ( Kim Hyeong-Il ) - University at Buffalo School of Dental Medicine Department of Restorative Dentistry
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.
키워드
Connective tissue; Gingival recession; Transplantation
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