Long-term assessment of a modified tunneling technique for root coverage in lower anterior gingival recession: a retrospective study.

IF 2.2 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Periodontal and Implant Science Pub Date : 2025-04-01 Epub Date: 2024-10-21 DOI:10.5051/jpis.2402660133

Sungtae Kim, Hee-Seung Han, Hyunkyung Kim, Hyunjae Kim, Yang-Jo Seol, Young-Dan Cho

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引用次数: 0

Abstract

Purpose: Root coverage (RC) procedures require long-term evaluation. This study assessed the clinical validity and long-term stability of a modified tunneling technique for lower anterior gingival recession (GR) using a subepithelial connective tissue graft (SCTG) and a volume-stable collagen matrix.

Methods: Across 39 patients, 66 mandibular incisors with ≥1.0 mm of GR were examined before and after RC surgery. Clinical photographs documenting the results of RC were taken at baseline (T₀) and the most recent follow-up visit (T_l). Impressions were obtained either at baseline (T₀) or 3 weeks later (T₃). The recession depth, Miller classification, and rates of RC and complete root coverage (CRC) were assessed.

Results: This study analyzed 66 GR sites across 39 patients, with an average follow-up period of 41.3 months. Overall, the mean RC achieved was 86.2%±15.7%. Among single recessions, the RC was 85.2%±25.6% for Miller class I, 91.5%±10.4% for class II, and 79.2%±18.3% for class III. Regarding multiple recessions, the RC was 85.1%±16.2% for Miller class I, 87.0%±12.5% for class II, and 89.8%±16.0% for class III. By Miller classification, the RC was 85.1%±16.8% for class I, 88.7%±11.6% for class II, and 85.8%±17.3% for class III. Furthermore, the RC varied by follow-up duration: 72.5%±15.1% at 12 months, 90.1%±12.6% at 25-36 months, 89.0%±16.7% at 37-48 months, 91.10%±9.88% at 49-60 months, and 97.6±4.79% for longer than 61 months, with 77.8% of the last group achieving CRC. RC also differed based on the initial recession depth, at 88.0%±16.8% for 1-3 mm, 83.1%±14.1% for 3-6 mm, and 80.2%±5.04% for depths exceeding 6 mm.

Conclusions: A modified tunneling technique, utilizing SCTG and a volume-stable collagen matrix, appears to represent a reliable option for the long-term management of GR in the lower anterior region, even in cases involving multiple Miller class III GRs.

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改良隧道技术对下前龈退缩牙根覆盖的长期评估：一项回顾性研究。

目的：根覆盖（RC）手术需要长期评估。本研究评估了使用上皮下结缔组织移植物（SCTG）和体积稳定的胶原基质治疗下前龈退缩（GR）的改良隧道技术的临床有效性和长期稳定性。方法：对39例患者66颗GR≥1.0 mm的下颚切牙在RC手术前后进行检查。记录RC结果的临床照片在基线（T 0）和最近的随访（Tl）拍摄。印象是在基线（T₀）或3周后（T₃）获得的。评估了退化深度、Miller分类、RC和完全根覆盖率（CRC）。结果：本研究分析了39例患者66个GR部位，平均随访时间41.3个月。总体而言，平均RC达到86.2%±15.7%。在单次衰退中，Miller I类的RC为85.2%±25.6%，II类为91.5%±10.4%，III类为79.2%±18.3%。对于多重衰退，Miller类的RC为85.1%±16.2%，类为87.0%±12.5%，类为89.8%±16.0%。根据Miller分类，ⅰ类的RC为85.1%±16.8%，ⅱ类为88.7%±11.6%，ⅲ类为85.8%±17.3%。此外，CRC随随访时间的变化而变化：12个月时为72.5%±15.1%，25-36个月时为90.1%±12.6%，37-48个月时为89.0%±16.7%，49-60个月时为91.10%±9.88%，超过61个月时为97.6±4.79%，最后一组的77.8%达到CRC。根据初始消退深度，RC也有所不同，1-3 mm为88.0%±16.8%，3-6 mm为83.1%±14.1%，深度超过6 mm为80.2%±5.04%。结论：利用SCTG和体积稳定的胶原基质的改良隧道技术，对于下前区GR的长期治疗似乎是可靠的选择，即使涉及多个Miller III级GR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Periodontal and Implant Science DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.30

自引率

5.30%

发文量

期刊介绍： Journal of Periodontal & Implant Science (JPIS) is a peer-reviewed and open-access journal providing up-to-date information relevant to professionalism of periodontology and dental implantology. JPIS is dedicated to global and extensive publication which includes evidence-based original articles, and fundamental reviews in order to cover a variety of interests in the field of periodontal as well as implant science.