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Objective <p>There is limited evidence about the short- and long-term outcomes of the laterally closed tunnel (LCT) technique for gingival recession (GR) treatment. This clinical trial aimed to evaluate the short-term clinical effectiveness of and patient-reported outcomes of the LCT technique when used in combination with either connective tissue graft (CTG) or collagen matrix (CM).</p> Materials and methods <p>A total of forty patients were randomly assigned to either the control group (LCT + CTG) or the test group (LCT + CM) for localized GR type 1 treatment. Primary outcome measures included recession depth (RD), recession width (RW), root coverage percentages (MRC%), and complete root coverage percentage (CRC%). Secondary outcomes included gingival thickness (GT), keratinized tissue width (KTW), clinical attachment level (CAL), attached gingiva width (AGW), root coverage esthetic score (RES), and patient-reported outcome measures (PROMs). Clinical evaluations were performed at baseline, 3 months, and 6 months after treatment.</p> Results <p>At both 3 and 6 months postoperatively, the primary outcomes (RD, RW, MRC%, and CRC%) showed significant improvement (MRC% 93.98 ± 8.58% and 87.24 ± 13.70%, and CRC% 90% after 6 months; <i>p</i> &lt; 0.001). All the secondary outcomes, including (GT, KTW, CAL, AGW, RES, and PROMs were also significantly improved at the end of the study in both groups (<i>p</i> &lt; 0.001).</p> Conclusion <p>The LCT technique proved to be an effective technique for localized recession type 1 treatment when used in combination with CTG or CM.</p> Clinical relevance <p>Both grafting materials used in combination with the LCT technique resulted in favorable short-term clinical and esthetic outcomes for localized gingival recession.</p> Trial registration <p>The current clinical trial was retrospectively registered in ClinicalTrials.gov (ID: NCT06065774) and initially released in 13-09-2023 and finally released in 18-11-2024. <a href="https://register.clinicaltrials.gov/prs/beta/studies/S000CV1L00000057/recordSummary">https://register.clinicaltrials.gov/prs/beta/studies/S000CV1L00000057/recordSummary</a>.</p>

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Comparative evaluation of the laterally closed tunnel technique with connective tissue graft and collagen matrix for treating localized type 1 gingival recession: a randomized, controlled clinical trial

  • 期刊论文

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  • 发表日期：

    2026年1月6日

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  • Ahmed ElBana,
  • Wafaa Saleh,
  • Jilan Youssef

摘要

Objective

There is limited evidence about the short- and long-term outcomes of the laterally closed tunnel (LCT) technique for gingival recession (GR) treatment. This clinical trial aimed to evaluate the short-term clinical effectiveness of and patient-reported outcomes of the LCT technique when used in combination with either connective tissue graft (CTG) or collagen matrix (CM).

Materials and methods

A total of forty patients were randomly assigned to either the control group (LCT + CTG) or the test group (LCT + CM) for localized GR type 1 treatment. Primary outcome measures included recession depth (RD), recession width (RW), root coverage percentages (MRC%), and complete root coverage percentage (CRC%). Secondary outcomes included gingival thickness (GT), keratinized tissue width (KTW), clinical attachment level (CAL), attached gingiva width (AGW), root coverage esthetic score (RES), and patient-reported outcome measures (PROMs). Clinical evaluations were performed at baseline, 3 months, and 6 months after treatment.

Results

At both 3 and 6 months postoperatively, the primary outcomes (RD, RW, MRC%, and CRC%) showed significant improvement (MRC% 93.98 ± 8.58% and 87.24 ± 13.70%, and CRC% 90% after 6 months; p < 0.001). All the secondary outcomes, including (GT, KTW, CAL, AGW, RES, and PROMs were also significantly improved at the end of the study in both groups (p < 0.001).

Conclusion

The LCT technique proved to be an effective technique for localized recession type 1 treatment when used in combination with CTG or CM.

Clinical relevance

Both grafting materials used in combination with the LCT technique resulted in favorable short-term clinical and esthetic outcomes for localized gingival recession.

Trial registration

The current clinical trial was retrospectively registered in ClinicalTrials.gov (ID: NCT06065774) and initially released in 13-09-2023 and finally released in 18-11-2024. https://register.clinicaltrials.gov/prs/beta/studies/S000CV1L00000057/recordSummary.