Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The goal of this clinical trial is to learn if the combined bilaminar tunnel technique works to treat anatomically difficult gingival recessions. It will also explore whether anatomical factors are associated with root coverage outcomes. The main questions it aims to answer are:
Does the combined bilaminar tunnel technique improve root coverage outcomes in patients with anatomically difficult gingival recessions? Are specific anatomical factors associated with root coverage outcomes after the combined bilaminar tunnel technique?
Participants will:
Receive root coverage surgery using the combined bilaminar tunnel technique Visit the clinic for follow-up evaluations after surgery Receive clinical measurements to assess gingival recession and root coverage outcomes Receive radiographic evaluation to assess anatomical characteristics, if clinically indicated or available
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Patients who received root coverage surgery with combined bilaminar tunnel technique | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| mucogingival surgery | Procedure | Participants will receive root coverage surgery using the combined bilaminar tunnel technique for the treatment of gingival recession. The procedure initiates with a partial-thickness flap at the sites with the most severe recession with tunnelled coronally advanced flap(tCAF), extending from the coronal margin to the mucogingival junction (MGJ). For adjacent teeth, intrasulcular incisions are made to prepare a full-thickness flap using a tunnel knife. A de-epithelialized connective tissue graft is harvested and stabilized at the coronal portion of the recipient site to facilitate root coverage. Simultaneously, a volume-stable collagen matrix (VSCM) is placed apically within the partial-thickness flap to fill bone concavities and reduce tissue retraction forces during healing. |
| Measure | Description | Time Frame |
|---|---|---|
| mean root coverage and complete root coverage rate | Mean root coverage will be calculated as the percentage reduction in gingival recession depth from baseline to the 6 month after receiving the treatment. Gingival recession depth will be measured as the distance from the cemento-enamel junction to the gingival margin. | From enrollment to six month after receiving the treatment |
| Measure | Description | Time Frame |
|---|---|---|
| Correlation Between Clinical and Anatomical Factors and Baseline Recession Depth | The correlation between clinical and anatomical factors and baseline recession depth will be assessed. Clinical and anatomical factors will include baseline keratinized tissue width, tooth angulation, depth of alveolar bone concavity, angulation of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness. Baseline keratinized tissue width and recession depth will be measured clinically in millimeters using a periodontal probe. Tooth angulation and angulation of alveolar bone concavity will be measured in degrees on CBCT images. Depth of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness will be measured in millimeters on CBCT images. The correlation will be evaluated using linear regression analysis. |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Chang Gung Memorial Hospital | Taipei | 10507 | Taiwan |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41052290 | Background | Lin CY, Chiu MY, Kuo PY, Chen Z, Wang HL. A Combined Bilaminar Tunnel Technique Using a Volume-Stable Collagen Matrix for Root Coverage in Anatomically Complex Sites: Technique Description and Report of Two Cases. Int J Periodontics Restorative Dent. 2025 Oct 6;0(0):1-26. doi: 10.11607/prd.7886. Online ahead of print. |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D005889 | Gingival Recession |
| ID | Term |
|---|---|
| D005882 | Gingival Diseases |
| D010510 | Periodontal Diseases |
| D009059 | Mouth Diseases |
| D009057 | Stomatognathic Diseases |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
|
| perioperative |
| Correlation Between Clinical and Anatomical Factors and Mean Root Coverage After Treatment with the Combined Bilaminar Tunnel Technique | The correlation between clinical and anatomical factors and mean root coverage after treatment will be assessed. Clinical and anatomical factors will include baseline keratinized tissue width, tooth angulation, depth of alveolar bone concavity, angulation of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness. Baseline keratinized tissue width will be measured clinically in millimeters using a periodontal probe. Tooth angulation and angulation of alveolar bone concavity will be measured in degrees on CBCT images. Depth of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness will be measured in millimeters on CBCT images. Mean root coverage will be calculated as the percentage reduction in recession depth from baseline to 6 months after treatment. The correlation will be evaluated using linear regression analysis. | From baseline to 6 month after treatment. |
| Association Between Clinical and Anatomical Factors and Complete Root Coverage After Treatment | The association between clinical and anatomical factors and complete root coverage after treatment will be assessed. Clinical and anatomical factors will include baseline keratinized tissue width, tooth angulation, depth of alveolar bone concavity, angulation of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness. Baseline keratinized tissue width will be measured clinically in millimeters using a periodontal probe. Tooth angulation and angulation of alveolar bone concavity will be measured in degrees on CBCT images. Depth of alveolar bone concavity, root prominence, buccal bone dehiscence, and buccal bone thickness will be measured in millimeters on CBCT images. Complete root coverage will be recorded as a binary outcome, defined as the presence or absence of complete coverage of the previously exposed root surface at 6 months after treatment. The association will be evaluated using logistic regression analysis. | From baseline to 6 month after treatment |
| D055093 |
| Periodontal Atrophy |