Background: Interdental black triangles are a common esthetic concern in dentistry. This study aimed to compare the efficacy of the Bioclear matrix technique with the traditional celluloid matrix technique for black triangle repair. Methods: A prospective, randomized controlled clinical trial was conducted with 24 patients presenting Class I or II black triangles. Patients were randomly assigned to either the Bioclear matrix group (n=12) or the traditional celluloid matrix group (n=12). Clinical parameters, including the Modified Papilla Index Score (MPIS), gingival index (GI), and plaque index (PI), were assessed at baseline and follow-up appointments over 6 months. Esthetic outcomes were evaluated using modified USPHS criteria. Patient satisfaction was measured using a visual analog scale (VAS). Procedure time was recorded for each treatment. Results: Both techniques showed significant improvement in papilla height over the 6-month follow-up period. The Bioclear matrix group demonstrated superior results in papilla height gain (mean MPIS at 6 months: 2.83 ± 0.39 vs. 2.42 ± 0.51, p = 0.03). Esthetic outcomes were better in the Bioclear group, with higher rates of ideal color match (83% vs. 58%) and surface texture (92% vs. 67%). Patient satisfaction scores were consistently higher in the Bioclear group (mean VAS at 6 months: 9.2 ± 0.8 vs. 7.8 ± 1.2, p = 0.002). The mean procedure time was significantly shorter for the Bioclear technique (32.5 ± 5.7 minutes vs. 41.3 ± 7.2 minutes, p < 0.001). No significant differences were observed in gingival health or plaque accumulation between the groups. Conclusion: While both techniques effectively addressed interdental black triangles, the Bioclear matrix technique demonstrated superior outcomes in terms of papilla height gain, esthetic results, patient satisfaction, and procedural efficiency. These findings suggest that the Bioclear method may be a preferred option for managing interdental black triangles, though individual case factors should be considered. Further long-term studies with larger sample sizes are warranted to confirm these results and assess the durability of the restorations.