ABSTRACT Recently porcine derived bioresorbable collagen matrices have shown predictable outcomes for augmenting keratinized gingiva, improved wound healing, recession coverage in localized gingival recessions and multiple recession coverage. The aim of this study was to evaluate the effectiveness of the collagen matrix in the management of Millers class II gingival recessions. The use of collagen matrix in combination with Coronally Advanced Flap as a surgical technique was tested versus Coronally Advanced Flap alone. Material and Methods: The study design is a randomized controlled clinical trial (split mouth design). Ten participants selected from Beirut Arab University Department of Oral Surgical Sciences Division of Periodontology seeking root coverage due to bilateral premolar class II (Miller Classification) gingival recession. The 10 participants with 20 sites according to Miller class II classification were randomly assigned into two groups. Group I (test) includes 10 sites with Class II Miller gingival recession that will be treated with Mucograft and Coronally Advanced Flap. Group II (control) includes 10 sites with Class II Miller gingival recession will be treated with Coronally Advanced Flap alone. Recordings of the clinical variables included: Recession Depth & Width (RD, RW), Width of Keratinized Tissues (WKT), Gingival Biotype, and Percentage of Root Coverage were taken at baseline, 3 months, and 6 months’ post surgically. Data collected were fed to the computer and analyzed using IBM SPSS software package version 23.0. Statistical significance was set at 0.05 Results: The study showed that the clinical variables tested improved throughout the study period in both the test and control sites, however the gingival biotype and width of keratinized tissue were in favor of the test sites. Conclusion: The use of the Mucograft with a partial thickness coronally advanced flap as a treatment modality for root coverage provides a significant approach for decreasing recession depth and width, increase in the width of the keratinized tissue as well as gingival thickeness in Millers class II gingival,recession