Clinical Research Directory

Effectiveness and Safety of Collagen Membrane (FormaAid®) in the Treatment of Periodontal Regeneration

The goal of this clinical trial is to evaluate clinically and radiographically effectiveness and products safety of the collagen membrane (FormaAid®) in the treatment of periodontal regeneration using guided tissue regeneration (GTR) performed by the trained periodontists. The main question it aims to answer are: * The difference of periodontal status: clinical attachment level (CAL), periodontal pocket depth (PPD), gingival recession (GR), gingival Index (GI) and plaque index (PI). * The difference of intrabony defect height. * The difference of gingival tissue thickness and gingival tissue volume. * The incidences of safety indicators. Participants will be randomized into either experiment group or control group, undergo guided tissue regeneration (GTR) surgery at week 1, and re-visited on week 3, 5, 13 and 27 after the GTR surgery. Researchers will compare if the test product is non-inferior to Bio-Gide.

The Efficacy of Guided Tissue Regeneration With Extracellular Matrix Scaffold of Small Intestinal Submucosa (SIS) Membrane: a Randomized Controlled Clinical Trial

The most commonly used barrier membrane material in guided tissue regeneration is absorbable collagen membrane. Although the collagen membrane has a good barrier effect, it lacks the growth factors needed for periodontal tissue regeneration, which affects the effect of collagen membrane on periodontal tissue regeneration. Extracellular Matrix Scaffold of Small Intestinal Submucosa (SIS) Membrane is a novel absorbable membrane that retains the extracellular matrix structure and is conducive to vascular ingrowth and tissue repair. The in vitro study showed that SIS membrane had excellent biocompatibility and certain antibacterial effect. Preclinical study also showed that SIS membrane significantly promoted the differentiation of bone marrow mesenchymal stem cells into osteoblasts, and promoted bone regeneration more effectively than collagen mechanism materials. SIS membrane can be used in soft tissue wound repair, guided bone regeneration, site preservation and other surgeries, and has achieved good therapeutic effects. However, whether the application of SIS membrane can achieve good therapeutic effect on periodontal guide tissue regeneration is still unclear. Therefore, in this study, the effects of guide tissue regeneration with collagen membrane and SIS membrane were compared through a randomized controlled clinical study.