Core Viewpoint - The article discusses the issue of gum recession, its causes, symptoms, and the importance of oral hygiene, while promoting a specific toothpaste product developed by a team from Peking University that claims to help with gum health and sensitivity issues [2][3][11]. Summary by Sections Gum Recession and Its Impact - Gum recession, or gum shrinkage, exposes the tooth roots and can lead to tooth loosening or loss [2][3]. - Approximately 50% of people in China experience gum recession, which can affect aesthetics, leading to visible gaps between teeth, known as "black triangles" [7]. - The primary cause of gum recession is often plaque buildup, which leads to chronic irritation of the gums [9]. Symptoms and Consequences - Symptoms of gum recession include swollen gums, bleeding while brushing, exposed tooth roots, increased tooth sensitivity, and tooth mobility [5][11]. - If left untreated, gum recession can result in significant dental issues, including tooth loss [11]. Prevention and Treatment - Maintaining good oral hygiene, including proper brushing techniques, is crucial to prevent further gum recession [11]. - The article emphasizes that while gum recession can be managed to prevent worsening, reversing it is challenging [11]. Product Promotion - The article promotes "Nobida Rebuild" toothpaste, developed by a Peking University research team, claiming it can help maintain gum health and reduce oral issues [13][28]. - Clinical trials indicate that after two weeks of use, sensitivity decreased by 39.44%, and after four weeks, it decreased by 56.34% [31]. - The toothpaste contains HAP-Rebuild technology, which is said to help repair damaged enamel and reduce plaque buildup [59][70]. Unique Selling Proposition - The toothpaste is marketed as using ingredients similar to those found in teeth, specifically hydroxyapatite (HAP), which is effective in dental care [61][74]. - It is claimed that the product not only cleans but also protects and repairs enamel, unlike traditional whitening toothpastes that may damage enamel [78][86]. Pricing and Offers - The pricing for the toothpaste is presented, with various package options available, including discounts for bulk purchases [19][93]. - A promotional offer includes a free trial product with the purchase of five tubes, along with a money-back guarantee [21][95].