In toothpaste, physical cleaning is the fundamental role of magnesium oxide. Traditional calcium carbonate has a strong abrasive force and can easily wear down fragile tooth enamel with long-term use. In contrast, magnesium oxide particles in toothpaste are fine and rounded with a lower friction coefficient. During brushing, they can gently adsorb tea stains, coffee stains, and food debris on the tooth surface, stripping away dental plaque without scratching the tooth enamel and dentin. At the same time, it possesses excellent absorbency, allowing it to absorb oral odor molecules for long-lasting fresh breath. It also regulates the consistency of the toothpaste paste, making the texture fine and easy to foam, thereby enhancing the user experience.
Mild alkaline neutralization and cavity prevention are the core dental care advantages of magnesium oxide. Bacteria in the oral cavity decompose sugars to continuously produce acidic substances, and a long-term acidic environment dissolves tooth enamel, leading to white spots and dental caries. Magnesium oxide slowly releases weakly alkaline ions when encountering water, gently neutralizing oral acidity, stabilizing the pH value of the mouth, and fundamentally reducing the risk of acid erosion. Nano-grade magnesium oxide can even penetrate the micro-pores of the tooth enamel, guiding the deposition of calcium and phosphorus ions to assist in repairing early demineralized tooth enamel, improving tooth sensitivity and white spot issues, and achieving simultaneous cleaning and repair.
In addition to this, magnesium oxide naturally comes with a natural antibacterial capability. Upon contacting cariogenic bacteria and gingival pathogens, ultra-fine magnesium oxide particles can disrupt the structure of bacterial cell membranes, inhibiting the reproduction of Streptococcus mutans and periodontal pathogens, reducing dental plaque accumulation, and alleviating gingival redness and bleeding, making it well-suited for periodontal care toothpaste formulations. Magnesium is also an essential trace element for the human body; a small intake can help maintain oral mucosal health, mildly catering to the oral care needs of people of all age groups.