Toothpaste, a familiar term and an indispensable oral hygiene product in our lives. But do you know what its main ingredients are? How to choose the right toothpaste for yourself?
Analysis of Toothpaste's Main Ingredients
The primary components of toothpaste include abrasives, cleaning agents, humectants, binders, preservatives, flavorings, and water. Additionally, medicated toothpastes incorporate specific medicinal ingredients tailored to their intended purpose.
(1) Abrasives
Abrasives constitute the largest proportion of toothpaste (approximately 25%-60%). They enhance the toothpaste's scrubbing action and stain-removal capabilities while polishing tooth surfaces.Abrasives must provide adequate friction without damaging tooth surfaces or periodontal tissues, nor react with medicinal components in the toothpaste. Particularly for fluoride toothpastes, abrasives require compatibility with fluoride ions to preserve their activity. Furthermore, abrasive fineness and particle shape significantly influence paste quality.
(2) Cleansing Agents
Cleansing agents, also known as surfactants, reduce surface tension. They penetrate and loosen dental plaque, transforming it into an emulsion or suspension that can be easily brushed away by the toothbrush and abrasive agents, then rinsed out with water.Surfactants generate foam during brushing, aiding in tooth surface cleaning. They also possess mild antibacterial properties and exhibit good compatibility with abrasives. Excessive use of detergents significantly diminishes the toothpaste's fragrance.
(3) Humectants
Humectants primarily prevent paste from drying and hardening (especially forming hardened lumps near the tube opening that are difficult to squeeze out), maintain the paste's glossy appearance, and lower the paste's freezing point, ensuring normal use even in cold climates. Humectants significantly affect the colloidal components in the paste. Therefore, only with appropriate dosage can an ideal product with good stability and excellent spreadability during brushing be achieved.
Tailor Your Choice to Your Needs
Anti-inflammatory: Formulated with antibacterial agents added to standard toothpaste, these offer anti-inflammatory and antimicrobial effects. However, prolonged use may disrupt the oral microbiome, so switching to a different functional toothpaste after finishing a tube is advisable.
Sensitivity Relief: Contains desensitizing agents like fluoride or strontium chloride. These offer limited relief for mild dentin hypersensitivity. Discontinue use if no improvement is observed after a period of time.
Desensitizing & Acid-Resistant: These toothpastes form a protective layer on tooth surfaces, reducing the permeability of hard dental tissues and enhancing their buffering capacity, thereby strengthening the disease resistance of periodontal tissues. Note: Discontinue use once symptoms improve, as prolonged use may disrupt the oral microbial ecosystem and lead to other conditions.
Whitening toothpaste: Containing agents like peroxides or hydroxyapatite, these products remove surface stains through abrasion and chemical bleaching to achieve whitening effects. However, prolonged use of toothpaste with large, hard abrasive particles may cause tooth wear.
It is advisable to alternate between different types of toothpaste to prevent tolerance building up from prolonged use of a single product, which can significantly reduce its effectiveness.
Precautions for Toothpaste Use
① Do not blindly trust claims of special efficacy.
Toothpaste remains in the mouth for only a short time before being rinsed away, making it difficult for some "special-effect" toothpastes to deliver their promised benefits within this brief period. If your teeth are healthy, regular toothpaste is sufficient.② Rotate toothpaste brands
Long-term use of the same toothpaste allows harmful oral bacteria to develop resistance, rendering the toothpaste ineffective at sterilizing and protecting teeth. Alternating between several types prevents bacteria from building tolerance to specific medicinal ingredients while avoiding excessive intake of certain substances through prolonged, repeated use.Therefore, rotating between several types of toothpaste is a wise choice.
③ Avoid using one tube of toothpaste for too long
The longer toothpaste is used, the more it is exposed to air and the toothbrush, significantly increasing its contact with bacteria.④ Avoid sharing toothpaste within a household. Each person's mouth harbors diverse bacteria. Even thorough brushing only reduces surface bacteria—it cannot eliminate them entirely, especially since bacteria adhere to the gaps between bristles.When multiple family members share a single tube of toothpaste, bacteria from everyone's mouths accumulate at the tube opening and are subsequently transferred to others' toothbrushes. Therefore, the more people using the same tube, the greater the bacterial buildup at the opening and the higher the risk of bacterial transmission.