SP5 toothpaste is not mentioned in the search results. However, there is information on toothpaste ingredients, both positive and negative, and their effects. Here are some of the key ingredients and their functions:

Positive Ingredients:

• Fluoride: This is a common ingredient in most toothpaste brands and is known to help prevent tooth decay by strengthening tooth enamel.

• Abrasives: Abrasives help remove food debris and surface stains from teeth. Common abrasives include baking soda, dicalcium phosphate, kaolin, bentonite, silica, and calcium carbonate.

• Humectants: Humectants are ingredients that keep toothpaste moist and prevent it from drying out. Common humectants include sorbitol, pentatol, and glycerol.

• Sodium pyrophosphate: This is an active ingredient found in tartar-control toothpaste and has been shown to prevent the formation of plaque when used regularly.

Negative Ingredients:

• Sodium Lauryl Sulfate (SLS): This is a common detergent added to many toothpastes to make them foam. However, it can cause irritation to the gums and worsen symptoms of mouth ulcers.

• Propylene Glycol: This is used to improve a products shelf life, appearance, and texture. In large quantities, it has been linked to damage of the central nervous system, liver, and heart.

• Diethanolamine (DEA): This is a product that can be found in antifreeze and brake fluid. In a 1998 study, the topical application of DEA has been linked to cancer in animals.

• Parabens: These are used to preserve the shelf life of a range of cosmetics, including toothpaste. They have been linked to hormone disruption and breast cancer.

It is important to note that toothpaste ingredients can vary depending on the brand and type of toothpaste. It is always a good idea to read the label and do research on the ingredients before using a new toothpaste.