Toothpaste is a paste or gel dentifrice used with a toothbrush to clean and maintain the aesthetics and health of teeth as well as gums. It is an abrasive that aids in removing dental plaque and food from the teeth, assists in suppressing halitosis, and delivers active ingredient (most commonly fluoride) to help prevent tooth decay and gum disease. There are different types of toothpaste available in market. Their various functions depend on the active ingredients they contain.

 Anti-decay toothpaste -They contain Fluoride compounds such as sodium fluoride content is 1000 ppm or above. Fluoride helps to protect teeth against decay, cavities and harmful foods and beverages.

 Children toothpaste -Children toothpaste contains 500 ppm fluoride or less and usually flavored, e.g. fruit flavored, candy flavored which more is appealing to children.

Desensitizing toothpaste -   Occasionally, teeth can become sensitive leading to pain while eating and drinking. Toothpaste which target sensitivity contains special compounds called potassium nitrate that block the nerve in your teeth from sensing hot or cold.

Teeth whitening toothpaste- Our teeth are susceptible to dental stains that are come about as a result of consuming certain kinds of foods such as coffee, tea or cola. Teeth whitening toothpaste contains cleansers and abrasive that help remove or lessen the appearance of those stains.

Tarter control -Tarter is plaque that has hardened or calcified. When we consistently miss certain spots or spaces on our teeth while brushing, build up begins to harden and eventually must be scraped off by your dentist. Tarter control toothpaste contains special compounds which work to dissolve plaque and buildup and restore healthy gums. 

Herbal toothpaste -This type of toothpaste is a popular option for the people who are either sensitive to the ingredients in regular toothpaste or simply want more natural cleaning alternative. You should be aware that some of these toothpaste contain no fluoride. 

Dentist always recommend toothpaste that contains fluoride because this protect enamel and strengthens teeth. You may have seen articles on social media about color coding present at the bottom of toothpaste tubes:

Green square = Natural 

Blue square = Natural+ Medicine 

Red square= Natural +Chemical composition

Black square= Pure chemical

Well after checking this out those marks are for manufacturing purposes, so machines know where to cut the tubes. It has nothing to do with composition of the toothpaste.