How Do Teeth Grow

How Do An Adult Teeth Grow(An Easy Guide)

We all have them and use them every day. From where do teeth come? How do teeth grow through gums? And what makes up teeth? Learning more about how our teeth develop and what they consist of can help us better care for them in our day-to-day lives.

This article will help you preserve your teeth’s health and answer all your tooth growth questions, from “How do teeth grow in your mouth?” to “How do teeth grow back?” Keep reading if you’ve ever wanted to know more about what goes on in your mouth.

What Are Teeth Made Of?

Although our teeth and bones contain more than 99% of our body’s calcium, teeth are not bone. Despite their similarities, bone is living tissue, whereas teeth are not. Without any living tissue, the outermost layer of your teeth is even more complex than bone. Indeed, this layer — known as enamel — is the hardest substance in your whole body. So if the teeth aren’t bone, what are they? There are four different tissue types within a tooth — enamel, dentin, cementum, and pulp. Unlike bone, these tissues are not living.

Check out the functions of these four tissues.

ENAMEL: is the most complex outermost layer covering the tooth, protecting it from chewing pressure, drastic temperature changes, and harmful bacteria.

DENTIN: beneath the enamel is yellow dentin which is more complex than a bone and makes up most of the tooth structure. The teeth’s natural yellow hue comes from dentin.

how do teeth grow,shong teeth structure

CEMENTUM: cementum is the second hardest substance than bone. It is present under the gum line covering most of the tooth root and supports the jaw bone in holding the tooth in its place.

PULP:  is the core of the tooth which contains connective tissue, blood vessels, and nerves. The pulp is composed of two parts-in the crown is called the pulp chamber, and within the root, it is called the root canal. The pulp nourishes the tooth in the crown and root portions.

How Do Teeth Develop?

As with most mammals, we go through two sets of teeth in our lifetimes. The first set is temporary, known as milk teeth, followed by the second set of permanent adult teeth. 

Our teeth go through several significant changes throughout our lives, but how do they start, and what happens after that?

In Utero

Teeth first start to develop while a baby is still in the womb, so the mother’s diet should include plenty of calcium and vitamin D. How long do teeth take to grow in The mother’s womb.Around six weeks into a pregnancy, the primary substance of the teeth begins to form. The teeth’ complicated tissue forms at about three or four months of pregnancy.

5–8 months

When we’re born, all we have are our gums, and it usually isn’t until five to eight months of age that the first milk teeth begin to push through. These are smaller than adult teeth due to the size of a baby’s jaw. The first to emerge is generally the incisors – these are the front, flat-edged teeth used for biting, and there are eight in all: four on the top and four on the bottom.

6-12 Months

After a baby’s birth, teeth slowly protrude through the gum line. Although every child is different, a baby’s teeth usually start to come in around six months. The first tooth to grow through gums is typically a lower, middle front tooth.

16–23 months

Next come the canines, which are your more pointed teeth. There are four in total, and they bookend the incisors. The final eight teeth follow and should all be developed by two years old, give or take a few months. These teeth are premolars with larger uneven surfaces, which we need for chewing and completing our first set of 20 teeth, ten on top and ten on the bottom.

1-3 Years

During these early years, teeth erupt, with the back molars being the last teeth to come in. In general, a child’s complete set of 20 primary teeth has fully come in by the time they are 3. Though these baby teeth will eventually fall out, it’s still crucial to practice good dental hygiene to prevent severe decay and spacing problems for adult teeth.

6-12 Years

Around six years, a child will begin to lose their primary set of teeth so the second set of teeth can grow back in its place. After the child loses their first few baby teeth, the first permanent molars will begin to erupt. Children typically lose their last teeth at around 12 years, leaving them with 28 permanent adult teeth.

Adolescent to Young Adult

Four final teeth will begin to come in during the teenage to young adult years. These four teeth are the third set of molars, commonly referred to as wisdom teeth. After these molars come in, at age 21, there will be 32 adult teeth. 

During our teenage years, it’s common for teeth to grow awkwardly and at angles, so they may need straightening. Your orthodontist will be able to advise on the most suitable treatments for teeth alignment. 

teeth crowding to show how teeth grow

It is usually late-teens to early 20s when these teeth come through; however, the timing is different for everyone: some wisdom teeth don’t appear until the late 20s, while others don’t get them.

Many experience difficulties with this last set of adult teeth, and the main problem with wisdom teeth is that there is not enough space to accommodate them. They can cause problems such as overcrowding your existing teeth and growing through at difficult angles. Wisdom teeth can become impacted and cause discomfort, at which point it is best to remove them. 


Throughout the adult years, follow proper oral hygiene to keep your permanent teeth healthy. If you lose or damage a tooth, an artificial tooth replacement is the only option because adult teeth do not grow back. Following a daily oral hygiene routine and a healthy diet will protect adult teeth from decay.

how do teeth grow showing oral hygien

Your 32 permanent teeth are the ones you have for life, but that doesn’t mean they last forever. Adults should maintain a daily oral hygiene routine, or they may suffer irreversible damage. If we lose these teeth, the only other option is an artificial replacement. 

You will get a lot more out of your natural teeth if you look after them well – those with healthy diets and oral hygiene routines have held onto their original adult teeth for their whole lives.

Older Adult

Even the most avid tooth brusher’s teeth become more vulnerable to damage. As the years go by, gums start receding or developing gum disease, especially among those who smoke or drink. However, keeping up with a daily brushing and flossing regimen can help avoid dental corrections like crowns, dental implants, or dentures.

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