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Small Teeth (Microdontia)

Microdontia is the term used to describe the small size of the teeth, the most commonly affected teeth are the upper lateral incisors and third molars. In this, the tooth is smaller than the usual size. But to know about the abnormality we have to first know about the normal size so that we can differentiate between normal and abnormal. Small Teeth in adults are also seen occasionally.

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all about small teeth

Normal Shape and Size of Teeth

The normal shape and size could vary according to the jaw sizes but generally, the teeth size can be judged by observing the teeth. When your mouth is open half inch than 1 to 5 mm of front teeth must be seen. If your teeth are not visible than your teeth might be smaller in size then the normal.

This could be of various types and due to various reasons.

What are various Types of Small Teeth (Microdontia)

The small tooth could be of two types generalised and localised

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Generalised Microdontia

The generalised microdontia is said when almost all the teeth are of small size. It could be subdivided as

True Generalised

When all the teeth are of small size, this condition is very rare and occurs in lack of growth hormone.

Relative Generalised

Actually, all the teeth are normal in size but they appear to be small due to the large jaw size.

Localised Microdontia

The localised microdontia occurs when only a few teeth are smaller than the other teeth. Most common in this is the maxillary lateral incisors which are also called peg shaped laterals (Peg Teeth). These are shaped as an inverted cone and have short root. Localised microdontia is far more common than the generalised microdontia.

Causes of Small Teeth (Microdontia)

There could be various causes/factors responsible for the small teeth in adults.

Little Jaws Big Smiles

There might be an increase in the size of a jaw which eventually leads to the appearance of teeth to be small.

Twisted Lateral Incisors

The lateral incisors are sometimes twisted and due to this, it appears to be small than usual.

Small Teeth Big Gums

Sometimes, due to the swelling of the gum tissues, the teeth get covered under it and appear to be small. This is very common in case of gum disease.

Genetic Inheritance

Congenital hypopituitarism

Down Syndrome

Ectodermal Dysplasia

Problems faced by Patients

Teeth are mostly spaced due to excessively small size, this could be cosmetically disturbing. Difficulty in speech might be seen due to excessive spaces. Some times shape is also altered along with the size these make a big cosmetic concern and treatment is required. Now, you may wonder how to make your teeth bigger?

Treatment ofย  Small Teeth (Microdontia)

Now, you may wonder that, how do I fix my teeth? There are various cosmetic restorative treatment which will help to improve the condition. These are:


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The composite restorations or the reshaping of the tooth with the tooth coloured material is the first option. It is usually beneficial when only one or two teeth are affected.

Veneers for Small Teeth

These are the coverings which are designed to cover your tooth and provide proper shape to it. This option is most popular nowadays.


These are used for various restorations and it actually makes a proper protective covering over the tooth and also provides it proper shape and size.

Orthodontic Treatment

If the tooth is smaller in size due to its partial eruption then the orthodontic therapy is helpful to bring tooth to its proper position with the help of braces on small teeth. Also, the orthodontic therapy can be used to manage space between teeth due to small teeth.

That was all about the microdontia ie, small teeth if you have any questions regarding it or want to share any knowledge then you can ask in the comment section below.

Deepak Kansal

Deepak Kansal

I am a Dental Professional, Acquainted Content writer and creator, Imparting valuable dental knowledge through and working towards making a difference. Any information provided on the Trickycare platform is for general information only and does not constitute professional advice.

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