iCliniq logo

Ask a Doctor Online Now

HomeHealth articleshypercementosisHypercementosis - Excessive Deposition of Cementum on Tooth Roots

Hypercementosis - Excessive Deposition of Cementum on Tooth Roots

Verified dataVerified data

4 min read


Hypercementosis is a condition characterized by overproduction or rapid increase in cementum on the tooth root. Read the article to know more.

Written by

Dr. Geethika. B

Medically reviewed by

Dr. Sneha Kannan

Published At June 2, 2022
Reviewed AtJanuary 30, 2023

What Is Cementum?

Cementum is the calcified covering of a tooth root. Its deposition is an ongoing process that occurs at different rates throughout life. Cementum formation occurs most quickly in the apical regions, where it compensates by tooth eruption, which compensates for attrition (loss of tooth structure due to tooth-on-tooth contact). The cementum thickness on the coronal half of the root ranges from 16 to 60 microns, which is roughly the thickness of a hair. The apical third and furcation areas have the greatest thickness (150 to 200 microns). It is thicker on distal surfaces than on mesial surfaces, which is most likely due to functional stimulation from mesial drift over time. Between the ages of 11 and 70, the average thickness of the cementum triples, with the greatest increase occurring in the apical region. Cementum thickness abnormalities can range from the absence or scarcity of cellular cementum (cemental aplasia or hypoplasia) to excessive cementum deposition (cemental hyperplasia or hypercementosis).

What Is Hypercementosis?

Hypercementosis is a non-neoplastic condition characterized by overproduction or increased proliferation of cementum on the tooth root. It can affect a single tooth or several teeth. The condition is asymptomatic and is discovered through a radiographic examination. This can cause mild to severe misshaping of the tooth root, giving it a bulbous or lobular appearance. With thelamina dura and periodontal ligament(a ligament that anchors the tooth to the jaw bone) space visible around the excess cementum, it will appear slightly less radiopaque than thedentin (tooth layer below the enamel).The additional cementum usually has a smooth outline, but it can also be irregular. Although the exact cause is unknown, hypercementosis could be a reaction to inflammation or a loss of function of a supra erupted tooth due to the absence of an opposing tooth.

What Can Hypercementosis Do to Your Teeth?

Hypercementosis has been linked to fractured teeth or teeth in heavy occlusion. Although the majority of cases are idiopathic, several local and systemic factors have been linked to this condition. Asymptomatic hypercementosis is usually discovered during routine examination and does not require treatment. However, dental radiographs such as orthopantomography and periapical films can detect it. Cementum spike formation is a rare condition characterized by the appearance of small spikes or outgrowths of cementum on the root surface. Cemental spikes have been linked to excessive occlusal stress or tension from orthodontic appliances, most likely as a result of irregular cementum deposition in a focal group of periodontal ligament fibers, coalescence of cementiclesthat adhere to the root, or calcification of periodontal fiber at the site of insertion into the cementum. The biological width between the root surface, the periodontal ligament, and the alveolar bone is not altered by hypercementosis.

What Are the Causes of Hypercementosis?

Inflammation secondary to pulpal or periodontal disease, occlusal trauma, tooth mobility, tooth transplantation, and root fracture repair has all been linked to hypercementosis. Some of the systemic conditions associated with it are-

Except for Paget's disease, which is strongly linked to this condition, the majority of the other conditions have a weak association. In patients with a specific history and clinical findings, other systemic factors associated with hypercementosis can be ruled out. In endodontic practice, tooth root hypercementosis is a common finding.

What Are the Types of Hypercementosis?

Hypercementosis can be found at the root apex, any part of the root surface, or the entire root surface, and it is classified morphologically into the following types:

  • Club-shaped.

  • Circular cemental hyperplasia.

  • Diffuse hypercementosis, in which the root takes on the shape of a club.

  • Focal or localized hypercementosis is confined to a single root surface.

What Are the Clinical and Radiographical Features of Hypercementosis?

Radiographically, affected teeth show thickening or blunting of the root, but determining the exact amount of increased cementum can be difficult because cementum and dentin have similar radiodensities. In addition, the radiolucent PDL (periodontal) space and the adjacent intact lamina dura surround the enlarged root. On rare occasions, the enlargement may be significant enough to indicate the presence of a cementoblastoma. However, cementoblastoma is usually distinguished by associated pain, cortical expansion, and continued enlargement. Hypercementosis can be isolated, involve multiple teeth, or manifest as a systemic condition.

What Are the Histopathological Features of Hypercementosis?

The root's periphery has an excessive amount of cementum deposited over the original layer of primary cementum. Excess cementum may be hypocellular or have cellular cementum areas that resemble bone (osteo cementum). The material is frequently arranged in concentric layers and may be applied over the entire root or only to the apical portion. Distinguishing between dentin and cementum is often difficult with routine light microscopy, but viewing the section with polarized light helps to distinguish between the two different layers.

How Can Hypercementosis Be Diagnosed?

  • Radiographic Appearance: Excessive buildup of tooth density material (cementum) around the entire or parts of the tooth root.

  • When there is hypercementosis, the difference in density between dentin and cementum (which is usually not visible) becomes visible.

  • It could be irregular or smooth.

  • A bulbous enlargement of the root is observed.

  • Location: It can be limited to the apical third of the tooth root or can extend the entire length of the tooth root.

  • The mandible is affected twice as frequently.

  • Molars are the most affected, followed by premolars.

  • Preferred Imaging Modality: Periapical radiography allows for a more accurate assessment of the periodontal ligament (PDL) space and the lamina dura relationship.

What Is the Differential Diagnosis of Hypercementosis?

Any radiopaque structure seen near the root, such as a dense bone island or mature cemento-osseous dysplasia(jaw disorder in which normal bone is replaced by connective tissue matrix), may be considered in the differential diagnosis. The presence of a periodontal membrane space around the hypercementosis is the distinguishing feature. There may be a resemblance to a small cementoblastoma. Hypercementosis may appear on a severely dilacerated root on rare occasions.


Hypercementosis patients usually do not require treatment. However, cemental deposits cause bulbous enlargements on the roots, which can impede extractions, especially if adjacent teeth become fused (concrescence). It may also cause pulpal necrosis (pulp tissue death)by obstructing blood supply through theapical foramen. In the occasional complications, where the extraction of an affected tooth due to a thickened root is obstructed, tooth sectioning may be required to help in removal.

Frequently Asked Questions


What Does Hypercementosis Seen Like?

Hypercementosis is a condition in which the excessive growth of cementum covers the root of the tooth, leading to an enlarged or bulbous tooth. The appearance can vary depending on the severity and location of the affected tooth. The tooth may be slightly enlarged with a rounded or smooth shape. The tooth may be slightly longer and irregularly shaped. The tooth may feel firm to the touch. Hypercementosis is most commonly seen on the premolars and molars.


How Common Is Hypercementosis?

Hypercementosis can occur at any age, but the condition is more commonly seen in adults over the age of 40. The condition is also seen in people with dental conditions like gum disease, tooth grinding, or dental trauma. The condition can also occur in younger people only if there is a history of trauma or genetic predisposition to the affected tooth. It is not a common condition, and many people go their entire lives without experiencing the condition.


What Is the Other Name For Hypercementosis?

Hypercementosis is a condition in which there is excessive growth of cementum around the root of the tooth, leading to enlargement of the tooth, giving a bulbous appearance. The other name for hypercementosis includes cementum hyperplasia and cementum overgrowth.


What Is the Inference of Hypercementosis?

Hypercementosis is a benign condition that does not cause symptoms. It has many implications for dental functions and health. The implications are as follows:
- Hypercementosis can cause the affected tooth to be enlarged and bulbous. It may be a cosmetic problem if the tooth is visible during speaking and smiling.
- The condition can lead to increased mobility due to changes in the periodontal ligament.
- The condition can interfere with the alignment of the affected tooth. It may interfere while chewing or biting.
- In some cases, it may cause discomfort and may need a tooth extraction or root canal treatment.


Which Tooth Falls Out by Age?

There is no specific tooth that falls out with age. The order and time of tooth loss vary from person to person. There is a natural pattern of tooth eruption and shedding that occurs during childhood and adolescence. The baby teeth start to come in around six months of age till two years old, and the teeth fall out at age six. The lower front teeth are the first tooth to fall out, followed by the upper front teeth and then the molars. The process of tooth loss continues throughout adolescence.


What Is the Description of Hypercementosis in Premolar?

Hypercementosis can occur in any tooth but is most commonly seen in the premolar. In premolars, the extra cementum can cause the tooth to appear more enlarged than normal and may lead the tooth to fuse with the surrounding bone. The exact cause of the condition is unknown. Certain systemic conditions, such as Paget’s disease, can also lead to hypercementosis. 


What Is the Epidemiology of Hypercementosis?

The prevalence is not well known. It is a rare condition with a prevalence between 0.15 to 3.6 percent. The incidence is higher in certain populations with systemic conditions like Paget’s disease. The condition is also due to any trauma or chronic inflammation in the affected tooth. It is more commonly seen in the older age group because of the cumulative mechanical stress on the tooth root.


Which Teeth Are More Susceptible to Hypercementosis?

Hypercementosis can occur in any tooth but is more commonly seen in the premolars and molars. The premolars and molars have a more complex root system than the front teeth, so they are more susceptible to hypercementosis. The condition can affect multiple teeth in the same person. It can also occur unilaterally and bilaterally.


What Does Hypercementosis Look Like in Periodontics?

In periodontics, hypercementosis is a condition in which the excess cementum is deposited on the root surface due to the chronic inflammation of the periodontal tissue. The condition is seen in patients with advanced periodontal disease in which the tooth is chronically inflamed. Due to periodontal disease, the additional cementum can stabilize the tooth by compensating for tooth structure loss. The condition can also lead to periodontal pockets. 


What Does Hypercementosis Look Like in Periodontics?

In periodontics, hypercementosis is a condition in which the excess cementum is deposited on the root surface due to the chronic inflammation of the periodontal tissue. The condition is seen in patients with advanced periodontal disease in which the tooth is chronically inflamed. Due to periodontal disease, the additional cementum can stabilize the tooth by compensating for tooth structure loss. The condition can also lead to periodontal pockets. 


How Does Hypercementosis Affect Dental Treatment?

Depending on the severity and location of the condition, hypercementosis can influence dental treatment. The condition makes it more difficult to perform certain dental procedures, such as tooth extraction. The condition can also complicate orthodontic treatment because the excessive cementum interferes with tooth movement. It can also affect endodontic treatment, such as root canal treatment. It may increase the risk of treatment failure.


Does Grinding Teeth Cause Hypercementosis?

Grinding teeth can lead to various dental problems. Bruxism is the grinding of the teeth leading to exposure of underlying cementum, which can lead to inflammation. Not everyone who grinds their teeth leads to hypercementosis. Other factors like age, oral hygiene, and genetics also play a role in the development of the condition. If a person experiences headaches or jaw pain, he may consult a doctor to prevent further damage to the teeth.


Is Paget’s Disease Linked With Hypercementosis?

Paget’s disease is a bone disorder in which normal bone remodeling is disrupted, resulting in abnormally large, brittle, and deformed bone. There is no direct link between Paget’s disease and hypercementosis. Both conditions can affect the face and jaw, leading to dental problems. Paget’s disease can cause dental abnormalities such as misalignment of the teeth and risk of developing hypercementosis. 
Dr. Geethika. B
Dr. Geethika. B



Community Banner Mobile
By subscribing, I agree to iCliniq's Terms & Privacy Policy.

Source Article ArrowMost popular articles

Ask your health query to a doctor online


*guaranteed answer within 4 hours

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.

This website uses cookies to ensure you get the best experience on our website. iCliniq privacy policy