Considering Intra Oral Dental Assistant Training? Explore These Rare Tooth Morphologies

A dental assistant interacting with dental professionals during dental assistant training

Tooth morphologies refer to the different shapes and characteristics of teeth found in the human dentition. Each type of tooth morphology serves a specific function in the oral cavity, contributing to essential tasks such as biting, tearing, and grinding food during mastication.

While the shape of teeth (i.e. tooth morphology) can differ significantly among individuals and ethnic groups, there are certain deviations from the norm that dentists need to identify. These variations include excessively large or small crowns, conical or peg-shaped crowns, fused adjacent crowns (known as concrescence), and dental restorations that do not conform to the typical shape. Recognising abnormal tooth morphology is crucial, especially when treating patients with clear aligners, as it can present challenges in the alignment process.

Knowing about these rare, abnormal tooth morphologies can make you a more effective and valuable professional if you’re considering a career as a dental assistant or are already in the profession. In this blog post, we will explore some rare tooth morphologies that you might encounter in your dental assistant career.


Supernumerary teeth, also known as hyperdontia, is a dental condition characterized by the presence of extra teeth in the dental arch. These additional teeth can emerge anywhere in the mouth, leading to potential alignment problems and overcrowding. 

These anomalies can be identified by dental assistants during routine dental examinations or radiographic assessments after their intra oral dental assistant training. Early detection is essential, as supernumerary teeth can impede the eruption of permanent teeth, cause malocclusions, and affect overall oral health.

A dental assistant checking an x-ray for abnormalities after dental assistant training
When you become a dental assistant, you will be involved in the diagnosis and treatment process of abnormal tooth morphologies.

Once identified, you can assist in the diagnosis and treatment process by supporting dentists in explaining the condition to patients and discussing potential treatment options. Depending on the individual case, treatment may involve the removal of supernumerary teeth to alleviate crowding and prevent further complications. 

Taurodontism Explained During Dental Assistant Training 

Taurodontism is a dental anomaly characterized by elongated pulp chambers in teeth, resulting in a vertically enlarged appearance. This condition is commonly linked to specific genetic syndromes and may present challenges during root canal procedures due to the altered internal tooth structure.

A female dental assistant checking a patient’s teeth after dental assistant training
Dental assistants who have undergone intra oral dental assistant training are invaluable to dental practitioners.

Dental assistants trained in intraoral techniques are valuable assets in managing taurodontism cases efficiently. Your expertise will allow you to assist dentists in accurately identifying this condition, educating patients about its implications, and providing the necessary support during root canal treatments or other dental interventions. As a dental assistant, you can improve your patients’ oral health and care by understanding and addressing taurodontism.

Shovel-Shaped Incisors

Shovel-shaped incisors are a type of abnormal tooth morphology commonly observed in certain ethnic groups, such as East Asians, Native Americans, and some populations from Africa. This dental trait is characterized by incisors with an unusual shape, where the biting surface of the tooth appears scooped or concave, resembling a shovel’s shape.

The condition is most evident in the maxillary central incisors, which are the two front teeth in the upper jaw. Instead of the typical flat biting surface found in most individuals, the shovel-shaped incisors display a deep depression in the centre, extending from the biting edge towards the gum line.

For dental assistants who’ve earned their dental assistant diploma, recognizing shovel-shaped incisors is crucial during routine examinations and dental treatments. Identifying this trait helps in understanding the patient’s dental anatomy and potential oral health risks associated with the unique shape. Dental professionals can offer tailored oral hygiene recommendations and preventive measures to maintain optimal oral health in individuals with shovel-shaped incisors.

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