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Tooth Anatomy

Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.

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The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...

Oral Cavity

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The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions.
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Concomitant hypo-hyperdontia with dens invaginatus.

B S Manjunatha¹, D Nagarajappa, Santosh Kumar Singh

¹Department of Oral Pathology and Microbiology, K M Shah Dental College and Hospital, Pipariya, Vadodara, Gujarat, India. drmanju26@hotmail.com

Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research

|November 4, 2011

Summary

This study reports a rare case of mixed numeric tooth anomalies, specifically hypohyperdontia, in a 26-year-old male. This condition, involving both fewer and extra teeth, is exceptionally uncommon in permanent dentition.

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Area of Science:

Dentistry
Oral and Maxillofacial Surgery
Dental Anomalies

Background:

Developmental anomalies of tooth number are relatively common in permanent dentition.
Mixed numeric anomalies, such as hypohyperdontia (concomitant hypodontia and hyperdontia), are exceedingly rare.
Existing literature reports very few cases of this specific condition.

Observation:

A rare case of concomitant hypohyperdontia was identified in a 26-year-old male dental graduate.
The patient presented with no other associated systemic conditions or syndromes.
This mixed numeric anomaly involved both a reduction and an increase in tooth number.

Findings:

The case highlights the infrequent occurrence of combined hypodontia and hyperdontia.
The condition was observed in an adult dental graduate, indicating potential for late diagnosis or presentation.
No underlying genetic syndromes or systemic diseases were associated with the anomaly.

Implications:

This case contributes to the limited understanding of hypohyperdontia prevalence and presentation.
It underscores the importance of thorough dental examinations for identifying rare anomalies.
Further research into the etiology and management of mixed numeric tooth anomalies is warranted.