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Teeth

Teeth

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...

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.

The Oral Microbiota

The Oral Microbiota

The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...

Oral Cavity

Oral Cavity

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.
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...

Regulation of Food Intake

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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

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Related Experiment Video

Updated: Jul 14, 2026

Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants

Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants

Published on: March 29, 2018

Ghrelin is present in teeth.

Suleyman Aydin¹, Ibrahim Hanefi Ozercan, Hikmet Geckil

¹Department of Biochemistry and Clinical Biochemistry, Firat University, Medical School (Firat Medical Center), 23119 Elazig, Turkey. saydin1@hotmail.com

Journal of Biochemistry and Molecular Biology

|June 15, 2007

Summary

Ghrelin, a gut-brain hormone, was found in human teeth, specifically in odontoblasts and pulp. This discovery suggests ghrelin may play a role in dental tissue physiology.

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Area of Science:

Endocrinology
Dental Biology
Bone Biology

Background:

Ghrelin is a gut-brain hormone regulating food intake and energy balance.
Recent research indicates ghrelin's direct role in bone formation.
Dental tissues share similarities with bone, suggesting potential ghrelin involvement.

Purpose of the Study:

To investigate the presence and localization of ghrelin in human teeth.
To explore potential physiological roles of ghrelin in dental tissues.

Main Methods:

Immunocytochemistry was used to detect ghrelin in human teeth.
Radioimmunoassay was employed to quantify ghrelin levels.
The study analyzed 44 human teeth, including canines and molars.

Main Results:

Ghrelin was detected in human canines and molars.
The hormone was primarily localized in odontoblasts.
Ghrelin was also found within the dental pulp.

Conclusions:

Ghrelin is present in human dental tissues.
Odontoblasts and pulp are key locations for ghrelin in teeth.
Ghrelin may have significant physiological functions in the teeth.