Related Experiment Video
Updated: Sep 27, 2026

Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants
Published on: March 29, 2018
[Dental caries in 5-year-old children in Yunnan in 1995]
Objective:
To investigate the deciduous tooth caries experience of 5-year-old children in Yunnan province.
Methods:
Random samples of 5 year-old children from three cities and three counties of Yunnan were surveyed.
Results:
The caries incidence of 5-year-old children in Yunnan is 75.75%. The mean dmft is 4.44. The filling rate is only 6.57%.
Conclusion:
The deciduous tooth caries incidence of 5-year-old children is high in Yunnan. There are two factors to be considered: 1. The dental health care education to the parents and teachers should be enforced. 2. In order to get the earlier diagnosis and treatment, regular examination and prevention method should be conducted.
Related Concept Videos
Teeth
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
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.
Development of the Oral Microbiota
Oral Cavity
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...