The teeth cut and grind food into little chunks, which allows a person to swallow and digest it easily. While teeth help people talk, their primary function is to chew. This causes part of the pulp to die and can cause a root canal infection. However, if this does not happen, the dental pulp may remain inflamed. This may cause the body to reject and fight off the bacterial infection. The dental pulp attacks the bacteria with antibacterial, immune, and inflammatory responses. Inflammation of the pulp can cause pulpitis, which can be very painful. If any bacteria get past the enamel and dentin, the pulp becomes inflamed in an attempt to protect the tooth. The center of the tooth contains dental pulp, which consists of loose tissues, including nerves, blood vessels, and connective tissues.
CMSC covers roughly 66% of molar roots.Ĭementum’s primary function is to support and fix the teeth in the jawbones. Other types of cementum, such as cellular mixed stratified cementum (CMSC), cover other parts of the roots. According to a 2016 article in the journal, Japanese Dental Science Review, acellular fiber cementum covers between 60–90% of single-root teeth and 33–50% of multi-root teeth. CementumĬementum is a tissue that covers the root’s surfaces. Unlike bones, dentin does not have blood vessels. The cells that form dentin are odontoblast cells, similar to osteoblast cells in bone.
Dentinĭentin forms the main part of dental tissues.ĭentin is a similar structure to bone. These different shapes stop the movement of small molecules in the enamel, helping to protect the crown of the teeth. Maturation stageĭuring the maturation stage, enamel crystals grow, which makes the enamel hard and durable.Īmeloblasts also change their appearance, turning into either ruffle-ended or smooth-ended cells. Researchers believe this may be because they begin to contain too much calcium.Īs a result, the ameloblasts produce fewer enamel proteins. Transitional stageĭuring this stage, around 25% of ameloblast cells die. These proteins and crystals will eventually turn into enamel. Initially, these cells make enamel proteins and crystals. EnamelĮnamel covers the crown or the outside of the tooth and protects it from physical and chemical injuries.Īccording to a 2020 article on tooth development in American Physiological Reviews, enamel develops in three stages: Secretory stageĪmeloblasts, which are a type of cell that only occur in the teeth, make enamel. Teeth also consist of layers called enamel, dentin, cementum, and dental pulp. The root anchors the tooth into the jawbone. The crown is the visible white part, and the root is the invisible part of the tooth hidden by the gums. Teeth start to develop before birth, and children tend to have all their baby teeth by the age of 3. A primary study in Odontology confirms that teeth are made of calcium.
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