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The Anatomy Of Your Teeth In Pasadena

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Jaws and mouth or pharynx regions of vertebrates are packed with strong, tough structures known as teeth. Teeth provide various functions, including grabbing and chewing food, protecting the mouth from danger, and defending the body from harm. Ancestors of vertebrates had bone dermal (skin) plates as armor, which evolved into teeth in the form of modified successors.

The crown and one or more roots make up a tooth. The crown is the visible, functioning portion of the tooth above the gum line. In the jawbone, the root is the part that anchors and maintains the tooth. In the jaws, a fibrous band termed the periodontal ligament or membrane connects the root to the tooth-bearing bone, or alveolar processes. The gum tissue encircles the root's "neck." Varied teeth have different crown and root shapes, as do different animal species.

Teeth Structure
True teeth are made up of three layers and have the same basic structure. The tooth's crown is partially or completely covered with inorganic enamel, the body's toughest tissue. Dentine is the tooth's intermediate layer, and it's softer than enamel and has a more bone-like composition. Dentine is the major mass, or substance, of every tooth and spans nearly the whole height of the tooth, with enamel covering the crown part and cementum covering the roots. The pulp, which is located in the very center of the tooth, provides nutrition to the dentine. Pulp is composed of small blood vessels, cells, and nerves, all of which are housed in a chamber in the tooth's core. This long, thin canal has an expansion at the coronal end known as the pulp chamber. There are apical foramina (holes) at the ends of the roots that connect the pulp canal to a body's general nutritional and neurological systems. The tooth's root extends beyond the gum line and is covered by cementum. Dentine has a structure comparable to that of bone, although it is less dense. Cementum provides a thin coating for the root and acts as a medium for the adhesion of the fibers holding the teeth to the supporting tissue (periodontal membrane.) Fiber bundles in the gum connect it to the alveolar bone next to it and to the cementum on each tooth.


Shape and Function of a Tooth
We have two sets of teeth throughout our lifetimes, much like other animals. Primary teeth are also known as deciduous teeth, while the second set of teeth are referred to as permanent teeth. In all, humans have twenty primary teeth as well as thirty-two permanent teeth during adult life.

Primary teeth are smaller, have more sharp cusps, are whiter, and are more likely to be worn down than permanent teeth. They also have comparatively wide pulp and tiny, fragile roots. The first teeth emerge around six months following birth, and deciduous dentition is completed by the time a child is two and a half years old. Shedding starts around the age of five or six and is completed by the time a child is thirteen years old. The primary teeth are lost as the roots are resorbed when the permanent teeth develop and push into the mouth cavity.

Each jaw has eight teeth: four incisors, two canines, and four molars, which make up the primary dentition in humans. The premolars, also known as bicuspid teeth, take the place of the child's main molars in adulthood. A total of 32 teeth are present in the permanent dentition when the 12 adult molars of the permanent dentition have erupted (emerged from the gums.) Each jaw has four incisors, two canines, four premolars, and six molars that make up the permanent dentition.

The incisors are the front teeth and are specialized for plucking, piercing, cutting, and grasping. The biting edge of an incisor is chisel-shaped because it is broad and thin. By nibbling, we may learn about things in our mouth thanks to the tactile sensation of our top teeth. Canines, also known as cuspid teeth, are located next to the incisor teeth on each side of them. It often has a pointed form and, just like incisors, serves the purpose of chopping and shredding food.

Cusps on premolars and molars help break up food particles. Two premolar teeth are located behind each canine, and these teeth are capable of both chopping and grinding food. There are two cusps on each premolar (hence the name bicuspid.) The molars, on the other hand, are solely dedicated to grinding and crushing tasks. They're the last ones in the mouth, at the very rear. The cusps of a molar are usually four or five in number.


Tooth and Gum Diseases
Caries, often known as tooth decay, are the most prevalent disorder of the tooth among people. It's the most pervasive illness nowadays, even more so than the common cold. Tooth decay is caused by the accumulation of a yellowish coating on teeth called plaque, which harbors bacteria. Sugar and starchy food waste present on plaque are fermented by bacteria into acids that eat away at the tooth's enamel and dentine, eliminating calcium as well as other minerals. Caries often begin on the tooth's surface enamel, particularly in fissures and pits and in the space between neighboring teeth. The decay process begins in the enamel and extends to the dentine underneath it, eventually reaching the tooth pulp. In addition to brushing and flossing regularly, adding fluoride to drinking water may significantly decrease the risk of tooth decay. Deteriorated dental tissue is removed, and inert filling materials are applied as a treatment for dental caries (dental decay.)

It's possible that the tooth's alignment is off, for example, if the teeth in opposing jaws don't line up properly (malocclusion.) One or more teeth may be misaligned in a milder abnormality. Both kinds of issues are best dealt with early on using specific fixed or detachable devices (i.e., braces.)

Gingivitis, an infection of the gums, is another frequent dental problem. In most cases, it begins at the gum line or just below it, frequently in the space between two teeth. The space between the gum and the surrounding teeth often contains pockets, which may penetrate into the tissues. As a result, the infection spreads, and the infected gums swell and bleed. Inflammation and infection of the gums are both caused by plaque accumulation on the teeth, which irritates the gums.

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