Gear consists of two major parts, the crown and root. Dental crown covered with enamel. While the roots covered with a layer of cementum. Both of these layers meet at the cemento-enamel junction of lines on the neck of the teeth.
In the healthy adult teeth, this line is under or covered by gum attachment area. Thus, clinical or visible to the eye, dental crown is a tooth that is part of the area of attachment of the gums. While anatomically or indeed limit dental crown is passed under the area of attachment of the gums.
Length of tooth crown meets the eye varies, depending on the location of the attachment of the gum area. Excessive brushing can lead to lower area of attachment of the gums, making the teeth appear longer. Meanwhile, dental crown will look shorter or wear on the teeth excessive usage, such as the symptoms of bruxism or due to attrition.
Adult teeth consists of 32 teeth, 16 teeth on each jaw. There are two jaws are divided into four equal quadrants and each quadrant of eight teeth, two incisors (incisor), one canine (cuspid), two premolars teeth (premolars), and three molars teeth (molars) . Permanent tooth numbering system ranging from 1 to 32. Starting from the third molar on the right across maxilary maxilary up maxilary third molars on the left. Then, followed by the mandibular third molar teeth and surround left mandibular third molar to the mandibular right.
Digestive system, or gastroinstestin system, is a system of organs within multicellular animals that received food, digest it into energy and nutrients, as well as the rest of the process is issued. Between an animal digestive system to another can be very much different. Basically the digestive system in the human body is divided into 3 parts, namely the destruction of food that occurs in the mouth to the stomach. Next is the process of absorption of food juices that occurs in the intestines. Then the process of spending the leftovers through the anus.
Intestine is absorbed and circulated throughout the body, food needs to be digested first. Digestive process of food digestion of food can be divided into mechanical and chemical. Digestive system consists of the digestive tract and digestive glands. Digestive tract consists of the mouth, esophagus, stomach intestine, and anus. Food is absorbed in the intestine then circulate throughout the body. Remove food scraps through the anus.
Diagram of the digestive system consists of organs and digestive gland, digestive gland consists of several salivary glands, the parotid, submandibular (under the jaw) and Sublingualis (under the tongue). Pancreas, liver and gallbladder.
The digestive organs consist of:
- Oral cavity.
- Throat / pharynx.
- Tongue.
- Esophagus / esophagus.
- Stomach.
- Pancreatic duct.
- Duodenum (duodenum).
- Bile duct.
- Intestinal absorption (ileum).
- Thick intestine / colon.
- Flat colon (tranverse).
- Colonic up (ascending).
- Colon down (descending).
- Cecum.
- Appendix / appendix.
- Shaft colon / rectum and anus.
In the mouth there are teeth, tongue, and digestive glands mechanically and chemically. Human teeth consist of incisors, canines, and molars. Incisors located in the front shaped like an ax that has the function of cutting food. In addition to the incisors are the canines. Shaped pointy canines that are useful for tearing food. Behind the canine teeth are molars that have a smooth functioning of food.
Dental anatomy.
Each tooth is composed of the following parts:- Peak teeth or crowns, which is the one seen from the outside.
- Neck teeth, the teeth are protected section in the gums and is the boundary between the crown and root of the tooth.
- The roots of the teeth, ie the tooth that is embedded in the jaw.
Layers consisting of email teeth, bones teeth, dental cements, and dental cavities.
- Email: Email is a hard coating on the cusp. Email serve to protect the tooth bone. If the email is damaged, the tooth will be broken anyway.
- Dental Bone: made of dentin. Network in the form of yellowish dentin.
- Dental cements: in the outer layer of the tooth roots are dental cement or cementum.
- Dental Cavities: on the inside of the tooth pulp contained gigiatau cavity. Tooth cavity contains nerves and blood vessels. Holes in the teeth and the tooth cavity can reach the nerves causing pain.
The teeth
Human teeth start growing in babies aged approximately 6-7 months to 26 months. Teeth in children is called baby teeth or elder. After children from 6 to 14 years of the date the milk teeth one by one and replaced by permanent teeth. Tooth rows arranged in the upper and lower jaws.
Baby teeth are 20 pieces consisting of 8 pieces incisors, canines 4 pieces, 8 pieces and molars.
Permanent teeth in adults are 32 pieces consisting of 8 pieces incisors, canines 4 pieces and 8 pieces of front molars and molars behind 12 pieces. Thus you can find the difference between the amount of milk teeth and permanent teeth.
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