The mother's diet should have adequate amounts of calcium, phosphorus, vitamin C, and vitamin D. Certain medicines such as tetracycline should not be taken during pregnancy. There are 4 main stages of tooth development:. The first stage begins in the unborn baby at about 6 weeks of pregnancy gestation. This is when the basic substance of the tooth forms. After the child is born, the next stage occurs when the tooth actually sticks out protrudes through the gum.
Soft tissue on the inside of the tooth that contains the nerve, blood supply, and the ability to produce dentin. Click to Enlarge. Every child is different. The biting section of an incisor is wide and thin, making a chisel-shaped cutting edge. The canines or cuspids, meaning a tooth with a single point are on either side of the incisors.
They are for holding and tearing food. Each premolar generally has two cusps, hence the name bicuspid. They are used for holding and crushing food. Molars are the flat teeth at the rear of the mouth. Each molar typically has four or five cusps. They are used exclusively for crushing and grinding. Wisdom teeth are also called third molars. They erupt from the age of 18 onwards but are often surgically removed. The number of roots for each type of tooth varies.
Typically incisors, canines and premolars will have one root whereas molars will have two or three. Our diagrams and images below will show you what the crown and roots of your Incisor, Canine Cuspid , Premolar Bicuspid and Molar teeth look like in each jaw:.
You have four incisor teeth 2x central and 2x lateral incisors in each jaw. They look like this:. You have six molars in each jaw. The crown of a tooth is the top part that is exposed and visible above the gum gingiva. It is covered with enamel, which protects the underlying dentine. The root of a tooth descends below the gum line, into the upper or lower jawbones, anchoring the tooth in the mouth.
Different types of teeth have a different number of roots and root formations. The neck is the dividing region of tooth at the gum line, where the crown meets the root. The crown of each tooth is covered with enamel, which protects the underlying dentine. Enamel is the hardest substance in the human body, even harder than bone. This is because it is the most mineralised substance in the body, made up of crystalline calcium phosphate Hydroxylapatite.
It is as hard as crystal. Enamel is the only tissue that has no living cells. The gingiva is the pink soft tissue that we call our gums. It protects the jaw alveolar bone and roots of the teeth, and covers the neck of each tooth. In general, the first eight teeth to fall out central and lateral incisors do so in fairly quick succession, usually within a 2 year period from ages This exodus is followed by an approximately 2 year dry spell with no tooth loss.
The remaining 12 teeth tend to fall out between ages The entire permanent tooth eruption process takes about 7 years, during most of which your child will have a mixture of both permanent teeth and baby teeth mixed dentition stage. When all the baby teeth are lost, the permanent dentition stage begins. Keep in mind that there is no definitive age that applies to permanent tooth eruption. However, if your child loses a tooth and its permanent replacement has not emerged within 3 months, contact your pediatric dentist for an evaluation.
All the permanent teeth typically erupt by age 13, except for the third molars, or wisdom teeth which emerge a few years later. The last permanent teeth to come in are the third molars, also called wisdom teeth. Most people do not get wisdom teeth until they are in their late teenage years or early twenties, with some people never having wisdom teeth erupt.
Impacted wisdom teeth do not erupt because they are blocked by the existing teeth. Infection, inflammation, and damage from overcrowding can occur if left unaddressed. Crowding of the permanent teeth occurs when the jaw does not have enough room to accommodate the incoming teeth.
Crowding can be caused by:. The manner in which the teeth erupt is influenced greatly by heredity. If overcrowded teeth run in the family, your child may also inherit crowding issues. Zarmin Lalani and her team at Discovery Kids Pediatric Dentistry Frisco, Texas, by completing an online appointment request or phone Zarmin Lalani is a board certified pediatric dentist in Frisco dedicated to helping her patients develop and maintain good oral health habits that last a lifetime.
Testimonials are very important to us at Discovery Kids Pediatric Dentistry We want to thank you, our valued patient, for taking the time to write a review for our team. Permanent teeth that need to last the rest of their lives. Eventually, those baby teeth are all replaced by permanent teeth — starting around age five and continuing through adulthood when wisdom teeth come in.
We are born with a set of 20 primary teeth, which are eventually replaced with 32 adult teeth. Those baby teeth have a big job — not only do they help our kiddos chew their food, they also hold space in the jaw for the larger permanent teeth to come in.
0コメント