Tooth Teeth

Tooth Teeth
Twilight's Robert Pattinson over-zealous with flossing teeth
Robert Pattinson reportedly chipped his tooth by flossing it so hard
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Primary teeth are the first teeth that appear in a baby. These teeth start appearing in your child at around six months of age and often, all primary teeth appear by the time your child is three years old.

Whenever ages are mentioned in this article, remember that these are guidelines only and if your child's teeth are not following this schedule that does not necessarily indicate a problem with their development. If you have any specific questions about their development always ask your dentist.

At six weeks in the womb, your baby's teeth are already starting to form. Hard substance in the region where the teeth will appear starts forming at around three to four months of gestation. The central incisors appear before all the others. These are the front middle teeth. The lateral incisors appear next on either side of these central incisors. Thereafter, the second molars appear.

Normally, four primary teeth appear every six months. Those in the lower jaw appear ahead of those in the upper jaw. Primary teeth appear in pairs, one on the left side and the other on the right side. Girl babies generally get their primary teeth ahead of baby boys.

Primary teeth are bright white in color and much smaller than the permanent teeth that appear later. There are only twenty primary teeth in all. Primary teeth form the foundation for the permanent teeth that appear in their place after they fall out.

Your child starts the growth and development of the facial and jawbones from the age of four. This could create some spaces in between primary teeth. Spaces help to accommodate the larger permanent teeth, as they appear later.

Although all primary teeth will eventually fall out paving way for permanent teeth, you still want to make sure that you care for these teeth. Healthy teeth are part of your child's overall physical health. Facial appearance is guided by the jaw bones and muscles, which are in turn guided by the presence of healthy properly positioned teeth. These muscles are essential in efficient mastication (chewing). Missing or irregular teeth can disrupt normal chewing of food and lead to food settling between teeth. This could cause tooth decay and gum problems.

Healthy primary teeth make way for healthy permanent teeth. Tooth infections and decay in primary teeth, although not directly related to problems in the underlying permanent teeth, is a sign of hygiene habits that need to be changed before the arrival of the permanent teeth.

There are 32 permanent teeth in all. These consist of six maxillary and six mandibular molars, four maxillary and four mandibular premolars, two maxillary and two mandibular canines, and four maxillary and four mandibular incisors.

Permanent teeth come in place of primary teeth except the permanent molars, which come in behind the primary molars. Normally, primary teeth start falling out from the age of six and continue until the age of twelve. Permanent teeth push the primary teeth from underneath. However, in between the ages of six and twelve your child will have both primary and perm- anent teeth. In most cases, all permanent teeth appear by the eighteenth year. In some cases, they may appear until the age of twenty-one.

The first primary teeth that start falling are the central incisors. The first molar could appear by the sixth year. Lateral incisors appear by the eighth year, premolars and second molars appear by the ninth and tenth years, while canines appear by the eleventh or twelfth year. The second molar comes in at 12 or 13, whild the third molar (wisdom tooth) arrives between the ages of 17 and 25.

As the permanent teeth displace the primary teeth in the jaws, the mouth experiences certain changes. These change the shape of your child's face into that of a growing adult. Permanent teeth grow to a certain size and thereafter, the root closes, and teeth stop growing.

Steven J. Brazis, DDS is a graduate of U.O.P. School of Dentistry. He has practiced family and cosmetic dentistry for 35 years. His practice is located in Sacramento, CA. Visit his web site: http://www.toothhaven.com or email him at sjbrazis@toothhaven.com

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