Yellow seal-proof coating smoker, darkening of teeth among fans of strong tea and coffee, and just the nature of the dark enamel - all these little things can particularly impressionable people "poison" life. Probably most of us are not just admired the beautiful white teeth that show Hollywood diva in front of television cameras. It happens so jealous that his teeth driving.
Yes, our teeth are not so white and smooth. For many years we are convinced that this is due to poor nutrition and improper lifestyle. But when our first tourists began to return from trips abroad with precious smiles of Hollywood, the old beliefs have been refuted. Case-it was not in the wrong lifestyle, and the possibilities of modern dentistry. It turns out that enamel defects can be easily corrected by using modern technology. We all know that domestic dentistry a few years ago was in poor condition, and its achievements benefited only a small group of privileged citizens - big bosses and the people close to the dentist. Today, all that was not available to ordinary consumers, it became very real.
Today, dentistry, perhaps, nothing is impossible. For example, to make teeth whiter (it's called - professional teeth whitening) can be a special "whitening" products that can penetrate the thick layer of enamel. In addition, you can make your teeth professionally cleaned by ultrasound followed by treatment with restorative materials.
Teeth whitening does not need any anesthetic or drilling, and from you only need a bit of patience to sit in a chair with his mouth open for some period of time. But the effect, as they say, is obvious.
In recent years, the market appeared toothpaste with whitening effect, but their effectiveness is not any comparison with the bleaching, which you will make in the dental office. Bleach, as a paste smeared on the teeth, it reacts with light, then it is washed off and imposed again. This allows us to achieve the desired effect and color uniformity. Toothpaste with whitening effect a clean yellow plaque, which is present on the solid outer layer of the tooth. A dentin, which determines the color of the teeth will remain the same - yellow. Incidentally, it is yellow, not only in heavy smokers, but also with age. Professional bleaching changes the color of dentin, and its nuances - from dazzling white to blue - you can choose for yourself.
Trust in professionals, dentists, and you for many years to be able to smile fearlessly, displaying the widest Hollywood smile, the same as that of popularnyh movie stars.
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From the moment of conception a baby, its growth and development occurs in the uterus. Throughout pregnancy until 33 - 35 weeks, the fetus may hold the most diverse position. At this period the child's weight is less than 500 grams, while the body length of about 25 cm.
Such dimensions allow the child to him to float freely in the amniotic fluid. As your child grows, it becomes a bit crowded, and sooner or later he takes a stable and final position in the uterus. With 35 weeks obstetrician determines what part of the body baby closest to the entrance of the pelvis were women.
The ratio of the longitudinal position of the body of the fetus to the longitudinal axis of the uterus is called the fetal position.
Distinguish between longitudinal position - longitudinal axis of the fetus and the uterus are the same.
Lateral position - longitudinal axis of the fetus crosses the uterus at a right angle.Oblique position - longitudinal axis of the fetus and the uterus form an acute angle.Transverse and oblique position occurs only 5% of cases and is considered a pathology. Most often, the longitudinal position of the fetus.
Presentation of the fetus - the ratio of the largest part of the body of the fetus to the entrance of women in a small basin. If the baby's head to the entrance of a small basin located closest to, we speak of cephalic presentation. It is very common.Occurs in 96% of women. On the breech say that if the pelvic end predlezhit to a small pelvis women.
Cephalic presentation can also be occipital, frontal, facial, perednelobnym. Emit the same type of flexion of the baby's head, usually in the occipital vertex presentation, fetal chin pinned to his chest.
Extensor type - head of the fetus is in the extensor position varying degrees. Occurs when perednegolovnom, frontal, personal presentation.
Dangerous than childbirth for extensor positions? Delivery may be prolonged, and in case of no match head size with the size of the pelvis mother, birth vaginally may be difficult and sometimes not possible.
Factors that contribute to the emergence of extensor fetal position:
- Polyhydramnios and dry years.
- Small fruit weight or prematurity, or, conversely, large fruit.
- Uncoordinated contraction of the uterus.
- A narrow pelvis.
- The abnormal development of the uterus and fetus.
When breech distinguish pure breech presentation - where the entrance can be made to the buttocks of the fetus. Foot praevia - turned legs of the fetus. If converted, and legs and buttocks, then talk about the rump-foot mixed presentation.
Reasons malposition:
- Abnormalities of the uterus (saddle, two-horned)
- A narrow pelvis, any pelvic tumors.
- Reduction of uterine tone or increased tone.
- Aborted fetus and the premature development.
- The abnormal fetal development.
- Multiple pregnancy.
- Placenta praevia, if it is fully or partially covers the outlet of the uterus.
Diagnosis of fetal presentation. Palpation. With its help determine the height of standing uterus, fetal position and presentation. Ultrasound diagnosis.
source: healthylifeandbeauty.com