A study confirmed that the mercury in dental fillings do not alter brain development of children, as some believe.
The silver amalgam has been used for a century to fill cavities. These fillings consist of a combination of metals, including mercury. Some studies showed that release small doses of mercury vapor.
Mercury poisoning damages the central nervous system and kidneys, and some specialists are concerned that exposure to low levels of this metal in amalgam affect children's health.
A team of researchers from Portugal and the United States-controlled to 507 children between 8 and 12 years who had amalgam fillings or resin. For seven years, there were no differences between groups in the incidence of neurological symptoms such as tremors, impaired vision or hearing, and disturbances in coordination.

The results are joining the evidence of two other recent works, including one conducted on the same group of children found no evidence that amalgam damage to the intellectual development or behavioral.
A panel of experts noted that although there is evidence that these fillings are safe, more studies are needed on some questions that have no answer, like how much amalgam in pregnant women might affect fetal development.
Some consumer groups, dentists and lawmakers believe it is necessary to prohibit the use of amalgam. The American Dental Association (ADA) maintains that scientific evidence indicates that the fillings are safe and which should be kept as an option for patients.

Your dentist can help to establish a prevention to lessen the inconvenience:

- It is important that patients undergoing chemotherapy treatment are reviewed prior endo-mouth.
- It is desirable to hand in the mouth and remove any dental cause and  irritative periodontal, any outbreak of infection to avoid infectious complications.
- A check on gingival health, with prevention of gingivitis can limit side effects.
- It is important that patients undergoing chemotherapy treatment is a perfect dental and oral hygiene.
- It takes a perfect dental plaque, gingival under irrigation and other uses of fluoride.
- A brushing of the tongue especially when drought helps eliminate bacteria and debris.
- It is essential to drink at least one and a half liters per day to properly hydrate.

We should not hesitate to visit our dentist:

- He taught a technique of brushing appropriate, with a soft toothbrush for not traumatize the skin.
- It prescribe mouth rinses to fight against drought mouth.
- It will advocate perhaps an injection of fluoride to control caries lesions.
- It will follow a good oral dental cavity that is the gateway to the infections. 
 

Until now, chemotherapy, cancer treatment with chemicals, is the only way to destroy tumor cells. This treatment inevitably causes side effects.
The toxicity of chemotherapy is related to its non-selective. It attacks cells in the process of multiplication, it affects not only cancer cells but also non-cancerous cells.

There is an oral toxicity associated with chemotherapy treatment. Clinical aspects are varied, with a frequency and intensity more or less, depending on the protocols used, duration of treatment, the possible association with radiotherapy, and the rule of the oral cavity before treatment.
It is linked to the action of drugs on the mouth, to inhibition of cell growth and lower immune defenses.

These disorders are transient and reversible in most cases.
 

A few days after starting treatment, we can see:

- An inflammation of the lining (mucositis):
- It can cause tingling and burning
- The mucositis can be infectious viral, bacterial or fungal.
- A dry mouth:
 

It is most often transient, linked to a malfunctioning salivary glands. Salivary secretions are reduced or nonexistent. Given that there already when treating a slowdown cellular dry mouth mucous membranes makes more fragile, and you can have ulcers, gingival lesions of oral candidiasis and Angulus at labial commissures.
The absence of saliva, is responsible for the proliferation of oral bacteria become pathogens. There is a breach of the oral ecosystem, anaerobic bacteria are redundant.
A bad breath can be installed.
The decrease in pH saliva can cause cavities.
A-sensitivity of the teeth and gums

According to studies on sports medicine and dental, almost all vigorous physical activity, not only contact sports, can cause accidents in teeth, lips, the cheeks, tongue and jaw. A fall, collision or contact slightly rude can damage one or more teeth. The loss of tooth represents a considerable amount of money loss. No restoration or prosthesis is as comfortable and durable than the natural teeth. In addition, dental treatment may in the long term, constitute a significant financial investment since complications can still occur several years after trauma.
 
 According to the Ministry of Health and Social Services, 20% with trauma injuries occur in places of entertainment or sport. These accidents can occur during sports or organized sports activities in the streets and in the schoolyard. The statistics are disturbing: there are more than 200 000 serious accidents affecting the mouth and teeth each year Quebec. Certains sports are more at risk than others, including boxing, wrestling, hockey, football, water polo, basket ball and weightlifting. Those who practice these sports should always wear a mouthguard. This device does not protect any event, but it significantly reduces the risk and severity of shocks on the mouth and teeth and soft tissue injuries to the mouth. There is also evidence that serves as a buffer against more serious injuries such as concussion or fracture of the jaw.
 
 Mouth guards on the market can be divided into two groups: those that are prefabricated, more or less adjustable and custom-made pieces by a dentist. In addition, a mouthguard is always very stable in the mouth and it does not interfere with breathing or speech impairments. The dentist may recommend one of the following three types, the mouthguard that best suits your needs, as the sport you practice.

Crown: upper and visible from the tooth.
 
 Email: white, hard and shiny covering the tooth. Enamel protects the dentin at the height of the dental crown.
 
 Dentin: tissue beneath the hard enamel that forms the bulk of the tooth and surrounding pulp cavity. The dentin has a yellowish color. It is the cause of the yellowish color of teeth, especially when the enamel layer is thin.
 
 Gingival sulcus: meeting point between the tooth and gum. This is where they accumulate plaque and tartar.
 
 Dental pulp: soft tissue in the heart of the tooth which contains many nerves and blood vessels. There is pain when cavities reached the dental pulp.
 
 Racine: Root portion of the tooth included in the tooth socket. The roots are covered by cement, and then by ligaments alveolodentaires. They represent about two thirds the height of the tooth and ensure its continuation. The cement is more porous than enamel which is the cause of dental hypersensitivity in gums. 
 

The College of Dentists of Quebec supports the use of fluoride to prevent tooth decay. He believes that one of the measures the most successful in the history of dental health care.

About dental fluorosis

A child may present a dental fluorosis if he has absorbed too much fluoride during tooth development. That is why we must encourage them to use a small amount of toothpaste containing fluoride and the spit after brushing teeth.

Serious cases of dental fluorosis alter the appearance of teeth. They have a discoloration or small brown streaks. The enamel may be rough, porous and difficult to clean. In cases of mild fluorosis, small white spots or lines often go unnoticed. You can not remove the fluoride is incorporated into the enamel of teeth. it is possible to improve the appearance of the teeth through treatments cosmetic dentistry. 
 

Essential oil bath
 
 The baths with essential oils are against indicated in infants and small children.
 
 Their skin is very thin can be easily crossed by oil and spread rapidly in the blood, which can cause serious poisoning.
 
 For pregnant women, the baths are to be avoided, since many oils are too tonic for the uterus and can cause of repeated abortion or premature birth.
 
 This last remark is also valid for products such as bath foam, bath salts or softening in oil bath.
 
 First major principle:
 
 Never add essential oils directly into the bath. We run the risk of skin reactions and burns the eyes and mucous membranes.
 
 The oils can not be diluted in water. It must first dilute the oils in a liquid that is mixed to make the bath water. The most current, more natural, less expensive and does not affect the qualities of essential oils is the whole milk.

A cavity is a lesion due to the alteration of the enamel and the dentin of a tooth leading to the formation of a hole.

Formation of a cavity
A cavity occurs when carbohydrates (sugars and starch) found in breads, cereals, milk, soft drinks, fruits, cakes, and candies stay on the teeth. The bacteria that live in the mouth digest these foods and transform them into acids. The bacteria, acids, food debris, and the saliva combine together to create dental plaque, which softens the enamel and the dentin of the tooth, creating a cavity.
 

Three factors play a role in the formation of a cavity: heredity, hygiene, and food. Although, it is definitely food that plays the most important role.
A cavity can occur in areas where good hygiene is difficult to maintain, such as in the grooves of the teeth, the area between two adjacent teeth, around the gum line, or around the edges of an old filling.
The cavity formed by the decay grows with time and can end up reaching the pulp. If at this stage there are no treatments done by the dentist, the decay destroys the tooth and may become an infection of the underlying bone, causing an abscess.

Symptoms vary according to the progress of the cavity, and the speed of this progress.
At the beginning, meaning when the cavity has only affected the enamel, the pain is minimal and in some cases, absent.
As soon as the decay starts getting close to the pulp, where the nerve is located, increasing therefore the size of the cavity, the teeth become sensitive to cold and hot. The pain becomes increasingly intolerable as the decay gets deeper in the tooth.
X-rays allow diagnosing a cavity in its early stages.

The key to preventing tooth sensitivity is to keep your gums healthy by reducing the pressure you use while brushing, use a soft toothbrush and to maintain good oral health habits. This means brushing all your teeth for 2-3 minutes, not the usually 30- 45 seconds that most people brush. Flossing is crucial in order to reach the 35% of the tooth surfaces where brushing can not reach.
 

Prevent tooth sensitivity by
Maintaining a good oral hygiene by using a proper brushing technique and flossing.
Using a toothbrush with soft or ultra-soft bristles.
Reducing the consumption of acidic foods.
Avoiding grinding the teeth, by wearing a bite splint when needed.
Going to the dentist for regular dental exams.
 

Treatments
Non-acidic mouthwashes containing fluoride.
Fillings to cover worn away enamel or the receded root.
More severe symptoms or a persistent sensitivity can necessitate other treatments. 
 

It is becoming more and more important in our care. It should begin in early childhood.
 
 For many years, pediatricians prescribe fluoride. Fluoride taken orally will strengthen the tooth enamel in training.
 
 The role of fluorine is unanimously acknowledged in preventing tooth decay. He has a share before the eruption dental and it also plays a protective role when the teeth are already on the arcade. Fluoride reduces the solubility of enamel in acid medium.
 Fluorine is found in some mineral water in the tap water in some areas in table salt, including enriched fluoride in toothpaste and mouthwash fluorinated.
 The topical fluoride (toothpaste, mouthwash, applications of fluoride in cabinet) promotes remineralization.
 
 A healthy diet is also important.
 A diet rich in carbohydrates is a major cause of developing cavities and the sticky confection.
 Therefore, we must avoid giving children snacks too sweet or sticky. A good balanced diet also contributes to an improvement of breath.
 
 The oral hygiene plays a vital role in preventing tooth decay.
 We must teach children to brush their teeth.
 
 Brushing teeth is a key means of prevention.
 An effective brushing should last three minutes. To view the past, simply use an hourglass, the three minutes have passed when the upper part of the hourglass is empty.