Modern technologies for the restoration of dental emalia are usually to stimulate natural regeneration or to add artificial coating material in more severe cases, but these techniques are quite limited because they are not always sustainable in the long term, and sometimes they may even weaken the tooth. Biomaterials are the most known option, but scientists have recently found a way to improve the structure of hydroxyapatitis in order to create a new type of dental coating that simulates the structure of natural emalia but is stronger than it is. In the end, new material can prevent dental erosion or more effectively correct cracks and fractures.
The tooth enamel, the strongest tissue in the human body, plays an important role in protecting teeth from caries and toothstones. Despite its high strength, it can be destroyed during a person ' s life, for example due to malnutrition, poor oral hygiene, decalcination, accidents associated with washing, etc. Unlike most of the body ' s tissue, including the bone, it cannot recover. When it cracks, it loses its protective function, leaving it through.
However, since the enamel consists mainly of apatitis, artificial tooth compositions do not have the ability to physically and chemically connect to it. For these materials to be effectively coupled to healthy emals, acid poisoning techniques are used, sometimes not effective enough and may even further damage the enamel.
Significant advances have been made in restoration technologies for the natural regeneration of the enamel to eliminate the use of these composite materials. Examples include the use of special gels or toothpaste containing peptides or low-powered laser beams to stimulate the differentiation of stem cells in ameloblasts. Biomaterials such as hydroxiapathitis are also used to remineralize the emal in order to restore its mechanical properties.
Scientists in a new study published in the magazine may have found an even more effective way to do this by improving the specific resistance to hydroxyapathitis. As a major component of mineralized human and animal tissue, this material is widely used in various fields of medicine, such as orthopaedics and cosmetology. Produced in a laboratory using calculated materials such as egg shell, its structure can be easily formed. A new study, co-led by Al-Azhar University and the National Research Centre of Egypt, was aimed at finding the best structure to increase specific resistance to emalia.
In a new study, scientists created a biomemetic mineralized coating whose nanocrystals reproduce the properties of natural emalia apatitis, and they added a complex of amino acids to simulate a molecular structure similar to the surface of the tooth but with a higher hardness.
Amino acids such as lisin, arginin and hystide are important factors in the regeneration of bone and muscle tissue. Under the correct environmental conditions, hydroxyapathitis, "added" amino acids, can perfectly simulate natural enamel. ", explains Midedine.
A structural resemblance to natural enamel was confirmed by an analysis using field-based emissary and atomic-force microscopics, as well as chemical visualization of the surface through the Raman microspectroscopy, and a new coating was tested on healthy teeth to assess the increase in strength compared to other untreated healthy teeth.
Promising results show that the new material can be used to reduce dental sensitivity after washing or erosion. The next step in the study will be to assess its effectiveness for deeper restorations, including cracks and volume fractures.