- As useful for many, fills and dental implants can be harmful and while it has long been the only solutions for decomposition, it may soon be possible for the teeth to come back.
- A team of researchers understood the ideal hydrogel for the development of in vitro stem cells.
- In the future, whole teeth could be cultivated in this hydrogel and implanted, or teeth cells could start in the hydrogel and continue to grow in the mouth.
Sitting in the waiting room of a dentist is a fear that can only be overthrown by Novocaine. No one wants a drill in their mouths, after all. But what if you didn’t need a radical channel again and could only grow completely new teeth?
People do not have the advantage of regeneration of teeth such as elephants or sharks. Until now, we only had an opportunity to develop the replacement teeth, and that went through the age that most of us believed in the tooth fairy. After that, they are fills and crowns all the way down.
The problem with fillings is that they do not last forever and can weaken the structure of the teeth, which causes sensitivity and (possibly) further decomposition. Artificial dental implants may look like teeth, but they cannot restore teeth function and can lead to further complications. But eventually there may be a solution that can minimize your visits to this ominous chair.
While the cultivation of teeth in a laboratory has been attempted before, there was something missing. Now, a team of researchers led by Xuechechen Zhang from the Dentistry School in King’s College, London, has finally understood the ideal environment for teeth to develop in vitro on their own. When the previous experiments were developed, they had not yet reached an environment close enough to real gums, which led to signals to send at the same time and disturb the process.
Zhang’s team used hydrogels to develop a material or uterus, close enough body environment For cells to send signals between them in the correct order and allow the development of tooth organism.
“The development of teeth organoids involves the self-organization of cells in structures that mimic cell composition and functional characteristics of real teeth,” he said in a recently published study in the ACS Macro Letters. “When these structures are transplanted in vivo, they can then develop completely into mature teeth.”
Either pebble or tissue resident Stem cells can be used as tooth starters. Multipurpose stem cells can be renewed and be versatile enough to differentiate most tissues in the body. The stem cells found on tissue, on the other hand, are specifically for the ancestral cells that exist in all tissues and are used either for growth or replacement in the event of an injury. The cells used by Zhang came from mouse embryos, but had used human cells in previous experiments and plans to use them again in future research. The fetal stem cells from two groups of mice were combined to create cell pellets that were then cultivated to develop teeth.
Several different hydrogels have been tested and how successfully the teeth were developed by these stem cells depend on the properties of different hydrogels. Developing teeth with the largest structure and definition increased in a womb that had the lowest stiffness and the highest swelling and were the only ones who really grew up in organoids. These fully developed organoids had both epithelium (outer layer of enamel) and mesenal (teeth pulp).
“To regenerate teeth through mechanical tissues, epithelial and mesenchymal cells must interact within a [matrix] This facilitates these interactions, resulting in teeth organoids that can be fully developed into teeth in vivo, “Zhang and his team said in the study.
The growth of a whole new tooth – or the onset of the process, so that cells can continue when implanted – will require biomaterials such as this recently developed hydrogel. Human teeth could actually be cultivated in a laboratory someday and one day it may even be possible to insert stem cells into the gums and develop a whole new tooth in your mouth.
If you can avoid obtaining cavities for at least a few more years, you may ever hear the sound of this drill again.
Elizabeth Rayne is a creature who writes. Her work has appeared in popular engineering, Ars Technica, Syfy Wire, Space.com, Live Science, Den of Geek, forbidden future and collective fairy tales. She gets just outside New York with her parrot, Lestat. When not writing, a design can be found by playing piano or shift.
