New ceramic-coated dental implant presented
A novel dental implant is intended to combine the benefits of ceramic and titanium dental implants. The new ceramic-coated dental implant has now been presented at a press conference of the German Society of Oral and Maxillofacial Surgery.
Dental implants made of ceramic or titanium have already proven themselves well in everyday practice. However, complications may occur in both variants. Straight ceramic implants are partially at risk of fracture and in the titanium implants may, although only very rarely, come to intolerance reactions of the patient.
As communicated at the 67th Annual Congress of the German Society of Oral and Maxillofacial Surgery (DGMKG), a ceramic-sheathed dental implant was developed based on the latest scientific findings, which combines the biomechanical and biocompatible advantages of both previous implant variants.
Titanium dental implants may in rare cases lead to titanium contamination of the tissue. Clinical and experimental studies have shown that tissue enrichment of titanium ions can occur during insertion of the dental implants or during the subsequent loading phase. If the patient already suffers from inflammation of the implant bed, this may additionally favor the ion release of the titanium implants.
Even though such reactions are extremely rare, science and research were challenged to find a solution to this problem as well. The result was a high-end product: a ceramic-coated dental implant that combines the advantages of ceramic and titanium implants without its negative properties.
The researchers have coated special titanium dental implants with a 2-5 μm thin layer of zirconium oxide or niobium oxide. First results of the study have shown that the ceramic layer provides reliable protection against mechanical abrasion and corrosion. The wafer-thin ceramic coating is a so-called high-vacuum coating. This method is not new and has been used for several years in other medical fields, such as vascular surgery or spinal implantology.
In addition, the new method has astonishing biocompatibility: it leads to a direct connection between the ceramic and the gingival epithelial cells, an attachment that is comparable to the cells of the natural tooth. Thus, these dental implants are perfect for patients who show incompatibilities with titanium dental implants.
According to the researchers, basically all titanium implant systems could be encased with the new method. This would preserve the biomechanical superiority of titanium implants.
Finally, no tooth gaps anymore
Dental implants enable tight new teeth. Novel, minimally invasive techniques reduce pain and problems to a minimum. Bad oral hygiene or an accident: every year countless people lose their teeth. This is not only an aesthetic problem, but also has a significant function restriction. Instead of removable prostheses, which were still common until a few years ago, most patients today want tight new teeth.
This is possible with dental implants. "A dental implant is inserted through a small surgical procedure in the jawbone and grows there after about 6 weeks with the bone," explains the acting in Bolzano dentist Gernot Obermair. An implant is thus an artificial tooth root on which then artificial teeth in the form of crowns or bridges can be attached or serve to stabilize removable prostheses.
In the past, very time-consuming and time-consuming treatments were often necessary, but thanks to state-of-the-art technology, the entire treatment can be carried out within a short time.
Implants need the same care as natural teeth
"A dental implant must be cared for at least as well as your own teeth. This avoids inflammatory processes that can lead to the loss of the artificial tooth root." This recommendation of the German Society for Implantology e.V. (DGI) for implant patients derives from the new international classification of diseases of the periodontium, which has now been published. For the first time, inflammation of the tissues around dental implants was also classified. The basis for this was provided by an international team of experts headed by DGI President Prof. MD Frank Schwarz from the University Hospital Frankfurt.
To close tooth gaps, dentists in Germany use an estimated one million dental implants per year. For example, it can be avoided that healthy neighboring teeth have to be ground to anchor a bridge. Numerous studies have shown that the majority of patients are satisfied with this type of dental prosthesis and improve mouth-related quality of life after treatment.
However, as in the case of natural teeth, the tissue can also become inflamed around a dental implant. As Swedish researchers found in a major follow-up of just under 600 implant patients nine years after the treatment, in one third of the patients the mucosa around the implants was inflamed - dentists then speak of a mucositis. At 45 percent, this inflammation had already spread to the jaw bone - the bone tissue around the implant had been reduced by more than half a millimeter. Diagnosis: "peri-implantitis".
No more dental implants? Scientists let teeth regrow
Berlin scientists have grown teeth out of germs. New tests indicate that dental implants may soon be a thing of the past. Researchers at the Technical University of Berlin have succeeded in regrowing their teeth. The new methodology may one day make tooth implants redundant.
Most mammals form a deciduous dentition during their lifetime, which gradually falls off. The teeth that grow as a result represent the dentition that remains from then on. This is the same with humans. If this disappears, nothing grows anymore.
Extremely seldom does it happen that even a third "generation" of teeth grows up. But usually, if a tooth of the "permanent dentition" fails, an implant must therefore.
This could change soon: Researchers from the Technical University of Berlin wondered what other options exist. They diligently studied the development of the tooth and learned that when our permanent teeth form, various precursor cells accumulate in the jaw. And below the outer skin layer. They condense and, according to the press release, form a type of tooth germ. At some point, it develops into a tooth.
Dental implants need intensive care
The good news beforehand: people are getting older, but at the same time is decreasing the number of seniors who are without teeth in old age. Meanwhile, more and more retirees live with dental implants, which have been used for about three decades.
Dental implants are placed in the jawbone instead of lost teeth. They act like artificial tooth roots. Crowns, bridges or prostheses are placed on top. "The dental implants are a high-quality denture and their variety is very large," said Professor Dr. med. Dirk Ziebolz, senior physician at the University of Leipzig. The advantage is that they protect the still healthy teeth in the environment and maintain the normal chewing function.
Dental implants require a very good care. Common causes of oral hygiene problems in old age are progressive dementias such as Alzheimer's disease, chronic metabolic disorders such as diabetes mellitus, age-related loss of vision (eg, vision defects, cataracts, macular degeneration), rheumatic diseases related to wear, which restrict the fine motor skills of the hands and the mobility of the shoulder joints , Functional limitations of the immune defense system (eg in cancer) and not infrequently also drug side effects, among others can lead to dry mouth, increased bone loss and an increased risk of bleeding.
An important prerequisite for maintaining dental implants in the mouth for many decades is the removal of bacterial plaque. In case of deficiencies in oral hygiene, bacteria can penetrate under the gumline and along the implant into the jawbone. The result is inflammation that can endanger the tight fit of the implant and even lead to its loss. Smoking is also a risk that can lead to implant loss. However, dentists do not generally advise smokers of dental implants, but assess the situation individually.