In this video you can see how a teeth grow in your jaw through the time. Very useful.
Autogenous bone block grafts, bone grafting material or a combination of both can be used to restore an implant site of adequate dimensions in an atrophied maxilla. If the vertical height of the bone is inadequate in the posterior region, a sinus floor lift is often indicated to stabilise the implants safely. In the case presented here, surgical treatment based on Prof. Fouad Khoury’s [1, 2] biological concept for bone grafting using a combination of autogenous bone block grafts and particulate bone chips is described. The case report also describes the layering technique as part of a sinus floor lift in conjunction with bone grafting material. The objective of the treatment is a restoration with longterm stability and a good aesthetic result. An im plant-supported bar-latch design based on Dr Friedrich-Wilhelm Pape’s prosthetic concept (Schellenstein concept) was used.[3] Initial situation The 60-year-old patient was referred to the practice with a telescopic restoration on natural abutment teeth 11, 21, 22 and 23. Crown and bridge restorations were used in the mandible; however, teeth 21 and 22 could not be preserved and were extracted. Abutment teeth 11 and 23 could not be preserved, but served as abutments for the temporary restoration until fabrication of the final prosthetic restoration. In the premolar region specifically, pronounced horizontal and vertical bone defects that required comprehensive augmentative measures were identified in the preoperative 3-D CBCT images (Figs. 1–4).
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BALTIMORE, USA: A recently published study has shown that infection with the oral human papillomavirus Type 16 (HPV 16), which is also thought to cause oropharyngeal cancer, is more common among people who have recently used or been exposed to tobacco. The researchers found that even modest tobacco use, like three cigarettes per day, is associated with higher oral HPV prevalence. The study included 6,887 participants, who were originally enrolled in the National Health and Nutrition Examination Survey, a program of studies designed to assess the health and nutritional status of adults and children in the U.S. Current tobacco users accounted for 28.6 percent (2,012) of the study population and 1 percent (63) were infected with HPV 16. Examination of blood and urine, as well as oral rinsing and gargling to collect mouth and throat cells, found that participants with higher levels of tobacco-related biomarkers in their blood and urine, which can come from any tobacco source—even secondhand smoke—were more likely to have oral HPV 16 DNA compared with those who had no detectable levels of the compounds, explained Dr. Carole Fakhry, an assistant professor of otolaryngology–head and neck surgery at the Johns Hopkins University School of Medicine, where the study was conducted. According to the study, oral HPV 16 prevalence was greater in current tobacco users (2.0 percent) than in former tobacco users or those who had never consumed tobacco (0.6 percent). In addition, a dose–response relation was found. The equivalent of three cigarettes per day increased the risk of HPV 16 by 31 percent, and the equivalent of four cigarettes per day increased the risk by 68 percent. HPV 16 is primarily transmitted through oral sex, and current tobacco users in the study were more likely to have a higher number of lifetime oral sexual partners compared with nonusers. Thus, although the study found an independent relationship between tobacco use and HPV 16 infection, it cannot be ruled out that participants who used more tobacco might also have had more oral sex and were therefore at higher risk of infection. The study, titled “Tobacco Use and Oral HPV-16 Infection,” was published in the Oct. 8 issue of the Journal of the American Medical Association.
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BIRMINGHAM, Ala., USA: New research from the U.S. provides evidence that Porphyromonas gingivalis, the main agent of the chronic inflammatory disease periodontitis, also manipulates the human immune system. In a number of laboratory tests, scientists observed that the pathogen inhibits the body’s defense processes that would normally destroy it. In order to determine the manner in which P. gingivalis influences the immune system, the researchers treated cells from mice with an inhibiting antibody against Interleukin-10 (IL-10), an anti-inflammatory protein, while leaving a different portion of the same cells untreated. Afterwards, they tested whether the cells produced interferon-gamma (IFN-γ), a protein that has an immunostimulatory and antiviral effect. According to the study, P. gingivalis stimulated the production of IL-10, which in turn inhibited the activity of T-cells and macrophages, and repressed the immune response. The researchers observed increased production of IFN-γ in the treated cells, while no such growth was seen in the untreated cells. The study highlighted the mechanism by which the pathogen establishes a chronic infection. “These bacteria go beyond merely evading our body’s defense and actually manipulate our immune system for their own survival,” the researchers said. The findings suggested that the damage done by the bacterium occurs when the immune cells of the host are first exposed to the pathogen. With regard to successful treatment, the results demonstrated the importance of a very early intervention. According to the Centers for Disease Control and Prevention, one out of every two American adults aged over 30 have periodontitis. As the disease is often difficult to treat, the researchers hope that the findings of the current study will promote the development of new treatments that could prevent or ameliorate the chronic infections caused by the pathogen. The study was carried out at the University of Alabama at Birmingham’s School of Dentistry and was published in the January issue of the Journal of Leukocyte Biology.
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COLUMBUS, Ohio, USA: Microbiologists have suggested that bacteria present in the oral cavity are a reliable indicator of a person’s ethnicity. In a study of participants from four different ethnic groups, they found that each group had an individual set of oral microbes. They believe that these microbes might also predispose individuals to certain oral diseases. The study included 192 healthy individuals aged 18 and over who consisted of non-Hispanic blacks, non-Hispanic whites, Chinese people and Latinos. Researchers at the Ohio State University compared the oral microbial communities they obtained from bacterial samples from the participants’ saliva, tooth surfaces and gums after sequencing their DNA. Using a special machine, they were able to predict an individual’s ethnicity with 62 percent accuracy based on a given bacterial community. African-Americans were correctly identified according to their microbial signature 100 percent of the time. Latinos were identified with 67 percent accuracy and Caucasians with 50 percent. The classifying machine performed best when subgingival microbes were used. This was attributed to the fact that these bacteria are the least likely to be disrupted by environmental changes in the mouth, such as food, toothpaste and tobacco. Overall, they found 398 species, with an average of about 150 species per person. Only 2 percent were present in all study participants in different concentrations according to their ethnicity. According to the scientists, the findings could help explain why some ethnic groups, and African-Americans in particular, are more susceptible to gum disease and provide further evidence of the necessity of personalized dental treatments. The study, titled “Deep Sequencing Identifies Ethnicity-Specific Bacterial Signatures in the Oral Microbiome,” was published online on Oct. 23 in the PLOS ONE journal.
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AUSTIN, Texas, USA: Studies on the human microbiome have shown that shifts in oral microbiota are associated with a number of diseases, including obesity, Crohn’s disease, diabetes and periodontitis. Now, U.S. scientists have found that oral bacteria act differently in diseased patients compared with healthy individuals. They believe that the findings could be used to develop methods to prevent or even reverse diseases such as periodontal disease. Although it is known that the composition of the microbiome changes during the transition from health to disease, it is still unclear how specific activities of different members of the microbial community affect diseases. In order to understand how different bacteria act in healthy and diseased individuals, researchers at the University of Texas at Austin examined periodontal plaque samples from ten patients from Izmir in Turkey with aggressive periodontitis. Using supercomputers, the researchers compared the expression of 160,000 genes in healthy and diseased periodontal communities and found that these communities show defined differences in metabolism. “In other words, a species of bacteria that ate one thing, such as fructose, can switch to a different kind of sugar to feed on if diseased,” explained Dr. Marvin Whiteley, professor of molecular biosciences at the university. A major question concerning the mechanism underlying the changes is whether changes in composition and behavior cause diseases or are a consequence of diseases. In this respect, the present study demonstrated that differential expression of metabolic genes was associated with the periodontal disease state. For instance, the expression of butyrate production genes by the bacterium Fusobacterium nucleatum increased during disease, suggesting that F. nucleatum butyrate production promotes periodontitis. However, further studies are needed to verify this hypothesis, the researchers said. Whiteley said that the research could help determine biomarkers that predict whether a patient is at risk of developing periodontitis. As bacterial populations can be manipulated, researchers might be able to shift them back to that of a healthy microbiome . The findings may thus also benefit periodontal treatment. According to the latest figures provided by the Centers for Disease Control and Prevention, about 47 percent of adults aged 30 and over in the U.S. have periodontitis. The organization estimates that over 8 percent of adults have severe periodontitis. The study, titled “Metatranscriptomics of the Human Oral Microbiome during Health and Disease,” was published in the April issue of mBio, an open-access journal published by the American Society for Microbiology.
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TOKYO, Japan: The results of a recently published study have shown that ozone nano-bubble water (NBW3) is very effective against two bacteria that cause periodontitis. The researchers believe that this new antimicrobial agent could be used in the development of new therapies for the inflammatory disease, which affects 15 to 20 per cent of middle-aged adults in its severest form worldwide. In in vitro experiments, researchers at Tokyo Medical and Dental University and the National Institute of Advanced Industrial Science and Technology in Japan tested the effectiveness of NBW3 against Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans. They found that the levels of both bacteria dropped to below the lower limit of detection after only 30 seconds of exposure. In addition, they observed that NBW3 had no significant impact on human oral tissue. Using an in vitro human oral tissue model, composed of human-derived epithelial cells, they found only minor decreases in the viability of cells after 24 hours of exposure. Such models are used to test the toxicity and irritation potential of new dental materials and oral care products. According to the researchers, they are more predictive of human responses and more clinically relevant than are animal and monolayer cell culture test systems. Conventional antibiotic therapies for treating periodontitis hold the risk of several side-effects, such as the development of bacterial resistance and adverse host reactions. However, NBW3 is produced from ozone, which has strong antimicrobial activity against bacteria, fungi and viruses, and thus does not induce antimicrobial resistance. Ozonated water usually retains its potency for only a short period, but NBW3, which the researchers produced using a patented technique, retains its oxidation ability for more than six months. This stability allows for the bottling and use of NBW3 as a disinfectant. Although the results of the present study are promising, these in vitro models cannot be directly translated into clinical situations, in which NBW3’s potency may be reduced by dental patients’ saliva. Therefore, further research is needed. The study, titled “Effects of ozone nano-bubble water on periodontopathic bacteria and oral cells – In vitro studies”, was published in the September issue of the Science and Technology of Advanced Materials journal.
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Dental implant surgical placement means placement of foreign bodies in the oral region, in order to provide better and more successful prosthetic rehabilitation. To date, the implants used extensively as a variety of materials with more or less success, since it is the body sooner or later rejected. How does dental implant looks like? Based on current knowledge, it can be said that metals such as stainless steel, chromium-cobalt-molybdenum alloys, precious metals and many polymers, bone tissue can be tolerated but not integrated. However, titanium, tantalum, niobium and others, like aluminum oxide ceramics, which are described as almost bioinert may be osteointegrated under certain conditions.
Our clinic Eurodent in Belgrade, Serbia, guarantee the safe and secure implant surgery, will provide you a more beautiful smile and allow you to save money, because of our affordable services at low cost implants.
You can see it on presented picture how does it looks like:
tooth/dental implant
Dental implant in jaw
adding crown to dental implant
– Shortened dental arch, bilaterally or unilaterally;
– Inserted crowns;
– Lack of a (usually) the front teeth.
Contraindications for implants can be:
Local – adverse hygiene index, a very pronounced atrophy of alveolar bone, periodontium insufficient, an unfavorable schedule and location of remaining teeth.
It should be noted that the marked atrophy relative contraindication, as perfected in recent years and developed a combined method of simultaneous osteoplastic bone loss and implantation of cylindrical implants enosal.
Before proceeding to the act of implantation is necessary to do some preliminary work:
– A detailed personal history and routine laboratory analysis;
– Radiograph;
– Clinical and radiographic assessment of the condition of existing teeth and jaw bones;
– Preparation of study models;
– Determining the possible advantages or disadvantages of prosthetic rehabilitation using implants.