| Artificial tooth planting is the most rapidly developing and the most exciting branch of dentistry research. Together with high speed turbo generator, panoramic X ray machine, and high molecular Nian2 Gu4 material, it has been ranked as the top 4 significant breakthroughs of the dentistry development in the 20th century. In comparison with other artificial tooth repairing methods, artificial tooth planting has several advantages such as no need of using Ka3 Huan2 Guan4 Tao4 and plastic Ji1 Tuo1, no damage to the neighboring teeth, as well as pleasant beauty. However, although at present there are lots of materials that can be applied in artificial tooth planting, these materials have respective limitations. Due to relatively high cost, complexity of operation, and heavy damage, many materials cannot be easily accepted by the patients, which imposes restrictions on the development of artificial tooth planting technology. Additionally, although currently the clinicalsuccess rate of artificial tooth planting is very high (the 5 year success rate has exceeded 90%), there are still some unsuccessful cases whose failures are caused by the characteristics of oral cavity planting body itself. In order to function in the double environment formed by jaw and soft tissue as well as oral cavity, besides the firm binding with the orthopedic tissue, the oral cavity planting body must also build the shield at the interface of planted soft tissue, which is able to prevent the bacteria and other inflammatory factors from invading. Therefore, in order to reduce the occurrences of infection, it is necessary to seek for a material which can be used as the oral cavity planting body in the clinical practice and possesses the features such as the high success rate of planting, simplicity of operation, light damage, relatively low cost, and easy acceptance from the patients. This will improve the popularity of artificial tooth planting technology.In view of above mentioned situation, we have done alarge number of exploring work and spent one and half years to intensively select cases used for clinical research on artificial carbon tooth root. Our research indicates that choosing carbon as the artificial tooth root material, together with the good seal provided by Chi3 Xiu4 Kou3, can prevent the bacteria and other inflammatory factors from invading. Moreover, this approach is easy to be accepted by the patients due to its low cost and light damage.For the research purpose, our experiment comparatively investigated two types of tooth roots which are made from carbon and molded in different external forms. One type of tooth root, which is used in the comparative group, is conventional root like (Gen1 Xing2) planting body. Another type, which is used in the experimental group, is single thread cylinder like planting body which is designed by ourselves and molded in the form of pointed head, thin neck, and thick body. In the clinical practice, our experiment selected 42 patients who are voluntary to receiving toothroot planting and have also relatively healthy Ya2 Cao2 bones. These patients were divided into the comparative group and the experimental group, who respectively received two types of carbon tooth planting in the jaw (He2 Gu3 ?). After following observations on the stability of planted tooth, self sensed symptom from the patients, and the development of their chew functions, we've got following results:For the experimental group adopting thread cylinder like artificial carbon tooth root planting, the stability rate of tooth reaches 70.9% after one and half years. All patients have no self sensed symptoms and their chew functions also remain normal. In contrast, for the comparative group adopting conventional root like artificial carbon tooth root planting, the stability rate of tooth is 9.1%, and the drop rate of tooth is 63.6%. (I think here Chinese version is perhaps wrong). All patients have self sensed symptoms and their chew functions are commonly reduced. These results indic... |
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