COMPARATIVE CHARACTERISTIC OF ORTHODONTIC MINI-IMPLANTS AND ORTHODONTIC TITANIUM MINI-PLATES APPLICATION AS SKELETAL ANCHORAGE SYSTEM DURING ORTHODONTIC TREATMENT
The comparative characteristic of mini-implants and anchorage plates application in the modern orthodontic practice and their functioning success in different anatomical areas are represented in this article. 16 patients were installed mini-implants and mini-plates for this purpose. This group of patients was categorized by an oral hygiene level, a predisposition to a disintegration (smoking) and anatomic areas with different characteristics of the bone tissue. The direct connection between these factors and mini-implants and anchorage plates stability was fixed as a result. For example, the low hygiene level, the mucosal hypoxia, the thin and quaggy cortical plate in the vast majority caused mini-implants disintegration rather than anchorage plates due to its construction features (f.e different distance between working part of mini-implants and mini-plates). A mini-implant head is its working part which is placed close to mucous membrane of the mouth. In case of the unsatisfactory hygiene level this factor can cause such complications as an instability of mini-implants, but not the anchorage plates. Mini-plates are constructed in such a way that the part fixed at the bone is placed at enough distance from the working part. Mini-implants and mini-plates were installed in different anatomic areas which were selected based on cortical bone thickness and density. For example, the density of a sagittal palate scar area differs from the palate surface of a maxilla side part. During the research we made the conclusion that it is preferable to use anchorage plates in the areas with more thin bone tissue type.