BASIC APPROACH OF THE IMPLANT ORTHODONTICS FOR THE JUVENILE PATIENTS

由于市场上已有多种类型的种植体用于正畸支抗，临床医生必须注意种植体材料、种植体大小、种植体位置、预期载荷期限、预期载荷大小、牙周状况和患者年龄等因素。另一方面，在种植体支抗正畸领域，已有许多动物研究报道。在大多数研究中，钛种植体与周围骨之间的骨结合被证明是骨骼支抗所必需的。然而，有时在种植体取出时，当种植体部位的骨非常紧密或种植体长时间固位时，我们会感到不方便进行紧密的骨结合。相反，骨结合不足往往会导致种植体松动或失败。根据我的Beagle研究，钛种植体与周围骨之间的骨结合可能会因种植体大小、种植部位、种植时间甚至狗的年龄而改变。许多临床医生了解到，一般来说，上颌骨的骨结合比下颌骨的要少。大种植体的骨结合大于小种植体。然而，大多数临床医生并不一定关注种植后的加载时机。本研究清楚地展示了不同类型、大小和位置的钛微型螺钉的骨整合，以及微型螺钉在青少年、成年和老年Beagle犬身上的骨整合时间进程研究。

Since many types of implants have been commercially available for orthodontic anchorage, each clinician have to pay attention to the following factors such as implant materials, implant size, implant site, expected loading term, magnitude of expected orthodontic load, periodontal conditions and age of the patient.On the other hand, many animal studies have been reported in the areas of implant-anchored orthodontics. The osseointegration between titanium implant and the surrounding bone are demonstrated to be essential for skeletal anchorage in most studies. However, we sometimes feel inconvenient for tight osseointegration at the time of implant removal, when bone of the implant site are very compact or the prolonged retention of the implant has occurred. On the contrary, insufficient osseointegration often cause loosening or failure of the implant.According to my Beagle studies, the osseointegration between titanium implant and surrounding bone could be changed due to implant size, implant site, duration of the implantation, and even age of the dog. Many clinicians understand that the osseointegration in the maxilla is less than those in the mandible in general. The osseointegration with large implant is greater than those with small implant. However, most clinicians do not necessarily pay attention to the loading timing after implantation.This study clearly demonstrated the osseointegration with different type, size and site of the titanium mini-screw and time-course study of mini-screw for osseointegration using adolescent, adult and aged Beagle dogs.