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李相國 단국대학교 대학원 1988 學術論叢 Vol.12 No.-
In the modern organizational sociaty which dominated by management, the managerial objects have been divided aspects of the task and the human relationship. Considersting the fact that the task is achieved through person's activity, however, the success and the failure of organization may eventurally depend on effective human management. In this study, therefore, I am going to study leadership, that based on human management, is fallen into as follow: ⅰ) definition, ⅱ) function, ⅲ) theories, ⅳ) effective plan etc. Particularly, in concreate plan for leadership effectiveness, I suggested appropriate leadership style for situations by integrating leadership style and maturity level of group members, sources of power, motivation, ans so on. Then, in part of conclusion, I emphasized that the most important key point to display leadership consists in training himself of leader.
조해성,홍국선,이상화 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1
After the loss of natural teeth, alveolar ridge is rapidly recontoured during the first to 3rd years. As the result, ridge augmentation before implant placement and esthetic restoration has become a necessary procedure for the edentulous ridge. For the ridge augmentation, a membrane barrier technique with graft material underneath has been suggested. Membrane barriers have been used to mechanically protect and isolate the graft material. But it has been associated with infection upon exposure. incomplete healing, and the presence of a connective tissue layer between the membrane and the newly formed bone. However the block graft provided the mechanical support for the particulate bone graft which was Placed around the block bone without the need of any membrane barrier at horizontal ridge augmentation procedure. This study will review current articles of the ridge augmentation and will discuss the usefulness & prognosis of autogenous block graft for horizontal & vertical alveolar ridge augmentation with two case reports.
한근아,홍국선,이상화 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1
Autogenous tooth transplantation, or autotransplantation, is the surgical movement of a tooth from one location in the mouth to another in the same individual. Tooth transplantation offers one of the fastest and most economically feasible means of replacing a missing tooth. Despite the increasing use of osseointegrated implants in patients with missing teeth, their use is contraindicated in growing patients. Transplantation of available teeth remains a suitable choice for replacing missing units in young patients. Once thought to be experimental, autotransplantation has achieved high success rates and is an excellent option for tooth replacement. Successful transplantation depends on specific requirements of the Patients. the donor tooth. the recipient site, assessment of patients, and surgical procedure. The aim of this paper is to underline the evidence based principles for successful autotranbplantation and report clinical and radiographic results related with various conditions in three cases.