A study of shape optimization of an induction motor frame system considering noise and vibration

학위논문(석사) - 한국과학기술원 : 기계공학과, 1996.2, [ vi, 86 p. ]한국과학기술원 : 기계공학과

Development of a Biphasic Electrical Current Stimulator for Enhancing Early Bone formation in Dental Implant

In dental implant, early bone formation of surrounding implant surface has long been key technology to increase success rate. In this study, in order to enhance bone formation, we stimulated biphasic electrical current with 20μ A/cm2 through temporary healing abutment to a surrounding bone tissues. Developed small sized biphasic electrical current stimulator was integrated in temporary healing abutment with power source and the device was applied for 7 days in early stage of osseointegration in animal experiments.본 연구는 보건복지부 과제 (A040028(0405-E000- 0301-0007)와 과학기술 부/한국과학재단 우수연구센터 육성사업의 지원으 로 수행되었습니다(R11-2000-075-01001-0). 제 작된 chip은 IDEC MPW 프로그램과 (주) 삼성전 자의 지원에 의해 제작되었습니다

An Electronic System IC for Enhancing Bone Formation in Dental Implant

This paper presents an electronic device for enhancing osseointegration of surrounding tissues in dental implant. Early bone formation between implant surface and surrounding tissue is very important to shorten period of treatment as well as decrease failure rate of implant surgery. In order to accelerate bone formation, we designed a biphasic electrical current (BEC) stimulator IC, having parameters of 20uA/cm2, 120us-duration and 100 pulses per second. It was integrated with micro-batteries in temporary healing abutment and the system operated for 7 days with continuous BEC stimulation in animal tests. The results of animal tests show that the proposed electronic system expends the osseointegration of the implant surface by 1.69-fold more than that of the controls. Based on these results, we proposed new electronic system that could be applied to accelerate bone formation in dental implant. These technologies also can be used to the patient with osteoporosis.본 연구는 보건복지부 과제(A040028(0405-E000- 0301-0007)와 과학기술부/한국과학재단 우수연구센터 육성사업의 지원으로 수행되었습니다(R11-2000-075- 01001-0). 제작된 chip 은 IDEC MPW 프로그램과 (주) 삼성전자의 지원에 의해 제작되었습니다